Initial Commit
This commit is contained in:
Riley Schneider
628
database/perl/vendor/lib/Devel/CheckLib.pm
vendored
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628
database/perl/vendor/lib/Devel/CheckLib.pm
vendored
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@@ -0,0 +1,628 @@
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# $Id: CheckLib.pm,v 1.25 2008/10/27 12:16:23 drhyde Exp $
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package Devel::CheckLib;
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use 5.00405; #postfix foreach
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use strict;
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use vars qw($VERSION @ISA @EXPORT);
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$VERSION = '1.14';
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use Config qw(%Config);
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use Text::ParseWords 'quotewords';
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use File::Spec;
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use File::Temp;
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require Exporter;
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@ISA = qw(Exporter);
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@EXPORT = qw(assert_lib check_lib_or_exit check_lib);
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# localising prevents the warningness leaking out of this module
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local $^W = 1; # use warnings is a 5.6-ism
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_findcc(); # bomb out early if there's no compiler
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=head1 NAME
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Devel::CheckLib - check that a library is available
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=head1 DESCRIPTION
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Devel::CheckLib is a perl module that checks whether a particular C
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library and its headers are available.
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=head1 SYNOPSIS
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use Devel::CheckLib;
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check_lib_or_exit( lib => 'jpeg', header => 'jpeglib.h' );
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check_lib_or_exit( lib => [ 'iconv', 'jpeg' ] );
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# or prompt for path to library and then do this:
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check_lib_or_exit( lib => 'jpeg', libpath => $additional_path );
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=head1 USING IT IN Makefile.PL or Build.PL
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If you want to use this from Makefile.PL or Build.PL, do
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not simply copy the module into your distribution as this may cause
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problems when PAUSE and search.cpan.org index the distro. Instead, use
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the use-devel-checklib script.
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=head1 HOW IT WORKS
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You pass named parameters to a function, describing to it how to build
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and link to the libraries.
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It works by trying to compile some code - which defaults to this:
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int main(int argc, char *argv[]) { return 0; }
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and linking it to the specified libraries. If something pops out the end
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which looks executable, it gets executed, and if main() returns 0 we know
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that it worked. That tiny program is
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built once for each library that you specify, and (without linking) once
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for each header file.
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If you want to check for the presence of particular functions in a
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library, or even that those functions return particular results, then
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you can pass your own function body for main() thus:
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check_lib_or_exit(
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function => 'foo();if(libversion() > 5) return 0; else return 1;'
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incpath => ...
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libpath => ...
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lib => ...
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header => ...
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);
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In that case, it will fail to build if either foo() or libversion() don't
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exist, and main() will return the wrong value if libversion()'s return
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value isn't what you want.
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=head1 FUNCTIONS
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All of these take the same named parameters and are exported by default.
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To avoid exporting them, C<use Devel::CheckLib ()>.
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=head2 assert_lib
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This takes several named parameters, all of which are optional, and dies
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with an error message if any of the libraries listed can
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not be found. B<Note>: dying in a Makefile.PL or Build.PL may provoke
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a 'FAIL' report from CPAN Testers' automated smoke testers. Use
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C<check_lib_or_exit> instead.
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The named parameters are:
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=over
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=item lib
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Must be either a string with the name of a single
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library or a reference to an array of strings of library names. Depending
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on the compiler found, library names will be fed to the compiler either as
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C<-l> arguments or as C<.lib> file names. (E.g. C<-ljpeg> or C<jpeg.lib>)
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=item libpath
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a string or an array of strings
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representing additional paths to search for libraries.
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=item LIBS
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a C<ExtUtils::MakeMaker>-style space-separated list of
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libraries (each preceded by '-l') and directories (preceded by '-L').
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This can also be supplied on the command-line.
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=item debug
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If true - emit information during processing that can be used for
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debugging.
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=back
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And libraries are no use without header files, so ...
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=over
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=item header
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Must be either a string with the name of a single
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header file or a reference to an array of strings of header file names.
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=item incpath
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a string or an array of strings
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representing additional paths to search for headers.
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=item INC
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a C<ExtUtils::MakeMaker>-style space-separated list of
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incpaths, each preceded by '-I'.
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This can also be supplied on the command-line.
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=item ccflags
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Extra flags to pass to the compiler.
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=item ldflags
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Extra flags to pass to the linker.
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|
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=item analyze_binary
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|
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a callback function that will be invoked in order to perform custom
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analysis of the generated binary. The callback arguments are the
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library name and the path to the binary just compiled.
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It is possible to use this callback, for instance, to inspect the
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binary for further dependencies.
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=item not_execute
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Do not try to execute generated binary. Only check that compilation has not failed.
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=back
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=head2 check_lib_or_exit
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This behaves exactly the same as C<assert_lib()> except that instead of
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dieing, it warns (with exactly the same error message) and exits.
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This is intended for use in Makefile.PL / Build.PL
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when you might want to prompt the user for various paths and
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things before checking that what they've told you is sane.
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If any library or header is missing, it exits with an exit value of 0 to avoid
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causing a CPAN Testers 'FAIL' report. CPAN Testers should ignore this
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result -- which is what you want if an external library dependency is not
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available.
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=head2 check_lib
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This behaves exactly the same as C<assert_lib()> except that it is silent,
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returning false instead of dieing, or true otherwise.
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=cut
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sub check_lib_or_exit {
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eval 'assert_lib(@_)';
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if($@) {
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warn $@;
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exit;
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}
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}
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sub check_lib {
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eval 'assert_lib(@_)';
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return $@ ? 0 : 1;
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}
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# borrowed from Text::ParseWords
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sub _parse_line {
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my($delimiter, $keep, $line) = @_;
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my($word, @pieces);
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no warnings 'uninitialized'; # we will be testing undef strings
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while (length($line)) {
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# This pattern is optimised to be stack conservative on older perls.
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# Do not refactor without being careful and testing it on very long strings.
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# See Perl bug #42980 for an example of a stack busting input.
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$line =~ s/^
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(?:
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# double quoted string
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(") # $quote
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((?>[^\\"]*(?:\\.[^\\"]*)*))" # $quoted
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| # --OR--
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# singe quoted string
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(') # $quote
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((?>[^\\']*(?:\\.[^\\']*)*))' # $quoted
|
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| # --OR--
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# unquoted string
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( # $unquoted
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(?:\\.|[^\\"'])*?
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)
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# followed by
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( # $delim
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\Z(?!\n) # EOL
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| # --OR--
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(?-x:$delimiter) # delimiter
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| # --OR--
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(?!^)(?=["']) # a quote
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)
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)//xs or return; # extended layout
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my ($quote, $quoted, $unquoted, $delim) = (($1 ? ($1,$2) : ($3,$4)), $5, $6);
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return() unless( defined($quote) || length($unquoted) || length($delim));
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if ($keep) {
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$quoted = "$quote$quoted$quote";
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}
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else {
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$unquoted =~ s/\\(.)/$1/sg;
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if (defined $quote) {
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$quoted =~ s/\\(.)/$1/sg if ($quote eq '"');
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}
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}
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$word .= substr($line, 0, 0); # leave results tainted
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$word .= defined $quote ? $quoted : $unquoted;
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|
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if (length($delim)) {
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push(@pieces, $word);
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push(@pieces, $delim) if ($keep eq 'delimiters');
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undef $word;
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}
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if (!length($line)) {
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push(@pieces, $word);
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}
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}
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return(@pieces);
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}
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sub assert_lib {
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my %args = @_;
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my (@libs, @libpaths, @headers, @incpaths);
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|
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# FIXME: these four just SCREAM "refactor" at me
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@libs = (ref($args{lib}) ? @{$args{lib}} : $args{lib})
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if $args{lib};
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@libpaths = (ref($args{libpath}) ? @{$args{libpath}} : $args{libpath})
|
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if $args{libpath};
|
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@headers = (ref($args{header}) ? @{$args{header}} : $args{header})
|
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if $args{header};
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@incpaths = (ref($args{incpath}) ? @{$args{incpath}} : $args{incpath})
|
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if $args{incpath};
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my $analyze_binary = $args{analyze_binary};
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my $not_execute = $args{not_execute};
|
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|
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my @argv = @ARGV;
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push @argv, _parse_line('\s+', 0, $ENV{PERL_MM_OPT}||'');
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|
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# work-a-like for Makefile.PL's LIBS and INC arguments
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# if given as command-line argument, append to %args
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for my $arg (@argv) {
|
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for my $mm_attr_key (qw(LIBS INC)) {
|
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if (my ($mm_attr_value) = $arg =~ /\A $mm_attr_key = (.*)/x) {
|
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# it is tempting to put some \s* into the expression, but the
|
||||
# MM command-line parser only accepts LIBS etc. followed by =,
|
||||
# so we should not be any more lenient with whitespace than that
|
||||
$args{$mm_attr_key} .= " $mm_attr_value";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
# using special form of split to trim whitespace
|
||||
if(defined($args{LIBS})) {
|
||||
foreach my $arg (split(' ', $args{LIBS})) {
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die("LIBS argument badly-formed: $arg\n") unless($arg =~ /^-[lLR]/);
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push @{$arg =~ /^-l/ ? \@libs : \@libpaths}, substr($arg, 2);
|
||||
}
|
||||
}
|
||||
if(defined($args{INC})) {
|
||||
foreach my $arg (split(' ', $args{INC})) {
|
||||
die("INC argument badly-formed: $arg\n") unless($arg =~ /^-I/);
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push @incpaths, substr($arg, 2);
|
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}
|
||||
}
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|
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my ($cc, $ld) = _findcc($args{debug}, $args{ccflags}, $args{ldflags});
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my @missing;
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my @wrongresult;
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my @wronganalysis;
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my @use_headers;
|
||||
|
||||
# first figure out which headers we can't find ...
|
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for my $header (@headers) {
|
||||
push @use_headers, $header;
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my($ch, $cfile) = File::Temp::tempfile(
|
||||
'assertlibXXXXXXXX', SUFFIX => '.c'
|
||||
);
|
||||
my $ofile = $cfile;
|
||||
$ofile =~ s/\.c$/$Config{_o}/;
|
||||
print $ch qq{#include <$_>\n} for @use_headers;
|
||||
print $ch qq{int main(void) { return 0; }\n};
|
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close($ch);
|
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my $exefile = File::Temp::mktemp( 'assertlibXXXXXXXX' ) . $Config{_exe};
|
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my @sys_cmd;
|
||||
# FIXME: re-factor - almost identical code later when linking
|
||||
if ( $Config{cc} eq 'cl' ) { # Microsoft compiler
|
||||
require Win32;
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
$cfile,
|
||||
"/Fe$exefile",
|
||||
(map { '/I'.Win32::GetShortPathName($_) } @incpaths),
|
||||
"/link",
|
||||
@$ld,
|
||||
split(' ', $Config{libs}),
|
||||
);
|
||||
} elsif($Config{cc} =~ /bcc32(\.exe)?/) { # Borland
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
@$ld,
|
||||
(map { "-I$_" } @incpaths),
|
||||
"-o$exefile",
|
||||
$cfile
|
||||
);
|
||||
} else { # Unix-ish: gcc, Sun, AIX (gcc, cc), ...
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
(map { "-I$_" } @incpaths),
|
||||
$cfile,
|
||||
@$ld,
|
||||
"-o", "$exefile"
|
||||
);
|
||||
}
|
||||
warn "# @sys_cmd\n" if $args{debug};
|
||||
my $rv = $args{debug} ? system(@sys_cmd) : _quiet_system(@sys_cmd);
|
||||
push @missing, $header if $rv != 0 || ! -f $exefile;
|
||||
_cleanup_exe($exefile);
|
||||
unlink $cfile;
|
||||
}
|
||||
|
||||
# now do each library in turn with headers
|
||||
my($ch, $cfile) = File::Temp::tempfile(
|
||||
'assertlibXXXXXXXX', SUFFIX => '.c'
|
||||
);
|
||||
my $ofile = $cfile;
|
||||
$ofile =~ s/\.c$/$Config{_o}/;
|
||||
print $ch qq{#include <$_>\n} foreach (@headers);
|
||||
print $ch "int main(int argc, char *argv[]) { ".($args{function} || 'return 0;')." }\n";
|
||||
close($ch);
|
||||
for my $lib ( @libs ) {
|
||||
my $exefile = File::Temp::mktemp( 'assertlibXXXXXXXX' ) . $Config{_exe};
|
||||
my @sys_cmd;
|
||||
if ( $Config{cc} eq 'cl' ) { # Microsoft compiler
|
||||
require Win32;
|
||||
my @libpath = map {
|
||||
q{/libpath:} . Win32::GetShortPathName($_)
|
||||
} @libpaths;
|
||||
# this is horribly sensitive to the order of arguments
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
$cfile,
|
||||
"${lib}.lib",
|
||||
"/Fe$exefile",
|
||||
(map { '/I'.Win32::GetShortPathName($_) } @incpaths),
|
||||
"/link",
|
||||
@$ld,
|
||||
split(' ', $Config{libs}),
|
||||
(map {'/libpath:'.Win32::GetShortPathName($_)} @libpaths),
|
||||
);
|
||||
} elsif($Config{cc} eq 'CC/DECC') { # VMS
|
||||
} elsif($Config{cc} =~ /bcc32(\.exe)?/) { # Borland
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
@$ld,
|
||||
"-o$exefile",
|
||||
(map { "-I$_" } @incpaths),
|
||||
(map { "-L$_" } @libpaths),
|
||||
"-l$lib",
|
||||
$cfile);
|
||||
} else { # Unix-ish
|
||||
# gcc, Sun, AIX (gcc, cc)
|
||||
@sys_cmd = (
|
||||
@$cc,
|
||||
(map { "-I$_" } @incpaths),
|
||||
$cfile,
|
||||
(map { "-L$_" } @libpaths),
|
||||
"-l$lib",
|
||||
@$ld,
|
||||
"-o", "$exefile",
|
||||
);
|
||||
}
|
||||
warn "# @sys_cmd\n" if $args{debug};
|
||||
local $ENV{LD_RUN_PATH} = join(":", grep $_, @libpaths, $ENV{LD_RUN_PATH}) unless $^O eq 'MSWin32';
|
||||
local $ENV{PATH} = join(";", @libpaths).";".$ENV{PATH} if $^O eq 'MSWin32';
|
||||
my $rv = $args{debug} ? system(@sys_cmd) : _quiet_system(@sys_cmd);
|
||||
if ($rv != 0 || ! -f $exefile) {
|
||||
push @missing, $lib;
|
||||
}
|
||||
else {
|
||||
chmod 0755, $exefile;
|
||||
my $absexefile = File::Spec->rel2abs($exefile);
|
||||
$absexefile = '"'.$absexefile.'"' if $absexefile =~ m/\s/;
|
||||
if (!$not_execute && system($absexefile) != 0) {
|
||||
push @wrongresult, $lib;
|
||||
}
|
||||
else {
|
||||
if ($analyze_binary) {
|
||||
push @wronganalysis, $lib if !$analyze_binary->($lib, $exefile)
|
||||
}
|
||||
}
|
||||
}
|
||||
_cleanup_exe($exefile);
|
||||
}
|
||||
unlink $cfile;
|
||||
|
||||
my $miss_string = join( q{, }, map { qq{'$_'} } @missing );
|
||||
die("Can't link/include C library $miss_string, aborting.\n") if @missing;
|
||||
my $wrong_string = join( q{, }, map { qq{'$_'} } @wrongresult);
|
||||
die("wrong result: $wrong_string\n") if @wrongresult;
|
||||
my $analysis_string = join(q{, }, map { qq{'$_'} } @wronganalysis );
|
||||
die("wrong analysis: $analysis_string") if @wronganalysis;
|
||||
}
|
||||
|
||||
sub _cleanup_exe {
|
||||
my ($exefile) = @_;
|
||||
my $ofile = $exefile;
|
||||
$ofile =~ s/$Config{_exe}$/$Config{_o}/;
|
||||
# List of files to remove
|
||||
my @rmfiles;
|
||||
push @rmfiles, $exefile, $ofile, "$exefile\.manifest";
|
||||
if ( $Config{cc} eq 'cl' ) {
|
||||
# MSVC also creates foo.ilk and foo.pdb
|
||||
my $ilkfile = $exefile;
|
||||
$ilkfile =~ s/$Config{_exe}$/.ilk/;
|
||||
my $pdbfile = $exefile;
|
||||
$pdbfile =~ s/$Config{_exe}$/.pdb/;
|
||||
push @rmfiles, $ilkfile, $pdbfile;
|
||||
}
|
||||
foreach (@rmfiles) {
|
||||
if ( -f $_ ) {
|
||||
unlink $_ or warn "Could not remove $_: $!";
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
# return ($cc, $ld)
|
||||
# where $cc is an array ref of compiler name, compiler flags
|
||||
# where $ld is an array ref of linker flags
|
||||
sub _findcc {
|
||||
my ($debug, $user_ccflags, $user_ldflags) = @_;
|
||||
# Need to use $keep=1 to work with MSWin32 backslashes and quotes
|
||||
my $Config_ccflags = $Config{ccflags}; # use copy so ASPerl will compile
|
||||
my @Config_ldflags = ();
|
||||
for my $config_val ( @Config{qw(ldflags)} ){
|
||||
push @Config_ldflags, $config_val if ( $config_val =~ /\S/ );
|
||||
}
|
||||
my @ccflags = grep { length } quotewords('\s+', 1, $Config_ccflags||'', $user_ccflags||'');
|
||||
my @ldflags = grep { length && $_ !~ m/^-Wl/ } quotewords('\s+', 1, @Config_ldflags, $user_ldflags||'');
|
||||
my @paths = split(/$Config{path_sep}/, $ENV{PATH});
|
||||
my @cc = split(/\s+/, $Config{cc});
|
||||
if (check_compiler ($cc[0], $debug)) {
|
||||
return ( [ @cc, @ccflags ], \@ldflags );
|
||||
}
|
||||
# Find the extension for executables.
|
||||
my $exe = $Config{_exe};
|
||||
if ($^O eq 'cygwin') {
|
||||
$exe = '';
|
||||
}
|
||||
foreach my $path (@paths) {
|
||||
# Look for "$path/$cc[0].exe"
|
||||
my $compiler = File::Spec->catfile($path, $cc[0]) . $exe;
|
||||
if (check_compiler ($compiler, $debug)) {
|
||||
return ([ $compiler, @cc[1 .. $#cc], @ccflags ], \@ldflags)
|
||||
}
|
||||
next if ! $exe;
|
||||
# Look for "$path/$cc[0]" without the .exe, if necessary.
|
||||
$compiler = File::Spec->catfile($path, $cc[0]);
|
||||
if (check_compiler ($compiler, $debug)) {
|
||||
return ([ $compiler, @cc[1 .. $#cc], @ccflags ], \@ldflags)
|
||||
}
|
||||
}
|
||||
die("Couldn't find your C compiler.\n");
|
||||
}
|
||||
|
||||
sub check_compiler
|
||||
{
|
||||
my ($compiler, $debug) = @_;
|
||||
if (-f $compiler && -x $compiler) {
|
||||
if ($debug) {
|
||||
warn("# Compiler seems to be $compiler\n");
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
return '';
|
||||
}
|
||||
|
||||
|
||||
# code substantially borrowed from IPC::Run3
|
||||
sub _quiet_system {
|
||||
my (@cmd) = @_;
|
||||
|
||||
# save handles
|
||||
local *STDOUT_SAVE;
|
||||
local *STDERR_SAVE;
|
||||
open STDOUT_SAVE, ">&STDOUT" or die "CheckLib: $! saving STDOUT";
|
||||
open STDERR_SAVE, ">&STDERR" or die "CheckLib: $! saving STDERR";
|
||||
|
||||
# redirect to nowhere
|
||||
local *DEV_NULL;
|
||||
open DEV_NULL, ">" . File::Spec->devnull
|
||||
or die "CheckLib: $! opening handle to null device";
|
||||
open STDOUT, ">&" . fileno DEV_NULL
|
||||
or die "CheckLib: $! redirecting STDOUT to null handle";
|
||||
open STDERR, ">&" . fileno DEV_NULL
|
||||
or die "CheckLib: $! redirecting STDERR to null handle";
|
||||
|
||||
# run system command
|
||||
my $rv = system(@cmd);
|
||||
|
||||
# restore handles
|
||||
open STDOUT, ">&" . fileno STDOUT_SAVE
|
||||
or die "CheckLib: $! restoring STDOUT handle";
|
||||
open STDERR, ">&" . fileno STDERR_SAVE
|
||||
or die "CheckLib: $! restoring STDERR handle";
|
||||
|
||||
return $rv;
|
||||
}
|
||||
|
||||
=head1 PLATFORMS SUPPORTED
|
||||
|
||||
You must have a C compiler installed. We check for C<$Config{cc}>,
|
||||
both literally as it is in Config.pm and also in the $PATH.
|
||||
|
||||
It has been tested with varying degrees of rigorousness on:
|
||||
|
||||
=over
|
||||
|
||||
=item gcc (on Linux, *BSD, Mac OS X, Solaris, Cygwin)
|
||||
|
||||
=item Sun's compiler tools on Solaris
|
||||
|
||||
=item IBM's tools on AIX
|
||||
|
||||
=item SGI's tools on Irix 6.5
|
||||
|
||||
=item Microsoft's tools on Windows
|
||||
|
||||
=item MinGW on Windows (with Strawberry Perl)
|
||||
|
||||
=item Borland's tools on Windows
|
||||
|
||||
=item QNX
|
||||
|
||||
=back
|
||||
|
||||
=head1 WARNINGS, BUGS and FEEDBACK
|
||||
|
||||
This is a very early release intended primarily for feedback from
|
||||
people who have discussed it. The interface may change and it has
|
||||
not been adequately tested.
|
||||
|
||||
Feedback is most welcome, including constructive criticism.
|
||||
Bug reports should be made using L<http://rt.cpan.org/> or by email.
|
||||
|
||||
When submitting a bug report, please include the output from running:
|
||||
|
||||
perl -V
|
||||
perl -MDevel::CheckLib -e0
|
||||
|
||||
=head1 SEE ALSO
|
||||
|
||||
L<Devel::CheckOS>
|
||||
|
||||
L<Probe::Perl>
|
||||
|
||||
=head1 AUTHORS
|
||||
|
||||
David Cantrell E<lt>david@cantrell.org.ukE<gt>
|
||||
|
||||
David Golden E<lt>dagolden@cpan.orgE<gt>
|
||||
|
||||
Yasuhiro Matsumoto E<lt>mattn@cpan.orgE<gt>
|
||||
|
||||
Thanks to the cpan-testers-discuss mailing list for prompting us to write it
|
||||
in the first place;
|
||||
|
||||
to Chris Williams for help with Borland support;
|
||||
|
||||
to Tony Cook for help with Microsoft compiler command-line options
|
||||
|
||||
=head1 COPYRIGHT and LICENCE
|
||||
|
||||
Copyright 2007 David Cantrell. Portions copyright 2007 David Golden.
|
||||
|
||||
This module is free-as-in-speech software, and may be used, distributed,
|
||||
and modified under the same conditions as perl itself.
|
||||
|
||||
=head1 CONSPIRACY
|
||||
|
||||
This module is also free-as-in-mason software.
|
||||
|
||||
=cut
|
||||
|
||||
1;
|
||||
Reference in New Issue
Block a user