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Add cmake option BACKWARD_INSTALL to allow backward-cpp built as a subproject but not be installed #338

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Add cmake option BACKWARD_INSTALL to allow backward-cpp built as a subproject but not be installed #338

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44661b3
Add option BACKWARD_INSTALL
zhao-shihan Jun 16, 2024
a7e37f0
Fix CMakeLists.txt
zhao-shihan Jun 16, 2024
734cdcd
Update CMakeLists.txt to not break current behavior
zhao-shihan Jun 22, 2024
6146999
Fix CMake target export
zhao-shihan Jun 22, 2024
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42 changes: 20 additions & 22 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@
cmake_minimum_required(VERSION 3.14)
project(backward CXX)

# https://cmake.org/cmake/help/latest/variable/PROJECT_IS_TOP_LEVEL.html
string(COMPARE EQUAL ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_SOURCE_DIR} PROJECT_IS_TOP_LEVEL)

# Introduce variables:
# * CMAKE_INSTALL_LIBDIR
# * CMAKE_INSTALL_BINDIR
Expand All @@ -36,12 +39,8 @@ include(BackwardConfig.cmake)
###############################################################################

option(BACKWARD_SHARED "Build backward as a shared library" OFF)
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR AND NOT DEFINED BACKWARD_TESTS)
# If this is a top level CMake project, we most lixely want the tests
set(BACKWARD_TESTS ON CACHE BOOL "Enable tests")
else()
set(BACKWARD_TESTS OFF CACHE BOOL "Enable tests")
endif()
option(BACKWARD_INSTALL "Install backward." ON)
option(BACKWARD_TESTS "Enable tests" ${PROJECT_IS_TOP_LEVEL})

###############################################################################
# COMPILER FLAGS
Expand Down Expand Up @@ -157,20 +156,19 @@ if(BACKWARD_TESTS)
endforeach()
endif()

install(
FILES "backward.hpp"
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(
FILES "BackwardConfig.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
)
# check if Backward is being used as a top-level project or included as a subproject
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
# export the targets (note that exporting backward_object does not make sense)
install(TARGETS backward_interface backward EXPORT BackwardTargets)
# install a CMake file for the exported targets
install(EXPORT BackwardTargets
NAMESPACE Backward::
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
if(BACKWARD_INSTALL)
install(
FILES "backward.hpp"
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(
FILES "BackwardConfig.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
)
# export the targets (note that exporting backward_object does not make sense)
install(TARGETS backward_interface backward EXPORT BackwardTargets)
# install a CMake file for the exported targets
install(EXPORT BackwardTargets
NAMESPACE Backward::
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
endif()