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Use the POSITION_INDEPENDENT_CODE target property when available

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This commit is contained in:
Chris Robinson 2014-08-16 20:46:55 -07:00
parent 4a7e04add3
commit 864528bb7b
1 changed files with 12 additions and 7 deletions
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19
CMakeLists.txt
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@ -248,13 +248,15 @@ ELSE()
ADD_DEFINITIONS(-Werror)
ENDIF()
# Force enable PIC if available. The static common library will be linked
# into the dynamic openal library, which requires all its code to be
# position-independent, and CMake doesn't automatically enable PIC for
# static library targets (Windows code is always position-independent).
CHECK_C_COMPILER_FLAG(-fPIC HAVE_FPIC_SWITCH)
IF(HAVE_FPIC_SWITCH AND NOT WIN32)
ADD_DEFINITIONS(-fPIC)
# Force enable -fPIC for CMake versions before 2.8.9 (later versions have
# the POSITION_INDEPENDENT_CODE target property). The static common library
# will be linked into the dynamic openal library, which requires all its
# code to be position-independent.
IF(CMAKE_VERSION VERSION_LESS "2.8.9" AND NOT WIN32)
CHECK_C_COMPILER_FLAG(-fPIC HAVE_FPIC_SWITCH)
IF(HAVE_FPIC_SWITCH)
ADD_DEFINITIONS(-fPIC)
ENDIF()
ENDIF()
# We want RelWithDebInfo to actually include debug stuff (define _DEBUG
@ -1015,6 +1017,9 @@ CONFIGURE_FILE(
# Build a common library with reusable helpers
ADD_LIBRARY(common STATIC ${COMMON_OBJS})
IF(NOT LIBTYPE STREQUAL "STATIC")
SET_PROPERTY(TARGET common PROPERTY POSITION_INDEPENDENT_CODE TRUE)
ENDIF()
# Build main library
ADD_LIBRARY(${LIBNAME} ${LIBTYPE} ${OPENAL_OBJS} ${ALC_OBJS})