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| author | Brad King <brad.king@kitware.com> | 2010-12-16 18:34:54 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2010-12-16 18:34:54 (GMT) |
| commit | b3efdb58d5436276b65f1dad396265a6cc742910 (patch) | |
| tree | 318bdadef0dd4a239c04779febf661ebd7b26660 | |
| parent | aadee46c60953f7e3d3715bb8847dfa6b8bf64fb (diff) | |
| download | CMake-b3efdb58d5436276b65f1dad396265a6cc742910.zip CMake-b3efdb58d5436276b65f1dad396265a6cc742910.tar.gz CMake-b3efdb58d5436276b65f1dad396265a6cc742910.tar.bz2 | |
CheckCCompilerFlag: Strict signature of 'main' (#11615)
Use "int main(void)" instead of just "int main()" so that compiling with
"gcc -Werror=strict-prototypes" works. Test this check using the flags
"-Werror -Wstrict-prototypes" to work with old GCC versions.
| -rw-r--r-- | Modules/CheckCCompilerFlag.cmake | 2 | ||||
| -rw-r--r-- | Tests/TryCompile/CMakeLists.txt | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/Modules/CheckCCompilerFlag.cmake b/Modules/CheckCCompilerFlag.cmake index cf519b1..a03b64d 100644 --- a/Modules/CheckCCompilerFlag.cmake +++ b/Modules/CheckCCompilerFlag.cmake @@ -25,7 +25,7 @@ INCLUDE(CheckCSourceCompiles) MACRO (CHECK_C_COMPILER_FLAG _FLAG _RESULT) SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}") SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}") - CHECK_C_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT} + CHECK_C_SOURCE_COMPILES("int main(void) { return 0; }" ${_RESULT} # Some compilers do not fail with a bad flag FAIL_REGEX "unrecognized .*option" # GNU FAIL_REGEX "ignoring unknown option" # MSVC diff --git a/Tests/TryCompile/CMakeLists.txt b/Tests/TryCompile/CMakeLists.txt index a57498f..90c2cfc 100644 --- a/Tests/TryCompile/CMakeLists.txt +++ b/Tests/TryCompile/CMakeLists.txt @@ -226,3 +226,9 @@ UNSET(CXX_BOGUS_FLAG CACHE) INCLUDE(CheckCXXCompilerFlag) CHECK_CXX_COMPILER_FLAG(${CXX_DD}-_this_is_not_a_flag_ CXX_BOGUS_FLAG) TEST_FAIL(CXX_BOGUS_FLAG "CHECK_CXX_COMPILER_FLAG() succeeded, but should have failed") + +IF("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU") + UNSET(C_STRICT_PROTOTYPES CACHE) + CHECK_C_COMPILER_FLAG("-Werror;-Wstrict-prototypes" C_STRICT_PROTOTYPES) + TEST_ASSERT(C_STRICT_PROTOTYPES "CHECK_C_COMPILER_FLAG failed -Werror -Wstrict-prototypes") +ENDIF() |