From: Søren Sandmann Pedersen <s...@redhat.com>
Previously we would unconditionally link with -lpng leading to build
failures on systems without libpng.
---
configure.ac | 2 +-
test/Makefile.am | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 21613e1..dc523df 100644
--- a/configure.ac
+++ b/configure.ac
@@ -804,7 +804,7 @@ AC_SUBST(TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR)
dnl ==================
dnl libpng
-AC_CHECK_LIB([png], [png_write_info], [have_libpng=yes], [have_libpng=no])
+PKG_CHECK_MODULES(PNG, [libpng], have_libpng=yes, have_libpng=no)
if test x$have_libpng = xyes; then
AC_DEFINE([HAVE_LIBPNG], [1], [Whether we have libpng])
diff --git a/test/Makefile.am b/test/Makefile.am
index 52ef8ad..6687bed 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,7 +1,7 @@
AM_CFLAGS = @OPENMP_CFLAGS@
AM_LDFLAGS = @OPENMP_CFLAGS@ @TESTPROGS_EXTRA_LDFLAGS@
-LDADD = $(top_builddir)/pixman/libpixman-1.la -lm -lpng
-INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman
+LDADD = $(top_builddir)/pixman/libpixman-1.la -lm @PNG_LIBS@
+INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman @PNG_CFLAGS@
TESTPROGRAMS = \
a1-trap-test \
--
1.6.0.6
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