do not compile with -O3 when using GCC 4.1.x as this version segfaults while optimizing

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1367 0778d3d1-df1d-0410-868b-ea421aaaa00d

ChangeLog

@@ -1,3 +1,20 @@
+2008-07-23	Tobias Doerffel	<tobydox/at/users/dot/sourceforge/dot/net>
+
+	* plugins/ladspa_effect/caps/CMakeLists.txt:
+	do not compile with -O3 when using GCC 4.1.x as this version segfaults
+	while optimizing
+
+	* plugins/spectrum_analyzer/spectrum_analyzer.cpp:
+	* include/effect_lib.h:
+	fixed compiler-warnings
+
+	* src/core/midi/midi_winmm.cpp:
+	* src/core/midi/midi_alsa_seq.cpp:
+	fixed subscribe/unsubscribe-warnings
+
+	* CMakeLists.txt:
+	fixes for cmake 2.4
+
 2008-07-22	Tobias Doerffel	<tobydox/at/users/dot/sourceforge/dot/net>
 
 	* cmake/modules/BuildPlugin.cmake:

plugins/ladspa_effect/caps/CMakeLists.txt

@@ -1,9 +1,18 @@
 INCLUDE_DIRECTORIES("${CMAKE_SOURCE_DIR}/include")
-#SET(CMAKE_BUILD_TYPE release)
 FILE(GLOB SOURCES *.cc)
 ADD_LIBRARY(caps SHARED ${SOURCES})
 SET_TARGET_PROPERTIES(caps PROPERTIES PREFIX "")
-SET_TARGET_PROPERTIES(caps PROPERTIES COMPILE_FLAGS "-O3 -Wno-write-strings")
+EXEC_PROGRAM(${CMAKE_C_COMPILER} ARGS --version OUTPUT_VARIABLE _gcc_version_info)
+STRING(REGEX MATCH "4\\.1\\.[0-9]" _gcc_is_4_1_x "${_gcc_version_info}")
+STRING(LENGTH "${_gcc_is_4_1_x}" NO_O3)
+IF(NO_O3)
+	MESSAGE("Found GCC 4.1.x - compiling CAPS-plugins with -O2 instead of -O3")
+	SET_TARGET_PROPERTIES(caps PROPERTIES COMPILE_FLAGS "-Wno-write-strings")
+ELSE(NO_O3)
+	SET_TARGET_PROPERTIES(caps PROPERTIES COMPILE_FLAGS "-O3 -Wno-write-strings")
+ENDIF(NO_O3)
+
+
 SET_TARGET_PROPERTIES(caps PROPERTIES LINK_FLAGS "${LINK_FLAGS} -shared -Wl,-no-undefined")
 IF(LMMS_BUILD_LINUX)
 	SET_TARGET_PROPERTIES(caps PROPERTIES LINK_FLAGS "${LINK_FLAGS} -nostartfiles")