Add a BUILD_STATIC option which links statically against libgcc and libstdc++ (if applicable.) Remove the corresponding code from build-xorg.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4608 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef34705..e67feb4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,6 +107,44 @@
message(STATUS "32-bit build")
endif()
+# This ensures that we don't depend on libstdc++ or libgcc
+if(CMAKE_COMPILER_IS_GNUCXX AND NOT APPLE AND NOT CYGWIN)
+ option(BUILD_STATIC
+ "Link statically against libgcc and libstdc++, if possible" OFF)
+ if(BUILD_STATIC)
+ # For some reason, simply passing ${CMAKE_CXX_FLAGS} to the compiler in
+ # execute_process() doesn't work. Grrr...
+ if(64BIT)
+ execute_process(COMMAND ${CMAKE_CXX_COMPILER} -m64
+ --print-file-name=libstdc++.a OUTPUT_VARIABLE LIBSTDCPLUSPLUS
+ RESULT_VARIABLE RESULT)
+ else()
+ execute_process(COMMAND ${CMAKE_CXX_COMPILER} -m32
+ --print-file-name=libstdc++.a OUTPUT_VARIABLE LIBSTDCPLUSPLUS
+ RESULT_VARIABLE RESULT)
+ endif()
+ string(REGEX REPLACE "\n" "" LIBSTDCPLUSPLUS ${LIBSTDCPLUSPLUS})
+ if(RESULT MATCHES 0 AND LIBSTDCPLUSPLUS)
+ message(STATUS "Linking with static libstdc++:\n ${LIBSTDCPLUSPLUS}")
+ file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/staticlib)
+ execute_process(COMMAND ${CMAKE_COMMAND} -E remove
+ ${CMAKE_BINARY_DIR}/staticlib/libstdc++.a)
+ execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink
+ ${LIBSTDCPLUSPLUS} ${CMAKE_BINARY_DIR}/staticlib/libstdc++.a)
+ set(CMAKE_EXE_LINKER_FLAGS
+ "${CMAKE_EXE_LINKER_FLAGS} -L${CMAKE_BINARY_DIR}/staticlib")
+ set(CMAKE_SHARED_LINKER_FLAGS
+ "${CMAKE_SHARED_LINKER_FLAGS} -L${CMAKE_BINARY_DIR}/staticlib")
+ else()
+ message(WARNING Cannot find static libstdc++. VirtualGL will depend on dynamic libstdc++.)
+ endif()
+ add_definitions(-static-libgcc)
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc")
+ set(CMAKE_SHARED_LINKER_FLAGS
+ "${CMAKE_SHARED_LINKER_FLAGS} -static-libgcc")
+ endif()
+endif()
+
# CMake doesn't properly support resource compilation with MinGW. Boo!
if(MINGW)
if(NOT DEFINED RC)