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modules/ECMCheckLinkerFlags.cmake
- This file was added.
| 1 | #.rest: | ||||
|---|---|---|---|---|---|
| 2 | # CheckLinkerFlags | ||||
| 3 | # ---------------- | ||||
| 4 | # | ||||
| 5 | # Check support of a given linker flag | ||||
| 6 | # | ||||
| 7 | # ecm_check_linker_flags(flags, result) | ||||
| 8 | # | ||||
| 9 | # * result will be set to TRUE or FALSE if the linker accepts the flags. | ||||
| 10 | # | ||||
| 11 | #============================================================================= | ||||
| 12 | # Copyright 2018 Tobias C. Berner <tcberner@FreeBSD.org> | ||||
| 13 | # | ||||
| 14 | # Redistribution and use in source and binary forms, with or without | ||||
| 15 | # modification, are permitted provided that the following conditions | ||||
| 16 | # are met: | ||||
| 17 | # | ||||
| 18 | # 1. Redistributions of source code must retain the copyright | ||||
| 19 | # notice, this list of conditions and the following disclaimer. | ||||
| 20 | # 2. Redistributions in binary form must reproduce the copyright | ||||
| 21 | # notice, this list of conditions and the following disclaimer in the | ||||
| 22 | # documentation and/or other materials provided with the distribution. | ||||
| 23 | # | ||||
| 24 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||||
| 25 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||||
| 26 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||||
| 27 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||||
| 28 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||||
| 29 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||||
| 30 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||||
| 31 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||||
| 32 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||||
| 33 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||||
| 34 | #============================================================================= | ||||
| 35 | | ||||
| 36 | function(ecm_check_linker_flags linker_flags result) | ||||
| 37 | cmake_policy(SET CMP0056 NEW) | ||||
| 38 | set(CMAKE_EXE_LINKER_FLAGS "${linker_flags}") | ||||
| 39 | set(TEST_PROGRAM "int main() { return 0 ; }") | ||||
| 40 | set(TEST_FILE "${CMAKE_CURRENT_BINARY_DIR}/test_linker_flags.cc") | ||||
| 41 | file(WRITE "${TEST_FILE}" "${TEST_PROGRAM}") | ||||
| 42 | message(STATUS "Checking whether the linker supports '${linker_flags}' ...") | ||||
| 43 | try_compile(SUPPORTED | ||||
| 44 | "${CMAKE_CURRENT_BINARY_DIR}/test_linker_flags" | ||||
| 45 | "${TEST_FILE}" | ||||
| 46 | ) | ||||
| 47 | message(STATUS " supports '${linker_flags}': ${SUPPORTED}") | ||||
| 48 | if(SUPPORTED) | ||||
| 49 | set(${result} TRUE) | ||||
| 50 | else() | ||||
| 51 | set(${result} FALSE) | ||||
| 52 | endif() | ||||
| 53 | endfunction() | ||||