66 lines
2.8 KiB
CMake
66 lines
2.8 KiB
CMake
# - Find provider for backtrace(3)
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# Checks if OS supports backtrace(3) via either libc or custom library.
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# This module defines the following variables:
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# BACKTRACE_HEADER - header file needed for backtrace(3)
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# BACKTRACE_INCLUDE_DIR - where to find ${BACKTRACE_HEADER}
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# BACKTRACE_LIBRARIES - libraries needed for backtrace
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# BACKTRACE_FOUND - is set if and only if backtrace(3) support detected
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#
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#
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# Copyright (c) 2013, Vadim Zhukov <persgray@gmail.com>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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include(CMakePushCheckState)
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include(CheckSymbolExists)
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include(FindPackageHandleStandardArgs)
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# List of variables to be provided to find_package_handle_standard_args()
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set(_BACKTRACE_STD_ARGS BACKTRACE_INCLUDE_DIR)
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set(BACKTRACE_HEADER "execinfo.h")
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find_path(BACKTRACE_INCLUDE_DIR ${BACKTRACE_HEADER})
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# First, check if we already have backtrace(), e.g., in libc
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cmake_push_check_state()
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set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${BACKTRACE_INCLUDE_DIR})
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check_symbol_exists("backtrace" "execinfo.h" _BACKTRACE_SYM_FOUND)
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cmake_pop_check_state()
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if(_BACKTRACE_SYM_FOUND)
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# Warning: CMAKE_REQUIRED_LIBRARIES could contain non-paths, so
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# don't add BACKTRACE_LIBRARIES to standard args list in this case.
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set(BACKTRACE_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
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if(NOT BACKTRACE_FIND_QUIETLY)
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message("backtrace detected in default set of libraries: "
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${BACKTRACE_LIBRARIES})
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endif(NOT BACKTRACE_FIND_QUIETLY)
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else(_BACKTRACE_SYM_FOUND)
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# Check for external library, for non-glibc systems
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if(BACKTRACE_INCLUDE_DIR)
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# OpenBSD has libbacktrace renamed to libexecinfo
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find_library(BACKTRACE_LIBRARIES "execinfo")
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else(BACKTRACE_INCLUDE_DIR)
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set(BACKTRACE_HEADER "backtrace.h")
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find_path(BACKTRACE_INCLUDE_DIR ${BACKTRACE_HEADER})
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find_library(BACKTRACE_LIBRARIES "backtrace")
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endif(BACKTRACE_INCLUDE_DIR)
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# Prepend list with library path as it's more common practice
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set(_BACKTRACE_STD_ARGS BACKTRACE_LIBRARIES ${_BACKTRACE_STD_ARGS})
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endif(_BACKTRACE_SYM_FOUND)
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find_package_handle_standard_args(backtrace DEFAULT_MSG ${_BACKTRACE_STD_ARGS})
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mark_as_advanced(BACKTRACE_HEADER BACKTRACE_INCLUDE_DIR BACKTRACE_LIBRARIES)
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