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add single_header CMake target

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Théo DELRIEU 2017-08-14 20:45:33 +02:00
parent 57d822b6e2
commit 7e4ee23f40
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GPG key ID: 51AC4B3A2C47C10F
5 changed files with 19119 additions and 27 deletions
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21
CMakeLists.txt
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@ -6,6 +6,12 @@ cmake_minimum_required(VERSION 3.0.0)
##
project(nlohmann_json VERSION 3.0.1 LANGUAGES CXX)
##
## INCLUDE
##
##
include(ExternalProject)
##
## OPTIONS
##
@ -15,7 +21,7 @@ option(JSON_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ON)
## CONFIGURATION
##
set(NLOHMANN_JSON_TARGET_NAME ${PROJECT_NAME})
set(NLOHMANN_JSON_SOURCE_DIR "src/")
set(NLOHMANN_JSON_SOURCE_DIR "src")
set(NLOHMANN_JSON_CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR "include")
set(NLOHMANN_JSON_HEADER_INSTALL_DIR "${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}/nlohmann")
@ -62,6 +68,19 @@ if(BUILD_TESTING AND JSON_BuildTests)
add_subdirectory(test)
endif()
ExternalProject_Add(amalgamate
GIT_REPOSITORY "https://github.com/theodelrieu/Amalgamate"
CMAKE_ARGS "-DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}"
)
# There is no way to tell amalgamate to force-write the output file even if it already exists...
add_custom_target(single_header ALL rm -f "${CMAKE_SOURCE_DIR}/single_header/json.hpp"
COMMENT "Amalgamating json.hpp..."
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/${NLOHMANN_JSON_SOURCE_DIR}
DEPENDS amalgamate
COMMAND "${CMAKE_BINARY_DIR}/bin/amalgamate" -w '*.hpp' -i . json.hpp "${CMAKE_SOURCE_DIR}/single_header/json.hpp"
)
##
## INSTALL
## install header files, generate and install cmake config files for find_package()