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Diffstat (limited to 'share/cmake-3.10/Modules/CheckCXXSymbolExists.cmake')
-rw-r--r-- | share/cmake-3.10/Modules/CheckCXXSymbolExists.cmake | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/share/cmake-3.10/Modules/CheckCXXSymbolExists.cmake b/share/cmake-3.10/Modules/CheckCXXSymbolExists.cmake new file mode 100644 index 0000000..8552154 --- /dev/null +++ b/share/cmake-3.10/Modules/CheckCXXSymbolExists.cmake @@ -0,0 +1,39 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#.rst: +# CheckCXXSymbolExists +# -------------------- +# +# Check if a symbol exists as a function, variable, or macro in C++ +# +# CHECK_CXX_SYMBOL_EXISTS(<symbol> <files> <variable>) +# +# Check that the <symbol> is available after including given header +# <files> and store the result in a <variable>. Specify the list of +# files in one argument as a semicolon-separated list. +# CHECK_CXX_SYMBOL_EXISTS() can be used to check in C++ files, as +# opposed to CHECK_SYMBOL_EXISTS(), which works only for C. +# +# If the header files define the symbol as a macro it is considered +# available and assumed to work. If the header files declare the symbol +# as a function or variable then the symbol must also be available for +# linking. If the symbol is a type or enum value it will not be +# recognized (consider using CheckTypeSize or CheckCSourceCompiles). +# +# 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 +# CMAKE_REQUIRED_LIBRARIES = list of libraries to link +# CMAKE_REQUIRED_QUIET = execute quietly without messages + +include(CheckSymbolExists) + +macro(CHECK_CXX_SYMBOL_EXISTS SYMBOL FILES VARIABLE) + __CHECK_SYMBOL_EXISTS_IMPL("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.cxx" "${SYMBOL}" "${FILES}" "${VARIABLE}" ) +endmacro() |