CMake/Modules/Platform/OpenBSD.cmake
Peter Wu 95bd6317bc RPATH: Record support for $ORIGIN on various *BSD
All of NetBSD, FreeBSD, OpenBSD and DragonFly BSD support `$ORIGIN`,
but the last two require `-z origin` as documented at

    https://lekensteyn.nl/rpath.html

The `-z origin` option causes a flag bit to be set and has no effect if
the `RPATH` does not contain expandable tokens.
2018-10-26 09:27:29 -04:00

44 lines
1.4 KiB
CMake

include(Platform/NetBSD)
# On OpenBSD, the compile time linker does not share it's configuration with
# the runtime linker. This will extract the library search paths from the
# system's ld.so.hints file which will allow CMake to set the appropriate
# -rpath-link flags
if(NOT CMAKE_PLATFORM_RUNTIME_PATH)
execute_process(COMMAND /sbin/ldconfig -r
OUTPUT_VARIABLE LDCONFIG_HINTS
ERROR_QUIET)
string(REGEX REPLACE ".*search\\ directories:\\ ([^\n]*).*" "\\1"
LDCONFIG_HINTS "${LDCONFIG_HINTS}")
string(REPLACE ":" ";"
CMAKE_PLATFORM_RUNTIME_PATH
"${LDCONFIG_HINTS}")
endif()
# OpenBSD requires -z origin to enable $ORIGIN expansion in RPATH.
# This is not required for NetBSD.
set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-z,origin,-rpath,")
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_OPENBSD_VERSIONING 1)
# OpenBSD has no multilib
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS FALSE)
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE)
# OpenBSD policy requires that shared libraries be installed without
# executable permission.
set(CMAKE_INSTALL_SO_NO_EXE 1)
if($ENV{LOCALBASE})
set(OPENBSD_LOCALBASE $ENV{LOCALBASE})
else()
set(OPENBSD_LOCALBASE /usr/local)
endif()
if($ENV{X11BASE})
set(OPENBSD_X11BASE $ENV{X11BASE})
else()
set(OPENBSD_X11BASE /usr/X11R6)
endif()
list(APPEND CMAKE_SYSTEM_PREFIX_PATH ${OPENBSD_LOCALBASE})