CMakeLists.txt

#
# Copyright 2023 The Turbo Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

cmake_minimum_required(VERSION 3.20)


# Compiler id for Apple Clang is now AppleClang.
if (POLICY CMP0025)
    cmake_policy(SET CMP0025 NEW)
endif (POLICY CMP0025)

# if command can use IN_LIST
if (POLICY CMP0057)
    cmake_policy(SET CMP0057 NEW)
endif (POLICY CMP0057)

# Project version variables are the empty string if version is unspecified
if (POLICY CMP0048)
    cmake_policy(SET CMP0048 NEW)
endif (POLICY CMP0048)

# option() honor variables
if (POLICY CMP0077)
    cmake_policy(SET CMP0077 NEW)
endif (POLICY CMP0077)

# Allow the user to specify the MSVC runtime
if (POLICY CMP0091)
    cmake_policy(SET CMP0091 NEW)
endif (POLICY CMP0091)

# try_compile() honors the CMAKE_CXX_STANDARD value
if (POLICY CMP0067)
    cmake_policy(SET CMP0067 NEW)
endif (POLICY CMP0067)

if (POLICY CMP0110)
    cmake_policy(SET CMP0110 NEW)
endif (POLICY CMP0110)

if (POLICY CMP0135)
    cmake_policy(SET CMP0135 NEW)
endif (POLICY CMP0135)


project(libtext CXX)

set(PROJECT_DESCRIPTION "Hercules is an ahead of time compiler for a subset of the Python language framework.")
set(PROJECT_VERSION_MAJOR 0)
set(PROJECT_VERSION_MINOR 1)
set(PROJECT_VERSION_PATCH 5)
set(PROJECT_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")

list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/modules)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/package)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/recipes)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/copts)

include(carbin_module)


add_subdirectory(libtext)

if (CARBIN_BUILD_TEST)
    add_subdirectory(test)
endif ()

install(DIRECTORY ${PROJECT_NAME}
        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
        FILES_MATCHING
        PATTERN "*.inc"
        PATTERN "*.h"
        )


# Layout. This works for all platforms:
#   * <prefix>/lib*/cmake/<PROJECT-NAME>
#   * <prefix>/lib*/
#   * <prefix>/include/
set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")

set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")

# Configuration
set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(namespace "${PROJECT_NAME}::")

# Include module with fuction 'write_basic_package_version_file'
include(CMakePackageConfigHelpers)

# Configure '<PROJECT-NAME>ConfigVersion.cmake'
# Use:
#   * PROJECT_VERSION
write_basic_package_version_file(
        "${version_config}" COMPATIBILITY SameMajorVersion
)

# Configure '<PROJECT-NAME>Config.cmake'
# Use variables:
#   * TARGETS_EXPORT_NAME
#   * PROJECT_NAME
configure_package_config_file(
        "cmake/package/carbin_config.cmake.in"
        "${project_config}"
        INSTALL_DESTINATION "${config_install_dir}"
)

#Targets:
#  * <prefix>/lib/libbar.a
#  * <prefix>/lib/libbaz.a
#  * header location after install: <prefix>/include/foo/Bar.hpp
#  * headers can be included by C++ code `#include <foo/Bar.hpp>`


# Config
#   * <prefix>/lib/cmake/Foo/FooConfig.cmake
#   * <prefix>/lib/cmake/Foo/FooConfigVersion.cmake
install(
        FILES
        "${project_config}" "${version_config}"
        DESTINATION
        "${config_install_dir}"
)

# Config
#   * <prefix>/lib/cmake/Foo/FooTargets.cmake

install(
        EXPORT
        "${TARGETS_EXPORT_NAME}"
        NAMESPACE
        "${namespace}"
        DESTINATION
        "${config_install_dir}"
)