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Diffstat (limited to 'contrib/libarchive/build/cmake/CheckStructMember.cmake')
-rw-r--r-- | contrib/libarchive/build/cmake/CheckStructMember.cmake | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/contrib/libarchive/build/cmake/CheckStructMember.cmake b/contrib/libarchive/build/cmake/CheckStructMember.cmake new file mode 100644 index 0000000..05ddb3a --- /dev/null +++ b/contrib/libarchive/build/cmake/CheckStructMember.cmake @@ -0,0 +1,43 @@ +# - Check if the given struct or class has the specified member variable +# CHECK_STRUCT_MEMBER (STRUCT MEMBER HEADER VARIABLE) +# +# STRUCT - the name of the struct or class you are interested in +# MEMBER - the member which existence you want to check +# 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 + +# Copyright (c) 2006, Alexander Neundorf, <neundorf@kde.org> +# +# Redistribution and use is allowed according to the terms of the BSD license. +# For details see the accompanying COPYING-CMAKE-SCRIPTS file. + + +INCLUDE(CheckCSourceCompiles) + +MACRO (CHECK_STRUCT_MEMBER _STRUCT _MEMBER _HEADER _RESULT) + SET(_INCLUDE_FILES) + FOREACH (it ${_HEADER}) + SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n") + ENDFOREACH (it) + + SET(_CHECK_STRUCT_MEMBER_SOURCE_CODE " +${_INCLUDE_FILES} +int main() +{ + static ${_STRUCT} tmp; + if (sizeof(tmp.${_MEMBER})) + return 0; + return 0; +} +") + CHECK_C_SOURCE_COMPILES("${_CHECK_STRUCT_MEMBER_SOURCE_CODE}" ${_RESULT}) + +ENDMACRO (CHECK_STRUCT_MEMBER) + |