CMake build config

.gitignore

@@ -14,3 +14,5 @@ install-sh
 ltmain.sh
 missing
 test-driver
+
+/build/

CMakeLists.txt

@@ -0,0 +1,115 @@
+cmake_minimum_required(VERSION 3.10)
+set(project_name noshell)
+
+set(NOSHELL_MASTER_PROJECT OFF)
+if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(NOSHELL_MASTER_PROJECT ON)
+endif()
+
+option(NOSHELL_BUILD_TESTS "Set to ON to build tests" ${NOSHELL_MASTER_PROJECT})
+option(NOSHELL_ENABLE_INSTALL "Generate the install target" ${NOSHELL_MASTER_PROJECT})
+
+# get version
+file(READ "${CMAKE_CURRENT_SOURCE_DIR}/configure.ac" configure_ac)
+string(REGEX MATCH "AC_INIT\\\(\\\[noshell\\\],\\\[(.*)\\\],\\\[[email protected]\\\]\\\)" _ "${configure_ac}")
+if(NOT CMAKE_MATCH_COUNT EQUAL 1)
+    message(FATAL_ERROR "Could not extract major version number from configure.ac")
+endif()
+set(noshell_version ${CMAKE_MATCH_1})
+message(STATUS "noshell version: ${noshell_version}")
+
+
+project(${project_name} VERSION "${noshell_version}" LANGUAGES CXX)
+
+include(GNUInstallDirs)
+
+set(NOSHELL_SRCS lib/noshell.cc lib/setters.cc lib/utils.cc)
+
+add_library(${project_name} SHARED ${NOSHELL_SRCS})
+add_library(${project_name}-static STATIC ${NOSHELL_SRCS})
+add_library(${project_name}::${project_name} ALIAS ${project_name})
+add_library(${project_name}::${project_name}-static ALIAS ${project_name}-static)
+
+target_include_directories(${project_name} 
+    PUBLIC 
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/noshell-${noshell_version}>)
+target_include_directories(${project_name}-static
+    PUBLIC 
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/noshell-${noshell_version}>)
+set_target_properties(${project_name}
+    PROPERTIES
+        CXX_STANDARD 11)
+set_target_properties(${project_name}-static
+    PROPERTIES
+        CXX_STANDARD 11
+        POSITION_INDEPENDENT_CODE 1
+        OUTPUT_NAME ${project_name})
+
+if(NOSHELL_ENABLE_INSTALL)
+    set(project_config_in "${CMAKE_CURRENT_LIST_DIR}/noshellConfig.cmake.in")
+    set(project_config_out "${CMAKE_CURRENT_BINARY_DIR}/noshellConfig.cmake")
+    set(config_targets_file "noshellConfigTargets.cmake")
+    set(version_config_file "${CMAKE_CURRENT_BINARY_DIR}/noshellConfigVersion.cmake")
+    set(export_dest_dir "${CMAKE_INSTALL_LIBDIR}/cmake/noshell")
+    set(pkgconfig_install_dir "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    set(pkgconfig "${CMAKE_CURRENT_BINARY_DIR}/noshell.pc")
+
+    set(prefix "${CMAKE_INSTALL_PREFIX}")
+    set(exec_prefix "\${prefix}")
+    if (IS_ABSOLUTE "${CMAKE_INSTALL_LIBDIR}")
+        set(libdir "${CMAKE_INSTALL_LIBDIR}")
+    else()
+        set(libdir "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
+    endif()
+    if (IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
+        set(includedir "${CMAKE_INSTALL_INCLUDEDIR}")
+    else()
+        set(includedir "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
+    endif()
+    set(PACKAGE_VERSION "${noshell_version}")
+    configure_file(
+        "${CMAKE_CURRENT_SOURCE_DIR}/noshell.pc.in"
+        "${pkgconfig}"
+        @ONLY)
+
+    install(FILES "${pkgconfig}"
+            DESTINATION "${pkgconfig_install_dir}")
+
+    install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/"
+            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/noshell-${noshell_version}")
+
+    install(TARGETS ${project_name} ${project_name}-static
+            EXPORT ${project_name}
+            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+    export(
+        TARGETS ${project_name}
+        NAMESPACE ${project_name}::
+        FILE "${CMAKE_CURRENT_BINARY_DIR}/${config_targets_file}")
+
+    install(EXPORT ${project_name}
+            DESTINATION ${export_dest_dir} 
+            NAMESPACE ${project_name}:: 
+            FILE ${config_targets_file})
+
+    include(CMakePackageConfigHelpers)
+    configure_package_config_file("${project_config_in}" "${project_config_out}"
+        INSTALL_DESTINATION ${export_dest_dir})
+
+
+    write_basic_package_version_file("${version_config_file}"
+                                    VERSION "${noshell_version}"
+                                    COMPATIBILITY ExactVersion)
+
+    install(FILES "${project_config_out}" "${version_config_file}" DESTINATION "${export_dest_dir}")
+endif()
+
+
+if(NOSHELL_BUILD_TESTS)
+    enable_testing()
+    add_subdirectory(tests)
+endif()

README.md

@@ -78,6 +78,23 @@ sudo make install
 At this point, this library has only been tested on Linux, with `g++`
 version 4.7 or newer and `clang++` version 3.2.
 
+### CMake
+
+Alternatively, you can use CMake to build the library:
+
+```sh
+mkdir build
+cmake -S . -B build
+cmake --build build
+sudo cmake --install build
+```
+
+Run the tests with:
+
+```sh
+cd build && ctest
+```
+
 ## Using the library
 
 Add the following to your make file:
@@ -86,3 +103,17 @@ Add the following to your make file:
 CXXFLAGS = $(shell pkg-config --cflags noshell)
 LDFLAGS = $(shell pkg-config --libs noshell)
 ```
+
+### CMake
+
+Add the following to your `CMakeLists.txt`:
+
+```cmake
+find_package(noshell REQUIRED)
+
+# link shared library
+target_link_libraries(mytarget noshell::noshell)
+
+# link static library
+target_link_libraries(mytarget noshell::noshell-static)
+```

include/noshell/handle.hpp

@@ -152,7 +152,7 @@ class Exit {
   void wait() { for(auto& h : handles) h.wait(); }
 };
 
-std::ostream& operator<<(std::ostream& os, const Exit& exit) {
+inline std::ostream& operator<<(std::ostream& os, const Exit& exit) {
   auto it = exit.begin();
   if(it != exit.end()) {
     os << *it;

noshellConfig.cmake.in

@@ -0,0 +1,6 @@
+@PACKAGE_INIT@
+
+set(config_targets_file @config_targets_file@)
+include("${CMAKE_CURRENT_LIST_DIR}/${config_targets_file}")
+
+check_required_components(noshell)

tests/CMakeLists.txt

@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 3.10)
+project(noshell_tests CXX)
+
+if(NOT TARGET noshell)
+    # Stand-alone build
+    find_package(noshell REQUIRED)
+endif()
+
+list(APPEND NOSHELL_TESTS_HELPER
+    check_open_fd.cc
+    kill_self.cc
+    puts_to.cc)
+
+list(APPEND NOSHELL_TESTS_LIST
+    libtest_misc.cc
+    test_cmd_redirection.cc
+    test_error.cc
+    test_extra_fds.cc
+    test_fd_type.cc
+    test_literal.cc
+    test_pipeline.cc
+    test_resources.cc
+    test_simple_command.cc)
+
+find_package(GTest REQUIRED)
+find_package(Threads REQUIRED)
+
+foreach(src ${NOSHELL_TESTS_HELPER})
+    GET_FILENAME_COMPONENT(target_name ${src} NAME_WE)
+    add_executable(${target_name} ${src})
+endforeach()
+
+add_executable(noshell_tests ${NOSHELL_TESTS_LIST})
+target_link_libraries(noshell_tests GTest::Main GTest::GTest Threads::Threads noshell::noshell)
+
+add_test(noshell_tests noshell_tests)