diff options
Diffstat (limited to 'Modules/CheckSymbolExists.cmake')
| -rw-r--r-- | Modules/CheckSymbolExists.cmake | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake index 0969bc5..eeac4c9 100644 --- a/Modules/CheckSymbolExists.cmake +++ b/Modules/CheckSymbolExists.cmake @@ -1,26 +1,33 @@ -# - Check if a symbol exists as a function, variable, or macro +#.rst: +# CheckSymbolExists +# ----------------- +# +# Check if a symbol exists as a function, variable, or macro +# # CHECK_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. +# <files> and store the result in a <variable>. Specify the list of +# files in one argument as a semicolon-separated list. # # 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). -# If the check needs to be done in C++, consider using CHECK_CXX_SYMBOL_EXISTS(), -# which does the same as CHECK_SYMBOL_EXISTS(), but in C++. +# 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). If +# the check needs to be done in C++, consider using +# CHECK_CXX_SYMBOL_EXISTS(), which does the same as +# CHECK_SYMBOL_EXISTS(), but in C++. +# +# The following variables may be set before calling this macro to modify +# the way the check is run: # -# 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_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. |