build: Use linker version scripts to control visibility.

Signed-off-by: Józef Kucia <jkucia@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

Makefile.am

@@ -68,6 +68,9 @@ libvkd3d_shader_la_SOURCES = \
 	libs/vkd3d-shader/vkd3d_shader_main.c \
 	libs/vkd3d-shader/vkd3d_shader_private.h
 libvkd3d_shader_la_LIBADD = libvkd3d-common.la @SPIRV_TOOLS_LIBS@
+if HAVE_LD_VERSION_SCRIPT
+libvkd3d_shader_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libs/vkd3d-shader/vkd3d_shader.map
+endif
 
 libvkd3d_la_SOURCES = \
 	include/d3d12.idl \
@@ -85,11 +88,17 @@ libvkd3d_la_SOURCES = \
 	libs/vkd3d/vkd3d_private.h \
 	libs/vkd3d/vulkan_procs.h
 libvkd3d_la_LIBADD = libvkd3d-common.la libvkd3d-shader.la @PTHREAD_LIBS@ @VULKAN_LIBS@
+if HAVE_LD_VERSION_SCRIPT
+libvkd3d_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libs/vkd3d/vkd3d.map
+endif
 
 libvkd3d_utils_la_SOURCES = \
 	libs/vkd3d-utils/vkd3d_utils_main.c \
 	libs/vkd3d-utils/vkd3d_utils_private.h
 libvkd3d_utils_la_LIBADD = libvkd3d-common.la libvkd3d.la
+if HAVE_LD_VERSION_SCRIPT
+libvkd3d_utils_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libs/vkd3d-utils/vkd3d_utils.map
+endif
 
 EXTRA_DIST = LICENSE
 

configure.ac

@@ -30,6 +30,8 @@ AM_SILENT_RULES([yes])
 LT_PREREQ([2.4.2])
 LT_INIT
 
+gl_LD_VERSION_SCRIPT
+
 dnl Check compiler specific flags
 AC_SUBST([VKD3D_CFLAGS])
 AS_IF([test "x${GCC}" = "xyes"],

libs/vkd3d-shader/vkd3d_shader.map

@@ -0,0 +1,14 @@
+{
+global:
+    vkd3d_shader_compile_dxbc;
+    vkd3d_shader_find_signature_element;
+    vkd3d_shader_free_root_signature;
+    vkd3d_shader_free_shader_code;
+    vkd3d_shader_free_shader_signature;
+    vkd3d_shader_parse_input_signature;
+    vkd3d_shader_parse_root_signature;
+    vkd3d_shader_scan_dxbc;
+    vkd3d_shader_serialize_root_signature;
+
+local: *;
+};

libs/vkd3d-utils/vkd3d_utils.map

@@ -0,0 +1,13 @@
+{
+global:
+    D3D12CreateDevice;
+    D3D12CreateRootSignatureDeserializer;
+    D3D12GetDebugInterface;
+    D3D12SerializeRootSignature;
+    vkd3d_create_event;
+    vkd3d_destroy_event;
+    vkd3d_signal_event;
+    vkd3d_wait_event;
+
+local: *;
+};

libs/vkd3d/vkd3d.map

@@ -0,0 +1,18 @@
+{
+global:
+    vkd3d_create_device;
+    vkd3d_create_image_resource;
+    vkd3d_create_instance;
+    vkd3d_create_root_signature_deserializer;
+    vkd3d_get_vk_device;
+    vkd3d_get_vk_format;
+    vkd3d_get_vk_instance;
+    vkd3d_get_vk_physical_device;
+    vkd3d_get_vk_queue;
+    vkd3d_get_vk_queue_family_index;
+    vkd3d_instance_decref;
+    vkd3d_instance_incref;
+    vkd3d_serialize_root_signature;
+
+local: *;
+};

m4/ld-version-script.m4

@@ -0,0 +1,48 @@
+# ld-version-script.m4 serial 4
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# FIXME: The test below returns a false positive for mingw
+# cross-compiles, 'local:' statements does not reduce number of
+# exported symbols in a DLL.  Use --disable-ld-version-script to work
+# around the problem.
+
+# gl_LD_VERSION_SCRIPT
+# --------------------
+# Check if LD supports linker scripts, and define automake conditional
+# HAVE_LD_VERSION_SCRIPT if so.
+AC_DEFUN([gl_LD_VERSION_SCRIPT],
+[
+  AC_ARG_ENABLE([ld-version-script],
+    [AS_HELP_STRING([--enable-ld-version-script],
+       [enable linker version script (default is enabled when possible)])],
+    [have_ld_version_script=$enableval],
+    [AC_CACHE_CHECK([if LD -Wl,--version-script works],
+       [gl_cv_sys_ld_version_script],
+       [gl_cv_sys_ld_version_script=no
+        save_LDFLAGS=$LDFLAGS
+        LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
+        echo foo >conftest.map
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+          [],
+          [cat > conftest.map <<EOF
+VERS_1 {
+        global: sym;
+};
+
+VERS_2 {
+        global: sym;
+} VERS_1;
+EOF
+           AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+             [gl_cv_sys_ld_version_script=yes])])
+        rm -f conftest.map
+        LDFLAGS=$save_LDFLAGS])
+     have_ld_version_script=$gl_cv_sys_ld_version_script])
+  AM_CONDITIONAL([HAVE_LD_VERSION_SCRIPT],
+    [test "$have_ld_version_script" = yes])
+])