libxslt: Fix tests

textproc/libxslt/Portfile

@@ -29,6 +29,7 @@ use_xz          yes
 depends_build   path:bin/pkg-config:pkgconfig
 
 patchfiles      dynamic_lookup-11.patch \
+                tests.patch \
                 no-doc.patch
 
 configure.args  --without-python \
@@ -43,8 +44,6 @@ if {${name} eq ${subport}} {
                         port:libxml2 \
                         port:zlib
 
-# The test suite is currently failing to compile.
-# https://gitlab.gnome.org/GNOME/libxslt/-/issues/110
 test.run        yes
 test.target     check
 

textproc/libxslt/files/tests.patch

@@ -0,0 +1,13 @@
+https://gitlab.gnome.org/GNOME/libxslt/-/issues/110
+https://gitlab.gnome.org/GNOME/libxslt/-/commit/ea32b708bff62067caf8bb374dbb25a20c399748
+--- tests/Makefile.in.orig	2024-06-12 11:57:47.000000000 -0500
++++ tests/Makefile.in	2024-06-14 17:48:05.000000000 -0500
+@@ -434,7 +434,7 @@
+ @WITH_MODULES_TRUE@plugindir = $(abs_builddir)/.libs
+ @WITH_MODULES_TRUE@xmlsoft_org_xslt_testplugin_la_CFLAGS = $(AM_CFLAGS) -DMODULE_COMPILE
+ @WITH_MODULES_TRUE@xmlsoft_org_xslt_testplugin_la_SOURCES = testplugin.c
+-@WITH_MODULES_TRUE@xmlsoft_org_xslt_testplugin_la_LIBADD = $(top_builddir)/libxslt/libxslt.la $(EXTRA_LIBS)
++@WITH_MODULES_TRUE@xmlsoft_org_xslt_testplugin_la_LIBADD = $(top_builddir)/libxslt/libxslt.la $(LIBXML_LIBS) $(EXTRA_LIBS)
+ @WITH_MODULES_TRUE@xmlsoft_org_xslt_testplugin_la_LDFLAGS = \
+ @WITH_MODULES_TRUE@	$(AM_LDFLAGS) -no-undefined \
+ @WITH_MODULES_TRUE@	-module -avoid-version -rpath $(plugindir)