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#
# Copyright (c) 2010 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# check compiler support of bool and
# possibly get its size and alignment
MACRO(OMPI_CHECK_BOOL)
FOREACH(LANG c cxx)
STRING(TOUPPER ${LANG} LANG_U)
IF(NOT DEFINED SIZEOF_${LANG_U}_BOOL)
MESSAGE( STATUS "Checking size of ${LANG} bool...")
FILE (WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_sizeof_bool.${LANG}"
"#include <stdio.h>
int main() {return sizeof(bool);}
")
TRY_RUN(SIZEOF_${LANG_U}_BOOL COMPILE_RESULT "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_sizeof_bool.${LANG}")
IF(SIZEOF_${LANG_U}_BOOL GREATER 0)
MESSAGE(STATUS "Checking size of ${LANG} bool...${SIZEOF_${LANG_U}_BOOL}")
C_GET_ALIGNMENT(bool ${LANG} BOOL)
SET(OPAL_ALIGNMENT_${LANG_U}_BOOL ${OPAL_ALIGNMENT_BOOL} CACHE INTERNAL "Sizeof ${LANG} bool.")
ELSE(SIZEOF_${LANG_U}_BOOL GREATER 0)
MESSAGE(STATUS "Checking size of ${LANG} bool...failed")
SET(SIZEOF_${LANG_U}_BOOL 1 CACHE INTERNAL "Sizeof ${LANG} bool.")
SET(OPAL_ALIGNMENT_${LANG_U}_BOOL 1 CACHE INTERNAL "Sizeof ${LANG} bool.")
SET(OPAL_NEED_${LANG_U}_BOOL 1 CACHE INTERNAL "true if compiler doesn't support bool.")
ENDIF(SIZEOF_${LANG_U}_BOOL GREATER 0)
ENDIF(NOT DEFINED SIZEOF_${LANG_U}_BOOL)
OMPI_DEF_VAR(OPAL_NEED_${LANG_U}_BOOL
"Define to 1 if the C compiler doesn't support bool\n without any other help (such as <stdbool.h>)." 0 0)
OMPI_DEF_VAR(SIZEOF_${LANG_U}_BOOL "The size of ${LANG} `bool'." 0 1)
OMPI_DEF_VAR(OPAL_ALIGNMENT_${LANG_U}_BOOL "Alignment of ${LANG} `bool'." 0 1)
ENDFOREACH(LANG c cxx)
# Opal defines these without language type....
OMPI_DEF(SIZEOF_BOOL 1 "The size of `bool'." 0 1)
OMPI_DEF(OPAL_ALIGNMENT_BOOL 1 "Sizeof bool." 0 1)
ENDMACRO(OMPI_CHECK_BOOL)
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