diff options
| author | Brad King <brad.king@kitware.com> | 2016-12-01 20:46:34 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2016-12-06 13:58:42 (GMT) |
| commit | f72ba42b7c643b1b217d1b8f6684cec3289e7201 (patch) | |
| tree | 7277ccca7c933e26b2cfc4aba2401477d7125408 /Tests/RunCMake/try_compile/CStandardGNU.cmake | |
| parent | 45aa03b97aeeb512264ac2bfbb2028330be254d1 (diff) | |
| download | CMake-f72ba42b7c643b1b217d1b8f6684cec3289e7201.zip CMake-f72ba42b7c643b1b217d1b8f6684cec3289e7201.tar.gz CMake-f72ba42b7c643b1b217d1b8f6684cec3289e7201.tar.bz2 | |
try_compile: Add policy CMP0067 to honor language standards
Projects use `try_compile` to check if they will be able to compile some
particular source code. When a language standard variable like
`CMAKE_CXX_STANDARD` is set, then the project intends to compile source
code using a compiler mode for that standard. Therefore it makes sense
for `try_compile` to use that standard in the test project too.
Unfortunately this was not done when support for the
`CMAKE_CXX_STANDARD` variable was first implemented. Add a policy to
introduce the improved behavior in a compatible way.
Closes: #16456
Diffstat (limited to 'Tests/RunCMake/try_compile/CStandardGNU.cmake')
| -rw-r--r-- | Tests/RunCMake/try_compile/CStandardGNU.cmake | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Tests/RunCMake/try_compile/CStandardGNU.cmake b/Tests/RunCMake/try_compile/CStandardGNU.cmake index 29ce315..79ae874 100644 --- a/Tests/RunCMake/try_compile/CStandardGNU.cmake +++ b/Tests/RunCMake/try_compile/CStandardGNU.cmake @@ -9,3 +9,15 @@ try_compile(result ${CMAKE_CURRENT_BINARY_DIR} if(NOT result) message(FATAL_ERROR "try_compile failed:\n${out}") endif() + +cmake_policy(SET CMP0067 NEW) +set(CMAKE_C_STANDARD 99) +set(CMAKE_C_STANDARD_REQUIRED 1) +set(CMAKE_C_EXTENSIONS 0) +try_compile(result ${CMAKE_CURRENT_BINARY_DIR} + SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/CStandardGNU.c + OUTPUT_VARIABLE out + ) +if(NOT result) + message(FATAL_ERROR "try_compile failed:\n${out}") +endif() |