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cmake: hopefully fix relocation R_X86_64_32 errors with static builds

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This commit is contained in:
Hugues Delorme 2016-12-30 16:41:25 +01:00
parent 469a525fc8
commit fcdc4bf6b3
1 changed files with 15 additions and 4 deletions
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19
CMakeLists.txt
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@ -28,6 +28,7 @@
#############################################################################
cmake_minimum_required(VERSION 2.8)
cmake_policy(SET CMP0018 NEW)
include(CheckIncludeFiles)
include(CheckFunctionExists)
@ -122,10 +123,23 @@ message(STATUS "GMIO_TARGET_ARCH_BIT_SIZE = ${GMIO_TARGET_ARCH_BIT_SIZE}")
include(TestBigEndian)
test_big_endian(GMIO_HOST_IS_BIG_ENDIAN)
# Adapt C compiler flags to enable strict ISO C99 conformance
# Adapt C compiler flags for GCC
if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
# Enable strict ISO C99 conformance
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -pedantic-errors")
add_definitions(-D_POSIX_SOURCE)
# cmake < v2.8.9 does not support CMAKE_POSITION_INDEPENDENT_CODE
# For this project, gcc needs -fPIC option on x86_64 UNIX platform
if(NOT (WIN32 OR CYGWIN)
AND (CMAKE_VERSION VERSION_LESS 2.8.9)
AND (${CMAKE_SYSTEM_PROCESSOR} MATCHES "i.86")
AND (GMIO_TARGET_ARCH_BIT_SIZE EQUAL 64))
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_SHARED_LIBRARY_C_FLAGS}")
endif()
# Force PIC
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_C_FLAGS}")
@ -287,9 +301,6 @@ if(CMAKE_C_COMPILER_IS_GCC_COMPATIBLE)
if (NOT GMIO_GCC_DOESNT_WARN_UNIVERSAL_0_INITIALIZER)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-missing-braces -Wno-missing-field-initializers")
endif()
# Force PIC for GCC
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()
# Specific flags for Clang