QuasarApp/backward-cpp
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Improve CMake build system, allow easy integration

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Make backward easier to use for CMake users, enabling easy feature detection and integration.

We now detect presence of libdw, libbfd and libunwind directly in the script. The macro add_backward adds needed libraries, definitions and the include directory to a target. The pseudo-library enable_backward enables automatic backward processing for common failures to a target.

If BACKWARD_ENABLE_ONLY_IN_DEBUG is set to true, automatic backward processing is only added when the build type is Debug or RelWithDebInfo.

To integrate backward in an existing CMake project:
add_subdirectory(/path/to/backward-cpp)
add_executable(mytarget example.cpp ${backward_ENABLE})
add_backward(mytarget)

BACKWARD_DEFINITIONS has been renamed to backward_DEFINITIONS to have a naming convention for public variables similiar to the find modules.
This commit is contained in:
hesiod 2014-10-18 17:47:18 +02:00 committed by Tobias Markus
parent 3295e060c8
commit 32d64ddbc0
1 changed files with 43 additions and 2 deletions
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45
CMakeLists.txt
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@ -45,17 +45,39 @@ enable_testing()
# CONFIGS
###############################################################################
set(STACK_DETAILS_BACKTRACE_SYMBOL TRUE CACHE BOOL "Use backtrace symbol")
set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE CACHE BOOL "Use backtrace symbol")
set(STACK_DETAILS_DW FALSE CACHE BOOL "Use libdw")
set(STACK_DETAILS_BFD FALSE CACHE BOOL "Use libbfd")
set(STACK_WALKING_UNWIND TRUE CACHE BOOL "Use unwind for stack walking")
set(STACK_WALKING_BACKTRACE FALSE CACHE BOOL "Use backtrace for stack walking")
find_library(BACKWARD_LIBDW_PATH dw)
find_library(BACKWARD_LIBBFD_PATH bfd)
if(NOT BACKWARD_LIBDW_PATH STREQUAL "BACKWARD_LIBDW_PATH-NOTFOUND")
set(STACK_DETAILS_DW TRUE)
list(APPEND backward_LIBRARIES ${BACKWARD_LIBDW_PATH})
elseif(NOT BACKWARD_LIBBFD_PATH STREQUAL "BACKWARD_LIBBFD_PATH-NOTFOUND")
set(STACK_DETAILS_BFD TRUE)
list(APPEND backward_LIBRARIES ${BACKWARD_LIBBFD_PATH})
else()
set(STACK_DETAILS_BACKTRACE_SYMBOL TRUE)
message(INFO "Could not find advanced symbol information library (libdw/libbfd), falling back to backtrace")
endif()
find_library(BACKWARD_LIBUNWIND_PATH unwind)
if(NOT BACKWARD_LIBUNWIND_PATH STREQUAL "BACKWARD_LIBUNWIND_PATH-NOTFOUND")
set(STACK_WALKING_UNWIND TRUE)
list(APPEND backward_LIBRARIES ${BACKWARD_LIBUNWIND_PATH})
else()
set(STACK_WALKING_BACKTRACE TRUE)
message(INFO "Could not find stack backtrace library (libunwind), falling back to backtrace")
endif()
macro(map_definitions var_prefix define_prefix)
foreach(def ${ARGV})
if (${${var_prefix}${def}})
LIST(APPEND BACKWARD_DEFINITIONS "${define_prefix}${def}=1")
LIST(APPEND backward_DEFINITIONS "${define_prefix}${def}=1")
endif()
endforeach()
endmacro()
@ -67,6 +89,25 @@ foreach(def ${BACKWARD_DEFINITIONS})
message(STATUS "${def}")
endforeach()
add_library(enable_backward OBJECT backward.cpp)
target_compile_definitions(enable_backward PRIVATE ${backward_DEFINITIONS})
if(BACKWARD_ONLY_IF_DEBUG)
set(backward_ENABLE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:$<TARGET_OBJECTS:enable_backward> CACHE STRING
"object to enable automatic backward processing (only in Debug/RelWithDebInfo)")
else()
set(backward_ENABLE $<TARGET_OBJECTS:enable_backward> CACHE STRING
"object to enable automatic backward processing")
endif()
set(backward_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE STRING "backward include directory")
set(backward_DEFINITIONS ${backward_DEFINITIONS} CACHE STRING "backward feature definitions")
set(backward_LIBRARIES ${backward_LIBRARIES} CACHE STRING "backward libraries")
macro(add_backward target)
target_include_directories(${target} PRIVATE ${backward_INCLUDE_DIR})
set_property(TARGET ${target} APPEND PROPERTY COMPILE_DEFINITIONS ${backward_DEFINITIONS})
set_property(TARGET ${target} APPEND PROPERTY LINK_LIBRARIES ${backward_LIBRARIES})
endmacro()
###############################################################################
# TESTS
###############################################################################