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-rw-r--r--Build/source/texk/dvisvgm/config.h.in6
-rwxr-xr-xBuild/source/texk/dvisvgm/configure41
2 files changed, 47 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/config.h.in b/Build/source/texk/dvisvgm/config.h.in
index aa5bbd51f51..a05ced4c230 100644
--- a/Build/source/texk/dvisvgm/config.h.in
+++ b/Build/source/texk/dvisvgm/config.h.in
@@ -172,6 +172,9 @@
/* Version number of package */
#undef VERSION
+/* Define to 1 if <zlib.h> declares 'z_const'. */
+#undef ZLIB_CONST
+
/* Enable large inode numbers on Mac OS X 10.5. */
#ifndef _DARWIN_USE_64_BIT_INODE
# define _DARWIN_USE_64_BIT_INODE 1
@@ -210,3 +213,6 @@
/* Define to the type of an unsigned integer type of width exactly 64 bits if
such a type exists and the standard includes do not define it. */
#undef uint64_t
+
+/* Define as empty if not declared in <zlib.h>. */
+#undef z_const
diff --git a/Build/source/texk/dvisvgm/configure b/Build/source/texk/dvisvgm/configure
index 0426a5455de..f040ac95c3b 100755
--- a/Build/source/texk/dvisvgm/configure
+++ b/Build/source/texk/dvisvgm/configure
@@ -19089,6 +19089,47 @@ $(ZLIB_DEPEND): ${top_builddir}/../../libs/zlib/include/zconf.h
${top_builddir}/../../libs/zlib/include/zconf.h:
cd ${top_builddir}/../../libs/zlib && $(MAKE) $(AM_MAKEFLAGS) rebuild'
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if <zlib.h> defines 'z_const'" >&5
+$as_echo_n "checking if <zlib.h> defines 'z_const'... " >&6; }
+if ${kpse_cv_have_decl_z_const+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ eval CPPFLAGS=\"$ZLIB_INCLUDES \$CPPFLAGS\"
+eval LIBS=\"$ZLIB_LIBS \$LIBS\"
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <zlib.h>
+int
+main ()
+{
+z_const char * foo();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ kpse_cv_have_decl_z_const=yes
+else
+ kpse_cv_have_decl_z_const=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CPPFLAGS=$kpse_save_CPPFLAGS
+LIBS=$kpse_save_LIBS
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $kpse_cv_have_decl_z_const" >&5
+$as_echo "$kpse_cv_have_decl_z_const" >&6; }
+case $kpse_cv_have_decl_z_const in #(
+ yes) :
+
+$as_echo "#define ZLIB_CONST 1" >>confdefs.h
+ ;; #(
+ *) :
+
+$as_echo "#define z_const /**/" >>confdefs.h
+ ;;
+esac
## _KPSE_LIB_FLAGS: Setup freetype2 (-lfreetype) flags