| Subject: | can't find gcc-4 on cygwin (patch to fix) |
Hi there, the Makefile.PL incorrectly is unable to find gcc-4 on cygwin:
Config.pm indicates that your version of Perl was built with this C compiler:
gcc-4
I cannot locate this compiler on your system.
This patch fixes it:
--- a/C/Makefile.PL
+++ b/C/Makefile.PL
@@ -5,6 +5,7 @@ use File::Spec;
my ($cc, $exe) = @Config{'cc', '_exe'};
$cc =~ s/\s+-.+$//; #remove possible trailing options
+$exe = '' if $^O eq 'cygwin';
my $found = 0;
my $delim = $Config::Config{path_sep};
explanation: Although executable by convention end in .exe on Cygwin, programs in the PATH, may actually be a symlink without an extension, as is the case with gcc-4:
fs01% ls -l /usr/bin/gcc-4*
lrwxrwxrwx 1 ollisg None 7 Sep 13 10:42 /usr/bin/gcc-4 -> gcc.exe*
The patch above still also works if $Config{cc} is not a symlink and does have the .exe extension, because on Cygwin -f (and friends) works both with and without the extension for executable. For example:
fs01% ls -l /usr/bin/df*
-rwx------+ 1 ollisg None 90638 Feb 6 2012 /usr/bin/df.exe*
fs01% perl -E 'say -f "/usr/bin/df"'
1
fs01% perl -E 'say -f "/usr/bin/df.exe"'
1