[CMake] AC_C_RESTRICT
Hi, I am searching for something appropriate to the autoconf AC_C_RESTRICT macro. Kornel signature.asc Description: This is a digitally signed message part. -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] AC_C_RESTRICT
On 1/4/2013 6:50 AM, Kornel Benko wrote: Hi, I am searching for something appropriate to the autoconf AC_C_RESTRICT macro. Kornel What does it do? -Bill -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] AC_C_RESTRICT
On 4 January 2013 14:12, Bill Hoffman bill.hoff...@kitware.com wrote: On 1/4/2013 6:50 AM, Kornel Benko wrote: Hi, I am searching for something appropriate to the autoconf AC_C_RESTRICT macro. Kornel What does it do? Bill, It tests if C compiler supports C99 restrict keyword, perhaps also implementation-specific form, e.g. __restrict, etc. [1] http://en.wikipedia.org/wiki/Restrict Best regards, -- Mateusz Loskot, http://mateusz.loskot.net -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] AC_C_RESTRICT
On 1/4/2013 9:24 AM, Mateusz Loskot wrote: Bill, It tests if C compiler supports C99 restrict keyword, perhaps also implementation-specific form, e.g. __restrict, etc. [1]http://en.wikipedia.org/wiki/Restrict Should be able to do it with a CheckCSourceCompiles: http://www.cmake.org/cmake/help/v2.8.10/cmake.html#module:CheckCSourceCompiles -Bill -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] AC_C_RESTRICT
On 4 January 2013 14:46, Bill Hoffman bill.hoff...@kitware.com wrote:
On 1/4/2013 9:24 AM, Mateusz Loskot wrote:
It tests if C compiler supports C99 restrict keyword,
perhaps also implementation-specific form, e.g. __restrict, etc.
[1]http://en.wikipedia.org/wiki/Restrict
Should be able to do it with a CheckCSourceCompiles:
http://www.cmake.org/cmake/help/v2.8.10/cmake.html#module:CheckCSourceCompiles
Yup:
CHECK_C_SOURCE_COMPILES (
int test (void *restrict x); int main (void) {return 0;}
HAVE_RESTRICT)
Lots of examples available:
https://github.com/pjanouch/aapng/blob/master/CMakeLists.txt
https://bitbucket.org/poulson/clique/src/ca43759adbe4/external/elemental/CMakeLists.txt
Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
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Re: [CMake] AC_C_RESTRICT
Am Freitag, 4. Januar 2013 um 14:59:23, schrieb Mateusz Loskot
mate...@loskot.net
On 4 January 2013 14:46, Bill Hoffman bill.hoff...@kitware.com wrote:
On 1/4/2013 9:24 AM, Mateusz Loskot wrote:
It tests if C compiler supports C99 restrict keyword,
perhaps also implementation-specific form, e.g. __restrict, etc.
[1]http://en.wikipedia.org/wiki/Restrict
Should be able to do it with a CheckCSourceCompiles:
http://www.cmake.org/cmake/help/v2.8.10/cmake.html#module:CheckCSourceCompiles
Yup:
CHECK_C_SOURCE_COMPILES (
int test (void *restrict x); int main (void) {return 0;}
HAVE_RESTRICT)
I implemented it now this way (used the autoconf macro as guide :
# Check for restrict keyword
# Builds the macro A_C_RESTRICT form automake
foreach(ac_kw __restrict __restrict__ _Restrict restrict)
check_cxx_source_compiles(
typedef int * int_ptr;
int foo (int_ptr ${ac_kw} ip) {
return ip[0];
}
int main(){
int s[1];
int * ${ac_kw} t = s;
t[0] = 0;
return foo(t);
}
RESTRICT)
if(RESTRICT)
set(ac_cv_c_restrict ${ac_kw})
break()
endif()
endforeach()
if(RESTRICT)
add_definitions(-Drestrict=${ac_cv_c_restrict})
else()
add_definitions(-Drestrict=)
endif()
Thanks to all replies.
Kornel
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