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Support gcc 4.0.

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gcc 4.0 doesn't understand -Werror=...
This commit is contained in:
Felix Geyer 2012-05-21 20:33:33 +02:00
parent fa79da37b6
commit 3bc3bfb15e
1 changed files with 13 additions and 5 deletions
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18
CMakeLists.txt
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@ -19,6 +19,10 @@ cmake_minimum_required(VERSION 2.6.4)
set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake )
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckCXXSourceCompiles)
option(WITH_TESTS "Enable building of unit tests" ON)
option(WITH_GUI_TESTS "Enable building of GUI tests" OFF)
option(WITH_LTO "Enable Link Time Optimization (LTO)" OFF)
@ -56,11 +60,18 @@ add_definitions(-DQT_NO_KEYWORDS -DQT_NO_EXCEPTIONS -DQT_NO_STL -DQT_STRICT_ITER
add_gcc_compiler_flags("-ansi -fno-common -fstack-protector -D_FORTIFY_SOURCE=2")
add_gcc_compiler_flags("-Wall -Wextra -Wundef -Wpointer-arith -Wno-long-long")
add_gcc_compiler_flags("-Wformat=2 -Werror=format-security -Wmissing-format-attribute")
add_gcc_compiler_flags("-Wformat=2 -Wmissing-format-attribute")
add_gcc_compiler_cxxflags("-fno-exceptions -fno-rtti")
add_gcc_compiler_cxxflags("-Wnon-virtual-dtor -Wold-style-cast -Woverloaded-virtual")
add_gcc_compiler_cflags("-Wchar-subscripts -Wwrite-strings -Werror=implicit-function-declaration")
add_gcc_compiler_cflags("-Wchar-subscripts -Wwrite-strings")
check_c_compiler_flag("-Werror=format-security -Werror=implicit-function-declaration" WERROR_C_AVAILABLE)
check_cxx_compiler_flag("-Werror=format-security" WERROR_CXX_AVAILABLE)
if(WERROR_C_AVAILABLE AND WERROR_CXX_AVAILABLE)
add_gcc_compiler_flags("-Werror=format-security")
add_gcc_compiler_cflags("-Werror=implicit-function-declaration")
endif()
if(CMAKE_COMPILER_IS_CLANGXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mllvm -stack-protector-buffer-size=4")
@ -80,8 +91,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
if(WITH_LTO)
include(CheckCXXCompilerFlag)
if(CMAKE_COMPILER_IS_GNUCC and CMAKE_COMPILER_IS_GNUCXX)
check_cxx_compiler_flag("-flto -fuse-linker-plugin" LTO_AVAILABLE)
@ -143,7 +152,6 @@ find_package(Gcrypt REQUIRED)
find_package(ZLIB REQUIRED)
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("
#include <zlib.h>