Alan W. Irwin wrote: > I am in the process of emulating the autotools STDC_HEADERS macro which > does > the following: > > # Specifically, this macro checks for stdlib.h', stdarg.h', > # string.h', and float.h'; if the system has those, it probably > # has the rest of the ANSI C header files. This macro also checks > # whether string.h' declares memchr' (and thus presumably the > # other mem' functions), whether stdlib.h' declare free' (and > # thus presumably malloc' and other related functions), and whether > # the ctype.h' macros work on characters with the high bit set, as > # ANSI C requires. > > I want to store the result of the tests in one cached variable, > STDC_HEADERS. So far, I am using CHECK_INCLUDE_FILES, and a couple of > instances of CHECK_PROTOTYPE_EXISTS (taken from the KDE > CheckPrototypeExists.cmake since apparently cmake does not have this module > yet). Is there a way to re-use STDC_HEADERS for these different tests > or do > I have to pollute the cache with a bunch of different variables > (STDC_HEADERS1, STDC_HEADERS2,....) from all the required tests and store > the AND of them as STDC_HEADERS?
You don't actually have to use the CMake-provided macros to do the tests one at a time. You could call TRY_COMPILE directly and provide your own source file that includes all four headers. You could also use the CHECK_C_SOURCE_COMPILES macro. -Brad _______________________________________________ CMake mailing list CMake@cmake.org http://www.cmake.org/mailman/listinfo/cmake