1 | #!/usr/bin/perl |
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2 | # ------------------------------------------------------------------------------ |
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3 | # NAME |
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4 | # fcm_internal |
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5 | # |
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6 | # SYNOPSIS |
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7 | # fcm_internal SUBCOMMAND ARGS |
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8 | # |
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9 | # DESCRIPTION |
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10 | # The fcm_internal command is a frontend for some of the internal commands of |
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11 | # the FCM build system. The subcommand can be "compile", "load" or "archive" |
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12 | # for invoking the compiler, loader and library archiver respectively. If |
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13 | # "compile" or "load" is specified, it can be suffixed with ":TYPE" to |
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14 | # specify the nature of the source file. If TYPE is not specified, it is set |
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15 | # to C if the file extension begins with ".c". For all other file types, it |
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16 | # is set to F (for Fortran source). For compile and load, the other arguments |
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17 | # are 1) the name of the container package of the source file, 2) the path to |
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18 | # the source file and 3) the target name after compiling or loading the |
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19 | # source file. For compile, the 4th argument is a flag to indicate whether |
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20 | # pre-processing is required for compiling the source file. For load, the |
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21 | # 4th and the rest of the arguments is a list of object files that cannot be |
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22 | # archived into the temporary load library and must be linked into the target |
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23 | # through the linker command. (E.g. Fortran BLOCKDATA program units must be |
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24 | # linked this way.) If archive is specified, the first argument should be the |
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25 | # name of the library archive target and the rest should be the object files |
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26 | # to be included in the archive. This command is invoked via the build system |
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27 | # and should never be called directly by the user. |
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28 | # |
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29 | # COPYRIGHT |
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30 | # (C) Crown copyright Met Office. All rights reserved. |
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31 | # For further details please refer to the file COPYRIGHT.txt |
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32 | # which you should have received as part of this distribution. |
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33 | # ------------------------------------------------------------------------------ |
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34 | |
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35 | # Standard pragmas: |
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36 | use warnings; |
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37 | use strict; |
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38 | |
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39 | # FCM component modules |
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40 | use Fcm::Timer; |
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41 | |
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42 | # Function declarations |
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43 | sub catfile; |
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44 | sub basename; |
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45 | sub dirname; |
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46 | |
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47 | # ------------------------------------------------------------------------------ |
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48 | |
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49 | # Module level variables |
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50 | my %unusual_tool_name = (); |
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51 | |
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52 | # ------------------------------------------------------------------------------ |
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53 | |
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54 | MAIN: { |
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55 | # Name of program |
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56 | my $this = basename $0; |
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57 | |
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58 | # Arguments |
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59 | my $subcommand = shift @ARGV; |
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60 | my ($function, $type) = split /:/, $subcommand; |
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61 | |
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62 | my ($srcpackage, $src, $target, $requirepp, @objects, @blockdata); |
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63 | |
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64 | if ($function eq 'archive') { |
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65 | ($target, @objects) = @ARGV; |
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66 | |
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67 | } elsif ($function eq 'load') { |
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68 | ($srcpackage, $src, $target, @blockdata) = @ARGV; |
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69 | |
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70 | } else { |
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71 | ($srcpackage, $src, $target, $requirepp) = @ARGV; |
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72 | } |
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73 | |
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74 | # Set up hash reference for all the required information |
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75 | my %info = ( |
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76 | SRCPACKAGE => $srcpackage, |
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77 | SRC => $src, |
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78 | TYPE => $type, |
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79 | TARGET => $target, |
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80 | REQUIREPP => $requirepp, |
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81 | OBJECTS => \@objects, |
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82 | BLOCKDATA => \@blockdata, |
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83 | ); |
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84 | |
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85 | # Get list of unusual tools |
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86 | my $i = 0; |
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87 | while (my $label = &get_env ('FCM_UNUSUAL_TOOL_LABEL' . $i)) { |
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88 | my $value = &get_env ('FCM_UNUSUAL_TOOL_VALUE' . $i); |
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89 | $unusual_tool_name{$label} = $value; |
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90 | $i++; |
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91 | } |
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92 | |
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93 | # Invoke the action |
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94 | my $rc = 0; |
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95 | if ($function eq 'compile') { |
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96 | $rc = &compile (\%info); |
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97 | |
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98 | } elsif ($function eq 'load') { |
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99 | $rc = &load (\%info); |
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100 | |
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101 | } elsif ($function eq 'archive') { |
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102 | $rc = &archive (\%info); |
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103 | |
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104 | } else { |
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105 | print STDERR $this, ': incorrect usage, abort'; |
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106 | $rc = 1; |
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107 | } |
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108 | |
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109 | # Throw error if action failed |
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110 | if ($rc) { |
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111 | print STDERR $this, ' ', $function, ' failed (', $rc, ')', "\n"; |
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112 | exit 1; |
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113 | |
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114 | } else { |
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115 | exit; |
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116 | } |
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117 | } |
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118 | |
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119 | # ------------------------------------------------------------------------------ |
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120 | # SYNOPSIS |
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121 | # $rc = &compile (\%info); |
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122 | # |
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123 | # DESCRIPTION |
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124 | # This method invokes the correct compiler with the correct options to |
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125 | # compile the source file into the required target. The argument $info is a |
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126 | # hash reference set up in MAIN. The following environment variables are |
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127 | # used, where * is the source file type (F for Fortran, and C for C/C++): |
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128 | # |
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129 | # *C - compiler command |
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130 | # *C_OUTPUT - *C option to specify the name of the output file |
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131 | # *C_DEFINE - *C option to declare a pre-processor def |
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132 | # *C_INCLUDE - *C option to declare an include directory |
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133 | # *C_COMPILE - *C option to ask the compiler to perform compile only |
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134 | # *CFLAGS - *C user options |
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135 | # *PPKEYS - list of pre-processor defs (may have sub-package suffix) |
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136 | # FCM_VERBOSE - verbose level |
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137 | # FCM_OBJDIR - destination directory of object file |
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138 | # FCM_TMPDIR - temporary destination directory of object file |
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139 | # ------------------------------------------------------------------------------ |
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140 | |
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141 | sub compile { |
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142 | my $info = shift; |
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143 | |
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144 | # Verbose mode |
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145 | my $verbose = &get_env ('FCM_VERBOSE'); |
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146 | $verbose = 1 unless defined ($verbose); |
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147 | |
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148 | my @command = (); |
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149 | |
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150 | # Guess file type for backward compatibility |
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151 | my $type = $info->{TYPE} ? $info->{TYPE} : &guess_file_type ($info->{SRC}); |
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152 | |
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153 | # Compiler |
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154 | push @command, &get_env ($type . 'C', 1); |
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155 | |
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156 | # Compile output target (typical -o option) |
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157 | push @command, &get_env ($type . 'C_OUTPUT', 1), $info->{TARGET}; |
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158 | |
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159 | # Pre-processor definition macros |
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160 | if ($info->{REQUIREPP}) { |
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161 | my @ppkeys = split /\s+/, &select_flags ($info, $type . 'PPKEYS'); |
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162 | my $defopt = &get_env ($type . 'C_DEFINE', 1); |
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163 | |
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164 | push @command, (map {$defopt . $_} @ppkeys); |
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165 | } |
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166 | |
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167 | # Include search path |
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168 | my $incopt = &get_env ($type . 'C_INCLUDE', 1); |
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169 | my @incpath = split /:/, &get_env ('FCM_INCPATH'); |
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170 | push @command, (map {$incopt . $_} @incpath); |
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171 | |
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172 | # Other compiler flags |
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173 | my $flags = &select_flags ($info, $type . 'FLAGS'); |
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174 | push @command, $flags if $flags; |
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175 | |
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176 | my $compile_only = &get_env ($type . 'C_COMPILE'); |
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177 | if ($flags !~ /(?:^|\s)$compile_only\b/) { |
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178 | push @command, &get_env ($type . 'C_COMPILE'); |
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179 | } |
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180 | |
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181 | # Name of source file |
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182 | push @command, $info->{SRC}; |
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183 | |
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184 | # Execute command |
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185 | my $objdir = &get_env ('FCM_OBJDIR', 1); |
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186 | my $tmpdir = &get_env ('FCM_TMPDIR', 1); |
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187 | chdir $tmpdir; |
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188 | |
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189 | my $command = join ' ', @command; |
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190 | if ($verbose > 1) { |
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191 | print 'cd ', $tmpdir, "\n"; |
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192 | print ×tamp_command ($command, 'Start'); |
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193 | |
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194 | } elsif ($verbose) { |
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195 | print $command, "\n"; |
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196 | } |
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197 | |
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198 | my $rc = system $command; |
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199 | |
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200 | print ×tamp_command ($command, 'End ') if $verbose > 1; |
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201 | |
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202 | # Move temporary output to correct location on success |
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203 | # Otherwise, remove temporary output |
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204 | if ($rc) { # error |
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205 | unlink $info->{TARGET}; |
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206 | |
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207 | } else { # success |
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208 | print 'mv ', $info->{TARGET}, ' ', $objdir, "\n" if $verbose > 1; |
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209 | rename $info->{TARGET}, &catfile ($objdir, $info->{TARGET}); |
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210 | } |
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211 | |
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212 | # Move any Fortran module definition files to the INC directory |
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213 | my @modfiles = <*.mod *.MOD>; |
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214 | for my $file (@modfiles) { |
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215 | rename $file, &catfile ($incpath[0], $file); |
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216 | } |
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217 | |
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218 | return $rc; |
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219 | } |
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220 | |
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221 | # ------------------------------------------------------------------------------ |
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222 | # SYNOPSIS |
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223 | # $rc = &load (\%info); |
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224 | # |
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225 | # DESCRIPTION |
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226 | # This method invokes the correct loader with the correct options to link |
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227 | # the main program object into an executable. The argument $info is a hash |
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228 | # reference set up in MAIN. The following environment variables are used: |
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229 | # |
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230 | # LD - * linker command |
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231 | # LD_OUTPUT - LD option to specify the name of the output file |
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232 | # LD_LIBSEARCH - LD option to declare a directory in the library search path |
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233 | # LD_LIBLINK - LD option to declare an object library |
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234 | # LDFLAGS - LD user options |
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235 | # FCM_VERBOSE - verbose level |
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236 | # FCM_LIBDIR - destination directory of object libraries |
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237 | # FCM_OBJDIR - destination directory of object files |
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238 | # FCM_BINDIR - destination directory of executable file |
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239 | # FCM_TMPDIR - temporary destination directory of executable file |
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240 | # |
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241 | # * If LD is not set, it will attempt to guess the file type and use the |
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242 | # compiler as the linker. |
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243 | # ------------------------------------------------------------------------------ |
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244 | |
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245 | sub load { |
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246 | my $info = shift; |
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247 | |
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248 | my $rc = 0; |
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249 | |
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250 | # Verbose mode |
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251 | my $verbose = &get_env ('FCM_VERBOSE'); |
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252 | $verbose = 1 unless defined ($verbose); |
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253 | |
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254 | # Create temporary object library |
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255 | (my $name = $info->{TARGET}) =~ s/\.\S+$//; |
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256 | my $libname = '__fcm__' . $name; |
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257 | my $lib = 'lib' . $libname . '.a'; |
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258 | my $libfile = catfile (&get_env ('FCM_LIBDIR', 1), $lib); |
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259 | $rc = &archive ({TARGET => $lib}); |
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260 | |
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261 | unless ($rc) { |
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262 | my @command = (); |
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263 | |
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264 | # Linker |
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265 | my $ld = &select_flags ($info, 'LD'); |
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266 | if (not $ld) { |
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267 | # Guess file type for backward compatibility |
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268 | my $type = $info->{TYPE} ? $info->{TYPE} : &guess_file_type ($info->{SRC}); |
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269 | $ld = &get_env ($type . 'C', 1); |
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270 | } |
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271 | push @command, $ld; |
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272 | |
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273 | # Linker output target (typical -o option) |
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274 | push @command, &get_env ('LD_OUTPUT', 1), $info->{TARGET}; |
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275 | |
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276 | # Name of main object file |
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277 | my $mainobj = (basename ($info->{SRC}) eq $info->{SRC}) |
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278 | ? catfile (&get_env ('FCM_OBJDIR'), $info->{SRC}) |
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279 | : $info->{SRC}; |
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280 | push @command, $mainobj; |
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281 | |
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282 | # Link with Fortran BLOCKDATA objects if necessary |
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283 | if (@{ $info->{BLOCKDATA} }) { |
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284 | my @blockdata = @{ $info->{BLOCKDATA} }; |
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285 | my @objpath = split /:/, &get_env ('FCM_OBJPATH'); |
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286 | |
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287 | # Search each BLOCKDATA object file from the object search path |
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288 | for my $file (@blockdata) { |
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289 | for my $dir (@objpath) { |
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290 | my $full = catfile ($dir, $file); |
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291 | |
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292 | if (-r $full) { |
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293 | $file = $full; |
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294 | last; |
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295 | } |
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296 | } |
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297 | |
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298 | push @command, $file; |
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299 | } |
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300 | } |
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301 | |
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302 | # Library search path |
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303 | my $libopt = &get_env ('LD_LIBSEARCH', 1); |
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304 | my @libpath = split /:/, &get_env ('FCM_LIBPATH'); |
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305 | push @command, (map {$libopt . $_} @libpath); |
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306 | |
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307 | # Link with temporary object library if it exists |
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308 | push @command, &get_env ('LD_LIBLINK', 1) . $libname if -f $libfile; |
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309 | |
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310 | # Other linker flags |
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311 | my $flags = &select_flags ($info, 'LDFLAGS'); |
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312 | push @command, $flags; |
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313 | |
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314 | # Execute command |
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315 | my $tmpdir = &get_env ('FCM_TMPDIR', 1); |
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316 | my $bindir = &get_env ('FCM_BINDIR', 1); |
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317 | chdir $tmpdir; |
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318 | |
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319 | my $command = join ' ', @command; |
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320 | if ($verbose > 1) { |
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321 | print 'cd ', $tmpdir, "\n"; |
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322 | print ×tamp_command ($command, 'Start'); |
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323 | |
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324 | } elsif ($verbose) { |
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325 | print $command, "\n"; |
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326 | } |
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327 | |
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328 | $rc = system $command; |
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329 | |
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330 | print ×tamp_command ($command, 'End ') if $verbose > 1; |
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331 | |
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332 | # Move temporary output to correct location on success |
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333 | # Otherwise, remove temporary output |
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334 | if ($rc) { # error |
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335 | unlink $info->{TARGET}; |
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336 | |
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337 | } else { # success |
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338 | print 'mv ', $info->{TARGET}, ' ', $bindir, "\n" if $verbose > 1; |
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339 | rename $info->{TARGET}, &catfile ($bindir, $info->{TARGET}); |
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340 | } |
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341 | } |
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342 | |
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343 | # Remove the temporary object library |
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344 | unlink $libfile if -f $libfile; |
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345 | |
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346 | return $rc; |
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347 | } |
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348 | |
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349 | # ------------------------------------------------------------------------------ |
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350 | # SYNOPSIS |
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351 | # $rc = &archive (\%info); |
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352 | # |
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353 | # DESCRIPTION |
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354 | # This method invokes the library archiver to create an object library. The |
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355 | # argument $info is a hash reference set up in MAIN. The following |
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356 | # environment variables are used: |
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357 | # |
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358 | # AR - archiver command |
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359 | # ARFLAGS - AR options to update/create an object library |
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360 | # FCM_VERBOSE - verbose level |
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361 | # FCM_LIBDIR - destination directory of object libraries |
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362 | # FCM_OBJPATH - search path of object files |
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363 | # FCM_OBJDIR - destination directory of object files |
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364 | # FCM_TMPDIR - temporary destination directory of executable file |
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365 | # ------------------------------------------------------------------------------ |
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366 | |
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367 | sub archive { |
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368 | my $info = shift; |
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369 | |
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370 | my $rc = 0; |
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371 | |
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372 | # Verbose mode |
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373 | my $verbose = &get_env ('FCM_VERBOSE'); |
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374 | $verbose = 1 unless defined ($verbose); |
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375 | |
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376 | # Set up the archive command |
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377 | my $lib = &basename ($info->{TARGET}); |
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378 | my $tmplib = &catfile (&get_env ('FCM_TMPDIR', 1), $lib); |
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379 | my @ar_cmd = (); |
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380 | push @ar_cmd, (&get_env ('AR', 1), &get_env ('ARFLAGS', 1)); |
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381 | push @ar_cmd, $tmplib; |
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382 | |
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383 | # Get object directories and their files |
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384 | my %objdir; |
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385 | if (exists $info->{OBJECTS}) { |
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386 | # List of objects set in the argument, sort into directory/file list |
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387 | for my $name (@{ $info->{OBJECTS} }) { |
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388 | my $dir = (&dirname ($name) eq '.') |
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389 | ? &get_env ('FCM_OBJDIR', 1) : &dirname ($name); |
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390 | $objdir{$dir}{&basename ($name)} = 1; |
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391 | } |
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392 | |
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393 | } else { |
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394 | # Objects not listed in argument, search object path for all files |
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395 | my @objpath = split /:/, &get_env ('FCM_OBJPATH', 1); |
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396 | my %objbase = (); |
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397 | |
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398 | # Get registered objects into a hash (keys = objects, values = 1) |
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399 | my %objects = map {($_, 1)} split (/\s+/, &get_env ('OBJECTS')); |
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400 | |
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401 | # Seach object path for all files |
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402 | for my $dir (@objpath) { |
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403 | next unless -d $dir; |
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404 | |
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405 | chdir $dir; |
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406 | |
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407 | # Use all files from each directory in the object search path |
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408 | for ((glob ('*'))) { |
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409 | next unless exists $objects{$_}; # consider registered objects only |
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410 | $objdir{$dir}{$_} = 1 unless exists $objbase{$_}; |
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411 | $objbase{$_} = 1; |
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412 | } |
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413 | } |
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414 | } |
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415 | |
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416 | for my $dir (keys %objdir) { |
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417 | next unless -d $dir; |
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418 | |
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419 | # Go to each object directory and executes the library archive command |
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420 | chdir $dir; |
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421 | my $command = join ' ', (@ar_cmd, sort keys %{ $objdir{$dir} }); |
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422 | |
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423 | if ($verbose > 1) { |
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424 | print 'cd ', $dir, "\n"; |
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425 | print ×tamp_command ($command, 'Start'); |
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426 | |
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427 | } else { |
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428 | print $command, "\n" if exists $info->{OBJECTS}; |
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429 | } |
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430 | |
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431 | $rc = system $command; |
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432 | |
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433 | print ×tamp_command ($command, 'End ') |
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434 | if $verbose > 1; |
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435 | last if $rc; |
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436 | } |
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437 | |
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438 | # Move temporary output to correct location on success |
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439 | # Otherwise, remove temporary output |
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440 | if ($rc) { # error |
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441 | unlink $tmplib; |
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442 | |
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443 | } else { # success |
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444 | my $libdir = &get_env ('FCM_LIBDIR', 1); |
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445 | |
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446 | print 'mv ', $tmplib, ' ', $libdir, "\n" if $verbose > 1; |
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447 | rename $tmplib, &catfile ($libdir, $lib); |
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448 | } |
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449 | |
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450 | return $rc; |
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451 | } |
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452 | |
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453 | # ------------------------------------------------------------------------------ |
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454 | # SYNOPSIS |
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455 | # $type = &guess_file_type ($filename); |
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456 | # |
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457 | # DESCRIPTION |
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458 | # This function attempts to guess the file type by looking at the extension |
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459 | # of the $filename. Only C and Fortran at the moment. |
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460 | # ------------------------------------------------------------------------------ |
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461 | |
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462 | sub guess_file_type { |
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463 | return (($_[0] =~ /\.c(\w+)?$/i) ? 'C' : 'F'); |
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464 | } |
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465 | |
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466 | # ------------------------------------------------------------------------------ |
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467 | # SYNOPSIS |
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468 | # $flags = &select_flags (\%info, $set); |
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469 | # |
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470 | # DESCRIPTION |
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471 | # This function selects the correct compiler/linker flags for the current |
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472 | # sub-package from the environment variable prefix $set. The argument $info |
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473 | # is a hash reference set up in MAIN. |
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474 | # ------------------------------------------------------------------------------ |
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475 | |
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476 | sub select_flags { |
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477 | my ($info, $set) = @_; |
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478 | |
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479 | my $srcbase = &basename ($info->{SRC}); |
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480 | my @names = ($set); |
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481 | push @names, split (/__/, $info->{SRCPACKAGE} . '__' . $srcbase); |
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482 | |
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483 | my $string = ''; |
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484 | for my $i (reverse (0 .. $#names)) { |
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485 | my $var = &get_env (join ('__', (@names[0 .. $i]))); |
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486 | |
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487 | $var = &get_env (join ('__', (@names[0 .. $i]))) |
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488 | if (not defined ($var)) and $i and $names[-1] =~ s/\.[^\.]+$//; |
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489 | |
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490 | next unless defined $var; |
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491 | $string = $var; |
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492 | last; |
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493 | } |
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494 | |
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495 | return $string; |
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496 | } |
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497 | |
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498 | # ------------------------------------------------------------------------------ |
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499 | # SYNOPSIS |
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500 | # $variable = &get_env ($name); |
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501 | # $variable = &get_env ($name, $compulsory); |
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502 | # |
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503 | # DESCRIPTION |
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504 | # This internal method gets a variable from $ENV{$name}. If $compulsory is |
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505 | # set to true, it throws an error if the variable is a not set or is an empty |
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506 | # string. Otherwise, it returns C<undef> if the variable is not set. |
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507 | # ------------------------------------------------------------------------------ |
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508 | |
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509 | sub get_env { |
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510 | (my $name, my $compulsory) = @_; |
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511 | my $string; |
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512 | |
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513 | if ($name =~ /^\w+$/) { |
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514 | # $name contains only word characters, variable is exported normally |
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515 | die 'The environment variable "', $name, '" must be set, abort' |
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516 | if $compulsory and not exists $ENV{$name}; |
---|
517 | |
---|
518 | $string = exists $ENV{$name} ? $ENV{$name} : undef; |
---|
519 | |
---|
520 | } else { |
---|
521 | # $name contains unusual characters |
---|
522 | die 'The environment variable "', $name, '" must be set, abort' |
---|
523 | if $compulsory and not exists $unusual_tool_name{$name}; |
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524 | |
---|
525 | $string = exists $unusual_tool_name{$name} |
---|
526 | ? $unusual_tool_name{$name} : undef; |
---|
527 | } |
---|
528 | |
---|
529 | return $string; |
---|
530 | } |
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531 | |
---|
532 | # ------------------------------------------------------------------------------ |
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533 | # SYNOPSIS |
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534 | # $path = &catfile (@paths); |
---|
535 | # |
---|
536 | # DESCRIPTION |
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537 | # This is a local implementation of what is in the File::Spec module. |
---|
538 | # ------------------------------------------------------------------------------ |
---|
539 | |
---|
540 | sub catfile { |
---|
541 | my @names = split (m!/!, join ('/', @_)); |
---|
542 | my $path = shift @names; |
---|
543 | |
---|
544 | for my $name (@names) { |
---|
545 | $path .= '/' . $name if $name; |
---|
546 | } |
---|
547 | |
---|
548 | return $path; |
---|
549 | } |
---|
550 | |
---|
551 | # ------------------------------------------------------------------------------ |
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552 | # SYNOPSIS |
---|
553 | # $basename = &basename ($path); |
---|
554 | # |
---|
555 | # DESCRIPTION |
---|
556 | # This is a local implementation of what is in the File::Basename module. |
---|
557 | # ------------------------------------------------------------------------------ |
---|
558 | |
---|
559 | sub basename { |
---|
560 | my $name = $_[0]; |
---|
561 | |
---|
562 | $name =~ s{/*$}{}; # remove trailing slashes |
---|
563 | |
---|
564 | if ($name =~ m#.*/([^/]+)$#) { |
---|
565 | return $1; |
---|
566 | |
---|
567 | } else { |
---|
568 | return $name; |
---|
569 | } |
---|
570 | } |
---|
571 | |
---|
572 | # ------------------------------------------------------------------------------ |
---|
573 | # SYNOPSIS |
---|
574 | # $dirname = &dirname ($path); |
---|
575 | # |
---|
576 | # DESCRIPTION |
---|
577 | # This is a local implementation of what is in the File::Basename module. |
---|
578 | # ------------------------------------------------------------------------------ |
---|
579 | |
---|
580 | sub dirname { |
---|
581 | my $name = $_[0]; |
---|
582 | |
---|
583 | if ($name =~ m#^/+$#) { |
---|
584 | return '/'; # dirname of root is root |
---|
585 | |
---|
586 | } else { |
---|
587 | $name =~ s{/*$}{}; # remove trailing slashes |
---|
588 | |
---|
589 | if ($name =~ m#^(.*)/[^/]+$#) { |
---|
590 | my $dir = $1; |
---|
591 | $dir =~ s{/*$}{}; # remove trailing slashes |
---|
592 | return $dir; |
---|
593 | |
---|
594 | } else { |
---|
595 | return '.'; |
---|
596 | } |
---|
597 | } |
---|
598 | } |
---|
599 | |
---|
600 | # ------------------------------------------------------------------------------ |
---|
601 | |
---|
602 | __END__ |
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