Only include existent directories in libpath

Leont · bingos · commit df34e2a6119c · 2022-07-22T13:30:42.000+01:00
Otherwise, one can try to open non-existent directories, leading to
warnings about invalid dirhandles.
diff --git a/lib/ExtUtils/Liblist/Kid.pm b/lib/ExtUtils/Liblist/Kid.pm
@@ -62,6 +62,7 @@ sub _unix_os2_ext {
 		chomp(my @incpath = grep s/^ //, grep { /^#include </ .. /^End of search / } `$Config{cc} -E -v - </dev/null 2>&1 >/dev/null`);
 		unshift @libpath, map { s{/include[^/]*}{/lib}; $_ } @incpath
 	}
+	@libpath = grep -d, @libpath;
 
     if ( $^O eq 'darwin' or $^O eq 'next' )  {
         # 'escape' Mach-O ld -framework and -F flags, so they aren't dropped later on

Original file line number	Diff line number	Diff line change
`@@ -62,6 +62,7 @@ sub _unix_os2_ext {`
`62`	`62`	chomp(my @incpath = grep s/^ //, grep { /^#include </ .. /^End of search / } `$Config{cc} -E -v - </dev/null 2>&1 >/dev/null`);
`63`	`63`	`unshift @libpath, map { s{/include[^/]*}{/lib}; $_ } @incpath`
`64`	`64`	`}`
	`65`	`+ @libpath = grep -d, @libpath;`
`65`	`66`
`66`	`67`	`if ( $^O eq 'darwin' or $^O eq 'next' ) {`
`67`	`68`	`# 'escape' Mach-O ld -framework and -F flags, so they aren't dropped later on`