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#!/usr/bin/awk
function which(c,path) {
cmd = "test -x " c;
if (system(cmd)==0) {
return c;
}
sub(/\/.*\//,"",c);
for (dir in path) {
cmd = "test -x " path[dir] "/" c;
if (system(cmd)==0) {
return path[dir] "/" c;
}
}
return c;
}
# used to replace "use lib utils.pm" with "use lib @libexecdir"
#
function led() {
led1 = "@libexecdir@";
led2 = "@exec_prefix@";
led3 = "@prefix@";
if ( match(led1, /^\$\{exec_prefix\}/ ) != 0 ) {
return "\"" led3 "/libexec\" " ;
}
return "\"" led1 "\"" ;
}
BEGIN {
split(ENVIRON["PATH"] ":/sbin:/usr/sbin",path,/:/);
}
# scripting language (first line)
/^#! ?\/.*\/python/ {sub(/^#! ?\/.*\/python/,"#! @PYTHON@");}
/^#! ?\/.*\/perl/ {sub(/^#! ?\/.*\/perl/,"#! @PERL@");}
/^#! ?\/.*\/[a-z]{0,2}awk/ {sub(/^#! ?\/.*\/[a-z]{0,2}awk/,"#! @AWK@");}
/^#! ?\/.*\/sh/ {sub(/^#! ?\/.*\/sh/,"#! @SHELL@");}
# add to libexecdir to INC for perl utils.pm
/^use/ { if (/lib/) { if (/utils.pm|"."/ ) {sub(/utils.pm|"."/,led() )} } }
# Trusted path mechanism (deprecated)
/^[ \t]*\$ENV[ \t]*\{[ \t'"]*PATH[ \t"']*\}[ \t]*=/ {
sub(/\=[ \t]*['"][^"']+["']/,"='@with_trusted_path@' # autoconf-derived");
}
/^[\t ]*(export[\t ]*)?PATH[\t ]*=['"]+.+["']$/ {
sub(/\=.*$/,"='@with_trusted_path@' # autoconf-derived");
}
# If a script contains a reference to a fully qualified command,
# subst will replace the fully qualified command with whatever is
# returned from the which subroutine
#
/^[^#]/ && /(\/.*)?\/(bin|sbin|lib|libexec)\// {
match($0,/(\/.*)?\/(bin|sbin|lib|libexec)\/[-_a-zA-Z0-9]+/);
c=substr($0,RSTART,RLENGTH);
sub(c,which(c,path));
}
{
print;
}
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