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authorAlex Neundorf <neundorf@kde.org>2011-07-08 21:09:32 +0200
committerAlex Neundorf <neundorf@kde.org>2011-07-08 21:09:32 +0200
commit757a6a091c5c9c93e540a76c031552f4b286aeec (patch)
tree666797f6512d5e6df7fd5ac5e6dbc98c707985bb /Modules/CheckCXXSymbolExists.cmake
parent2a97c5d52f14f4e44100619dc9e551869ab77a93 (diff)
downloadcmake-757a6a091c5c9c93e540a76c031552f4b286aeec.tar.gz
Add CheckCXXSymbolExists.cmake, so this can be used also for C++
This commit splits check_symbol_exists() so that the actual implementation can be also used by check_cxx_symbol_exists() Alex
Diffstat (limited to 'Modules/CheckCXXSymbolExists.cmake')
-rw-r--r--Modules/CheckCXXSymbolExists.cmake42
1 files changed, 42 insertions, 0 deletions
diff --git a/Modules/CheckCXXSymbolExists.cmake b/Modules/CheckCXXSymbolExists.cmake
new file mode 100644
index 0000000000..1b012aefd3
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+++ b/Modules/CheckCXXSymbolExists.cmake
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+# - 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
+
+#=============================================================================
+# Copyright 2003-2011 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+INCLUDE(CheckSymbolExists)
+
+MACRO(CHECK_CXX_SYMBOL_EXISTS SYMBOL FILES VARIABLE)
+ _CHECK_SYMBOL_EXISTS("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.cxx" "${SYMBOL}" "${FILES}" "${VARIABLE}" )
+ENDMACRO(CHECK_CXX_SYMBOL_EXISTS)