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Add -fPIC for builds except for 32-bit x86 and Windows

pull/280/head
Jeffrey Walton 2016-09-14 01:15:18 -04:00
parent 9280850b26
commit 1204d3dfcc
1 changed files with 21 additions and 4 deletions
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25
CMakeLists.txt
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@ -36,10 +36,27 @@ set(CRYPTOPP_DATA_DIR "" CACHE PATH "Crypto++ test data directory")
# Stop hiding the damn output...
set(CMAKE_VERBOSE_MAKEFILE on)
# Enable PIC for all targets except 32-bit x86
#if (CMAKE_SYSTEM_PROCESSOR)
# set (CMAKE_CXX_FLAGS "$CMAKE_CXX_FLAGS -fPIC")
#endif()
# Enable PIC for all targets except Windows and 32-bit x86.
# Avoid on 32-bit x86 due to register pressures.
if (NOT (WINDOWS OR WINDOWS_STORE OR WINDOWS_PHONE))
set (UNAME_CMD "uname")
set (UNAME_ARG "-m")
execute_process(COMMAND ${UNAME_CMD} ${UNAME_ARG}
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
RESULT_VARIABLE UNAME_RESULT
OUTPUT_VARIABLE UNAME_MACHINE)
# Use Regex; match i386, i486, i586 and i686
if (NOT (${UNAME_MACHINE} MATCHES "i.86"))
# message(STATUS "Setting -fPIC for machine ${UNAME_MACHINE}")
if (CMAKE_VERSION VERSION_LESS 2.8.12)
add_definitions(-fPIC)
else()
add_compile_options(-fPIC)
endif()
endif()
endif()
# Don't use RPATH's. The resulting binary could fail a security audit.
if (NOT CMAKE_VERSION VERSION_LESS 2.8.12)