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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.14...3.22)
# ---- Project ----
# Note: update this to your new project's name and version
project(
Greeter
VERSION 1.0
LANGUAGES CXX
)
# ---- Include guards ----
if(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
message(
FATAL_ERROR
"In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there."
)
endif()
# ---- Add dependencies via CPM ----
# see https://github.com/TheLartians/CPM.cmake for more info
include(cmake/CPM.cmake)
# PackageProject.cmake will be used to make our target installable
CPMAddPackage("gh:TheLartians/PackageProject.cmake@1.8.0")
CPMAddPackage(
NAME fmt
GIT_TAG 10.2.1
GITHUB_REPOSITORY fmtlib/fmt
OPTIONS "FMT_INSTALL YES" # create an installable target
)
# ---- Add source files ----
# Note: globbing sources is considered bad practice as CMake's generators may not detect new files
# automatically. Keep that in mind when changing files, or explicitly mention them here.
file(GLOB_RECURSE headers CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/include/*.h")
file(GLOB_RECURSE sources CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/source/*.cpp")
# ---- Create library ----
# Note: for header-only libraries change all PUBLIC flags to INTERFACE and create an interface
# target: add_library(${PROJECT_NAME} INTERFACE)
add_library(${PROJECT_NAME} ${headers} ${sources})
set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 17)
# being a cross-platform target, we enforce standards conformance on MSVC
target_compile_options(${PROJECT_NAME} PUBLIC "$<$<COMPILE_LANG_AND_ID:CXX,MSVC>:/permissive->")
# Link dependencies
target_link_libraries(${PROJECT_NAME} PRIVATE fmt::fmt)
target_include_directories(
${PROJECT_NAME} PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include/${PROJECT_NAME}-${PROJECT_VERSION}>
)
# ---- Create an installable target ----
# this allows users to install and find the library via `find_package()`.
# the location where the project's version header will be placed should match the project's regular
# header paths
string(TOLOWER ${PROJECT_NAME}/version.h VERSION_HEADER_LOCATION)
packageProject(
NAME ${PROJECT_NAME}
VERSION ${PROJECT_VERSION}
NAMESPACE ${PROJECT_NAME}
BINARY_DIR ${PROJECT_BINARY_DIR}
INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include
INCLUDE_DESTINATION include/${PROJECT_NAME}-${PROJECT_VERSION}
VERSION_HEADER "${VERSION_HEADER_LOCATION}"
COMPATIBILITY SameMajorVersion
DEPENDENCIES "fmt 9.1.0"
)