Changeset 8284 for code/branches/kicklib2/cmake/CompilerConfigGCC.cmake

Timestamp:

Apr 21, 2011, 6:58:23 PM (14 years ago)

Author:

rgrieder

Message:

Merged revisions 7978 - 8096 from kicklib to kicklib2.

Location:

code/branches/kicklib2

Files:

• . (modified) (1 prop)
• cmake/CompilerConfigGCC.cmake (modified) (3 diffs)

code/branches/kicklib2/cmake/CompilerConfigGCC.cmake

@@ -26 +26 @@
 INCLUDE(FlagUtilities)
 INCLUDE(CompareVersionStrings)
+INCLUDE(CheckCXXCompilerFlag)
 
 # Shortcut for CMAKE_COMPILER_IS_GNUCXX and ..._GNUC
@@ -36 +37 @@
   OUTPUT_VARIABLE GCC_VERSION
 )
-
-# Complain about incompatibilities
-COMPARE_VERSION_STRINGS("${GCC_VERSION}" "4.4.0" _compare_result)
-IF(NOT _compare_result LESS 0)
-  IF(${Boost_VERSION} LESS 103700)
-    MESSAGE(STATUS "Warning: Boost versions earlier than 1.37 may not compile with GCC 4.4 or later!")
-  ENDIF()
-ENDIF()
 
 # GCC may not support #pragma GCC system_header correctly when using
@@ -72 +65 @@
 
 # CMake doesn't seem to set the PIC flags right on certain 64 bit systems
-IF(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")
+IF(NOT MINGW AND ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")
   ADD_COMPILER_FLAGS("-fPIC" CACHE)
+ENDIF()
+
+# Use SSE if possible
+# Commented because this might not work for cross compiling
+#CHECK_CXX_COMPILER_FLAG(-msse _gcc_have_sse)
+#IF(_gcc_have_sse)
+#  ADD_COMPILER_FLAGS("-msse" CACHE)
+#ENDIF()
+
+IF(NOT MINGW)
+  # Have GCC visibility?
+  CHECK_CXX_COMPILER_FLAG("-fvisibility=hidden" _gcc_have_visibility)
+  IF(_gcc_have_visibility)
+    # Note: There is a possible bug with the flag in gcc < 4.2 and Debug versions
+    COMPARE_VERSION_STRINGS("${GCC_VERSION}" "4.2.0" _compare_result)
+    IF(NOT CMAKE_BUILD_TYPE STREQUAL "Debug" OR _compare_result GREATER -1)
+      ADD_COMPILER_FLAGS("-DORXONOX_GCC_VISIBILITY -fvisibility=default -fvisibility-inlines-hidden" CACHE)
+    ENDIF()
+  ENDIF(_gcc_have_visibility)
 ENDIF()