gnu: perl-xml-libxslt: Fix configure script.

* gnu/packages/patches/perl-xml-libxslt-fix-configure.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register patch.
* gnu/packages/xml.scm (perl-xml-libxslt)[origin]: Apply patch.

Change-Id: I9199c6e4de924c7425ccb06c3d7da12d9093b8a4

1 files changed, 34 insertions, 0 deletions

diff --git a/gnu/packages/patches/perl-xml-libxslt-fix-configure.patch b/gnu/packages/patches/perl-xml-libxslt-fix-configure.patch
new file mode 100644
index 0000000000..8433c30bed
--- /dev/null
+++ b/gnu/packages/patches/perl-xml-libxslt-fix-configure.patch
@@ -0,0 +1,34 @@
+Patch from https://github.com/shlomif/perl-XML-LibXSLT/commit/40fdc7f0.patch
+
+From 40fdc7f0443949d9556f0ecf15eb7777d543cee1 Mon Sep 17 00:00:00 2001
+From: Florian Weimer <fweimer@redhat.com>
+Date: Thu, 9 Feb 2023 19:28:14 +0100
+Subject: [PATCH] Avoid C implicit function declaration in Makefile.PL (C99
+ compat)
+
+Future compilers are likely not to support implicit function
+declarations.  Add a fake prototype so that the probes will
+not always fail with such compilers.
+---
+ Makefile.PL | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/Makefile.PL b/Makefile.PL
+index 079f8ea..d720b48 100644
+--- a/Makefile.PL
++++ b/Makefile.PL
+@@ -463,10 +463,11 @@ SRC
+             }
+         }
+         else {
+-
++	    # Use a fake prototype in the style of autoconf.
+             $result = try_link(<<"SRC", $libs);
+-blank() { return 0; }
+-int t() { ${func}(); return 0; }
++char blank(void) { return 0; }
++char ${func}(void);
++int t(void) { ${func}(); return 0; }
+ SRC
+         }
+     }