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# Try to find libunwind
#
# based on: http://www.cmake.org/Wiki/CMake:How_To_Find_Libraries#Using_external_libraries_that_CMake_doesn.27t_yet_have_modules_for
# written by Maj.Boredom
#
# Once done this will define
# LIBUNWIND_FOUND - System has libunwind
# and optionally,
# LIBUNWIND_INCLUDE_DIRS - The libunwind include directories
# LIBUNWIND_LIBRARIES - The libraries needed to use libunwind
# LIBUNWIND_DEFINITIONS - Compiler switches needed to use libunwind
#
find_package(PkgConfig)
set(LIB_STD_ARGS
PATH_SUFFIXES
lib
lib64
PATHS
${PROJECT_BINARY_DIR}
${PROJECT_SOURCE_DIR}
$ENV{LD_LIBRARY_PATH}
$ENV{LIBRARY_PATH}
/usr/lib
/usr/lib64
/usr/local/lib
/usr/local/lib64
/usr/lib/system
)
find_path(LIBUNWIND_INCLUDE_DIRS libunwind.h)
if (APPLE AND LIBUNWIND_INCLUDE_DIRS)
# FIXME: OS X 10.10 doesn't have static libunwind.a only dynamic libunwind.dylib;
# link with "-framework Cocoa"
set(LIBUNWIND_LIBRARY "-framework Cocoa")
else ()
find_library(LIBUNWIND_LIBRARY NAMES unwind ${LIB_STD_ARGS})
endif ()
if (LIBUNWIND_INCLUDE_DIRS AND LIBUNWIND_LIBRARY)
set(LIBUNWIND_FOUND TRUE)
set(LIBUNWIND_DEFINITIONS "-DLIBUNWIND")
set(LIBUNWIND_LIBRARIES ${LIBUNWIND_LIBRARY})
else (LIBUNWIND_INCLUDE_DIRS AND LIBUNWIND_LIBRARY)
set(LIBUNWIND_FOUND FALSE)
endif(LIBUNWIND_INCLUDE_DIRS AND LIBUNWIND_LIBRARY)
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