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view Resources/PostgreSQL/CheckTypeAlignment.cmake @ 624:a0c2f38a7dea
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author | Alain Mazy <am@orthanc.team> |
---|---|
date | Wed, 18 Dec 2024 18:52:40 +0100 |
parents | 8c7bb94adff7 |
children |
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macro(CHECK_TYPE_ALIGNMENT TYPE NAME) if(NOT ${NAME}) message(STATUS "Check alignment of ${TYPE}") set(INCLUDE_HEADERS "#include <stddef.h> #include <stdio.h> #include <stdlib.h>") if(HAVE_STDINT_H) set(INCLUDE_HEADERS "${INCLUDE_HEADERS}\n#include <stdint.h>\n") endif(HAVE_STDINT_H) file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_${NAME}_alignment.c" "${INCLUDE_HEADERS} int main(){ char diff; struct foo {char a; ${TYPE} b;}; struct foo *p = (struct foo *) malloc(sizeof(struct foo)); diff = ((char *)&p->b) - ((char *)&p->a); return diff;} ") try_run(${NAME} COMPILE_RESULT "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/" "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/check_${NAME}_alignment.c") message(STATUS "Check alignment of ${TYPE} - ${${NAME}}") endif(NOT ${NAME}) endmacro()