CMake/Modules/Platform/Linux.cmake

61 lines
2.9 KiB
CMake

# GCC is the default compiler on Linux.
SET(CMAKE_DL_LIBS "dl")
SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")
SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared")
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-rdynamic")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
SET(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")
SET(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG "-Wl,-soname,")
SET(CMAKE_SHARED_LIBRARY_SONAME_Fortran_FLAG "-Wl,-soname,")
SET(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic")
SET(CMAKE_EXE_EXPORTS_CXX_FLAG "-Wl,--export-dynamic")
# Initialize C link type selection flags. These flags are used when
# building a shared library, shared module, or executable that links
# to other libraries to select whether to use the static or shared
# versions of the libraries.
FOREACH(type SHARED_LIBRARY SHARED_MODULE EXE)
SET(CMAKE_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic")
SET(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic")
ENDFOREACH(type)
# Debian policy requires that shared libraries be installed without
# executable permission. Fedora policy requires that shared libraries
# be installed with the executable permission. Since the native tools
# create shared libraries with execute permission in the first place a
# reasonable policy seems to be to install with execute permission by
# default. In order to support debian packages we provide an option
# here. The option default is based on the current distribution, but
# packagers can set it explicitly on the command line.
IF(DEFINED CMAKE_INSTALL_SO_NO_EXE)
# Store the decision variable in the cache. This preserves any
# setting the user provides on the command line.
SET(CMAKE_INSTALL_SO_NO_EXE "${CMAKE_INSTALL_SO_NO_EXE}" CACHE INTERNAL
"Install .so files without execute permission.")
ELSE(DEFINED CMAKE_INSTALL_SO_NO_EXE)
# Detect the linux distribution.
SET(CMAKE_LINUX_DISTRO)
IF(EXISTS "/proc/version")
FILE(READ "/proc/version" CMAKE_LINUX_DISTRO)
ENDIF(EXISTS "/proc/version")
# List the distributions that require shared libraries to not have
# execute permission.
SET(CMAKE_INSTALL_SO_NO_EXE_DISTRO "(Debian|Ubuntu)")
# Store the decision variable as an internal cache entry to avoid
# checking the platform every time. This option is advanced enough
# that only package maintainers should need to adjust it. They are
# capable of providing a setting on the command line.
IF("${CMAKE_LINUX_DISTRO}" MATCHES "${CMAKE_INSTALL_SO_NO_EXE_DISTRO}")
SET(CMAKE_INSTALL_SO_NO_EXE 1 CACHE INTERNAL
"Install .so files without execute permission.")
ELSE("${CMAKE_LINUX_DISTRO}" MATCHES "${CMAKE_INSTALL_SO_NO_EXE_DISTRO}")
SET(CMAKE_INSTALL_SO_NO_EXE 0 CACHE INTERNAL
"Install .so files without execute permission.")
ENDIF("${CMAKE_LINUX_DISTRO}" MATCHES "${CMAKE_INSTALL_SO_NO_EXE_DISTRO}")
ENDIF(DEFINED CMAKE_INSTALL_SO_NO_EXE)
INCLUDE(Platform/UnixPaths)