mesa: Optionally build a dricore support library (v3)
This an adds --enable-shared-dricore option to configure. When enabled,
DRI modules will link against a shared copy of the common mesa routines
rather than statically linking these.
This saves about 30MB on disc with a full complement of classic DRI
drivers.
v2: Only enable with a gcc-compatible compiler that handles rpath
Handle DRI_CFLAGS without filter-out magic
Build shared libraries with the full mklib voodoo
Fix typos
v3: Resolve conflicts with talloc removal patches
Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
diff --git a/configure.ac b/configure.ac
index 3bf9c68..46d3516 100644
--- a/configure.ac
+++ b/configure.ac
@@ -151,9 +151,13 @@
# Enable -fvisibility=hidden if using a gcc that supports it
save_CFLAGS="$CFLAGS"
AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])
- CFLAGS="$CFLAGS -fvisibility=hidden"
+ VISIBILITY_CFLAGS="-fvisibility=hidden"
+ CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
- [CFLAGS="$save_CFLAGS" ; AC_MSG_RESULT([no])]);
+ [VISIBILITY_CFLAGS=""; AC_MSG_RESULT([no])]);
+
+ # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
+ CFLAGS=$save_CFLAGS
# Work around aliasing bugs - developers should comment this out
CFLAGS="$CFLAGS -fno-strict-aliasing"
@@ -164,14 +168,21 @@
# Enable -fvisibility=hidden if using a gcc that supports it
save_CXXFLAGS="$CXXFLAGS"
AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])
- CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
+ VISIBILITY_CXXFLAGS="-fvisibility=hidden"
+ CXXFLAGS="$CXXFLAGS $VISIBILITY_CXXFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
- [CXXFLAGS="$save_CXXFLAGS" ; AC_MSG_RESULT([no])]);
+ [VISIBILITY_CXXFLAGS="" ; AC_MSG_RESULT([no])]);
+
+ # Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.
+ CXXFLAGS=$save_CXXFLAGS
# Work around aliasing bugs - developers should comment this out
CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
fi
+AC_SUBST([VISIBILITY_CFLAGS])
+AC_SUBST([VISIBILITY_CXXFLAGS])
+
dnl These should be unnecessary, but let the user set them if they want
AC_ARG_VAR([OPT_FLAGS], [Additional optimization flags for the compiler.
Default is to use CFLAGS.])
@@ -819,6 +830,41 @@
GLAPI_LIB_DEPS="-lpthread"
AC_SUBST([GLAPI_LIB_DEPS])
+
+dnl Setup default DRI CFLAGS
+DRI_CFLAGS='$(CFLAGS)'
+DRI_CXXFLAGS='$(CXXFLAGS)'
+DRI_LIB_DEPS='$(TOP)/src/mesa/libmesa.a'
+MESA_MODULES='$(TOP)/src/mesa/libmesa.a'
+
+AC_ARG_ENABLE([shared-dricore],
+ [AS_HELP_STRING([--enable-shared-dricore],
+ [link DRI modules with shared core DRI routines @<:@default=disabled@:>@])],
+ [enable_dricore="$enableval"],
+ [enable_dricore=no])
+if test "$mesa_driver" = dri ; then
+ if test "$enable_dricore" = yes ; then
+ if test "$GCC$GXX" != yesyes ; then
+ AC_MSG_WARN([Shared dricore requires GCC-compatible rpath handling. Disabling shared dricore])
+ enable_dricore=no
+ else
+ DRICORE_GLSL_LIBS='$(TOP)/$(LIB_DIR)/libglsl.so'
+ DRICORE_LIBS='$(TOP)/$(LIB_DIR)/libdricore.so'
+ DRICORE_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -lglsl'
+ DRI_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -ldricore -lglsl'
+ DRI_CFLAGS='$(CFLAGS_NOVISIBILITY) -DUSE_DRICORE'
+ DRI_CXXFLAGS='$(CXXFLAGS_NOVISIBILITY) -DUSE_DRICORE'
+ MESA_MODULES='$(DRICORE_LIBS) $(DRICORE_GLSL_LIBS)'
+ fi
+ fi
+fi
+AC_SUBST([DRICORE_LIBS])
+AC_SUBST([DRICORE_GLSL_LIBS])
+AC_SUBST([DRICORE_LIB_DEPS])
+AC_SUBST([DRI_CXXFLAGS])
+AC_SUBST([DRI_CFLAGS])
+AC_SUBST([MESA_MODULES])
+
AC_SUBST([HAVE_XF86VIDMODE])
PKG_CHECK_MODULES([LIBDRM_RADEON],
@@ -989,8 +1035,8 @@
[AC_MSG_ERROR([Expat required for DRI.])])
fi
- # put all the necessary libs together
- DRI_LIB_DEPS="$SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIB -lm -lpthread $DLOPEN_LIBS"
+ # put all the necessary libs together, including possibly libdricore
+ DRI_LIB_DEPS="$DRI_LIB_DEPS $SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIB -lm -lpthread $DLOPEN_LIBS"
fi
AC_SUBST([DRI_DIRS])
AC_SUBST([EXPAT_INCLUDES])
@@ -1794,6 +1840,7 @@
fi
echo " DRI driver dir: $DRI_DRIVER_INSTALL_DIR"
echo " Use XCB: $enable_xcb"
+ echo " Shared dricore: $enable_dricore"
fi
fi
echo ""