CMakeLists.txt

cmake_minimum_required(VERSION 3.8)


#### Basic project settings
# Project name
project(Caramel)

# Version numbers
set(VERSION_MAJOR 0)
set(VERSION_MINOR 0)
set(VERSION_PATCH 1)
configure_file (
        "src/Common.h.in"
        "${PROJECT_BINARY_DIR}/Common.h"
)
include_directories("${PROJECT_BINARY_DIR}")

# Change the required C++ standard
set(CMAKE_CXX_STANDARD 17)

# Make the compiler more strict
#set(CXX_STRICT_WARNINGS "-Werror")
set(CXX_STRICT_WARNINGS "-fno-elide-constructors -pedantic-errors -ansi -Wextra -Wall -Winit-self -Wold-style-cast -Woverloaded-virtual -Wuninitialized -Winit-self")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_STRICT_WARNINGS}")

# Change default output directory
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build/cpp-bin)

# Print the source directory
message("Current source directory: " ${CMAKE_CURRENT_SOURCE_DIR})


#### Library setup : copy shared object + define grammar as a library
set(PROJECT_LIBRARY_DIR ${CMAKE_SOURCE_DIR}/lib)

# Find Antlr runtime library and store the path in ANTLR_RUNTIME
find_library(ANTLR_RUNTIME NAMES libantlr4-runtime.so.4.7.1 PATHS ${PROJECT_LIBRARY_DIR})

# Copy shared library in output directory (we avoid setting LD_LIBRARY_PATH)
configure_file(${PROJECT_LIBRARY_DIR}/libantlr4-runtime.so.4.7.1
        ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/libantlr4-runtime.so.4.7.1 COPYONLY)

# Get every cpp file path into GRAMMAR_BASE
file(GLOB_RECURSE GRAMMAR_BASE ${CMAKE_SOURCE_DIR}/build/cpp-grammar/*.cpp)

# Define Grammar as a library managed and built by CMake
add_library(Grammar ${GRAMMAR_BASE})
target_include_directories(Grammar SYSTEM PRIVATE ${PROJECT_LIBRARY_DIR}/antlr4-runtime-headers)

# Disable GCC warnings when compiling Antlr
target_compile_options(Grammar
        PRIVATE "-Wno-unused-parameter"
        PRIVATE "-Wno-unused-but-set-variable")


#### Executable setup: define source files, executable, include directories and library links
file(GLOB_RECURSE SOURCE_FILES
        "src/*.cpp"
        "src/*.h"
        )

add_executable(Caramel ${SOURCE_FILES})

# Check if Chef has been invoked before
if(NOT EXISTS "${CMAKE_SOURCE_DIR}/build/cpp-grammar")
    message("You have to run `./chef.py build --grammar --language cpp --brew` first.")
endif()

# For Grammar library and Caramel, set include directories. Caramel should have Grammar headers included.
target_include_directories(Caramel SYSTEM PRIVATE ${PROJECT_LIBRARY_DIR}/antlr4-runtime-headers)
target_include_directories(Caramel PRIVATE ${CMAKE_SOURCE_DIR}/build/cpp-grammar)

# Add the tclap library.
target_include_directories(Caramel SYSTEM PRIVATE ${PROJECT_LIBRARY_DIR}/tclap/include)

# Link Caramel
target_link_libraries(Caramel ${ANTLR_RUNTIME})
target_link_libraries(Caramel Grammar)