22 lines
1004 B
Tcsh
22 lines
1004 B
Tcsh
#!/bin/csh
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# usage: source addlibpath.csh new_path
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# this script requires a normalized $PATH:
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# 1. each path except the last one must be followed by ":" without any whitespace;
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# 2. each path is NOT finished by "/"
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# besides, the input parameter $1 is NOT finished by "/".
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# Purpose of the normalization is to match $ENV{NEWPATH}(:\|$)
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# it must be explicitly exported because Perl only add environment variables to %ENV, not those shell variables:
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setenv NEWPATH $1
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# on windows, we must use /usr/bin/perl from cygwin, because ActivePerl doesn't work on following line:
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if ('no' == `/usr/bin/perl -e 'if ($ENV{LD_LIBRARY_PATH} =~ m|$ENV{NEWPATH}(:\|$)|) {exec "echo yes"} else {exec "echo no"}'`) then
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if (${?LD_LIBRARY_PATH} == 1) then # you must enclose {?LD_LIBRARY_PATH}, otherwise it checks LD instead of LD_LIBRARY_PATH
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setenv LD_LIBRARY_PATH ${1}:${LD_LIBRARY_PATH} # $1 must be enclosed with {}, otherwise it cannot be parsed.
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else
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setenv LD_LIBRARY_PATH ${1}
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endif
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endif
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