diff options
author | Hector Martin | 2009-08-24 17:59:35 +0200 |
---|---|---|
committer | Hector Martin | 2009-08-24 17:59:35 +0200 |
commit | ec63619f611c7246247485ae3d27818aa2aa1dbd (patch) | |
tree | 2e9f404deb24c15dbe44bc87f28065b6008ee099 /Modules/CheckConstantExists.cmake | |
parent | 0a1fe2abddbd73ed00a93afd8dcaf38f5210c0fc (diff) | |
download | usbmuxd-ec63619f611c7246247485ae3d27818aa2aa1dbd.tar.gz usbmuxd-ec63619f611c7246247485ae3d27818aa2aa1dbd.tar.bz2 |
ZLP flag is an enum, move check into CMake.
Now prints the big fat warning at configure time
Diffstat (limited to 'Modules/CheckConstantExists.cmake')
-rw-r--r-- | Modules/CheckConstantExists.cmake | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Modules/CheckConstantExists.cmake b/Modules/CheckConstantExists.cmake new file mode 100644 index 0000000..3d6d97e --- /dev/null +++ b/Modules/CheckConstantExists.cmake @@ -0,0 +1,38 @@ +# - Check if the given constant exists (as an enum, define, or whatever) +# CHECK_CONSTANT_EXISTS (CONSTANT HEADER VARIABLE) +# +# CONSTANT - the name of the constant you are interested in +# HEADER - the header(s) where the prototype should be declared +# VARIABLE - variable to store the result +# +# The following variables may be set before calling this macro to +# modify the way the check is run: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# +# Example: CHECK_CONSTANT_EXISTS(O_NOFOLLOW fcntl.h HAVE_O_NOFOLLOW) + + +INCLUDE(CheckCSourceCompiles) + +MACRO (CHECK_CONSTANT_EXISTS _CONSTANT _HEADER _RESULT) + SET(_INCLUDE_FILES) + FOREACH (it ${_HEADER}) + SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n") + ENDFOREACH (it) + + SET(_CHECK_CONSTANT_SOURCE_CODE " +${_INCLUDE_FILES} +void cmakeRequireConstant(int dummy,...){(void)dummy;} +int main() +{ + cmakeRequireConstant(0,${_CONSTANT}); + return 0; +} +") + CHECK_C_SOURCE_COMPILES("${_CHECK_CONSTANT_SOURCE_CODE}" ${_RESULT}) + +ENDMACRO (CHECK_CONSTANT_EXISTS) + |