Mesa (master): egl: Do not export private symbols

[Chad Versace]

Module: Mesa
Branch: master
Commit: 2c2e64edaba0f6aeb181ca5b51eb8dea8e9b39f9
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2c2e64edaba0f6aeb181ca5b51eb8dea8e9b39f9

Author: Chad Versace <chad.versace at linux.intel.com>
Date:   Thu Aug  1 08:10:31 2013 -0700

egl: Do not export private symbols

libEGL was incorrectly exporting *all* symbols, public and private.
This patch adds -fvisibility=hidden to libEGL's linker flags to ensure
that only symbols annotated with __attribute__((visibility("default")))
get exported.

Sanity-checked with libEGL's builtin DRI2 driver and the i965 DRI driver
by running Piglit on X/EGL and by running weston-gears on Weston as an
X client.

Sanity-checked with libEGL's Gallium driver (which is not built-in) and
the swrast Gallium driver by running es2gears_x11.

Kristian reviewed the symbol diff in `nm libEGL.so`.

CC: "9.2" <mesa-stable at lists.freedesktop.org>
CC: Ian Romanick <idr at freedesktop.org>
Acked-by: Kristian Høgsberg <krh at bitplanet.net>
Reviewed-by: Jakob Bornecrantz <jakob at vmware.com>
Signed-off-by: Chad Versace <chad.versace at linux.intel.com>

---

 src/egl/drivers/dri2/Makefile.am        |    1 +
 src/egl/drivers/glx/Makefile.am         |    1 +
 src/egl/main/Makefile.am                |    1 +
 src/egl/wayland/wayland-drm/Makefile.am |    1 +
 src/egl/wayland/wayland-egl/Makefile.am |    1 +
 5 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/egl/drivers/dri2/Makefile.am b/src/egl/drivers/dri2/Makefile.am
index 45f7dfa..823ef5e 100644
--- a/src/egl/drivers/dri2/Makefile.am
+++ b/src/egl/drivers/dri2/Makefile.am
@@ -28,6 +28,7 @@ AM_CFLAGS = \
 	-I$(top_srcdir)/src/egl/wayland/wayland-drm \
 	-I$(top_builddir)/src/egl/wayland/wayland-drm \
 	$(DEFINES) \
+	$(VISIBILITY_CFLAGS) \
 	$(LIBDRM_CFLAGS) \
 	$(LIBUDEV_CFLAGS) \
 	$(LIBKMS_CFLAGS) \
diff --git a/src/egl/drivers/glx/Makefile.am b/src/egl/drivers/glx/Makefile.am
index 6bf67ea..6db95b4 100644
--- a/src/egl/drivers/glx/Makefile.am
+++ b/src/egl/drivers/glx/Makefile.am
@@ -22,6 +22,7 @@
 AM_CFLAGS = \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/src/egl/main \
+	$(VISIBILITY_CFLAGS) \
 	$(X11_CFLAGS) \
 	$(DEFINES)
 
diff --git a/src/egl/main/Makefile.am b/src/egl/main/Makefile.am
index 1cfdce2..2e43860 100644
--- a/src/egl/main/Makefile.am
+++ b/src/egl/main/Makefile.am
@@ -27,6 +27,7 @@ AM_CFLAGS = \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/src/gbm/main \
 	$(DEFINES) \
+	$(VISIBILITY_CFLAGS) \
 	$(EGL_CFLAGS) \
 	-D_EGL_NATIVE_PLATFORM=$(EGL_NATIVE_PLATFORM) \
 	-D_EGL_DRIVER_SEARCH_DIR=\"$(EGL_DRIVER_INSTALL_DIR)\" \
diff --git a/src/egl/wayland/wayland-drm/Makefile.am b/src/egl/wayland/wayland-drm/Makefile.am
index 4b2aeb3..08ee497 100644
--- a/src/egl/wayland/wayland-drm/Makefile.am
+++ b/src/egl/wayland/wayland-drm/Makefile.am
@@ -1,6 +1,7 @@
 AM_CFLAGS = -I$(top_srcdir)/src/egl/main \
 	    -I$(top_srcdir)/include \
 	    $(DEFINES) \
+	    $(VISIBILITY_CFLAGS) \
 	    $(WAYLAND_CFLAGS) 
 
 noinst_LTLIBRARIES = libwayland-drm.la
diff --git a/src/egl/wayland/wayland-egl/Makefile.am b/src/egl/wayland/wayland-egl/Makefile.am
index 7d20a1a..138c170 100644
--- a/src/egl/wayland/wayland-egl/Makefile.am
+++ b/src/egl/wayland/wayland-egl/Makefile.am
@@ -2,6 +2,7 @@ pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = wayland-egl.pc
 
 AM_CFLAGS = $(DEFINES) \
+	    $(VISIBILITY_CFLAGS) \
 	    $(WAYLAND_CFLAGS)
 
 lib_LTLIBRARIES = libwayland-egl.la