cmake_minimum_required(VERSION 3.2)

project(elfinfo CXX ASM)

if (NOT IS_DIRECTORY "${CMAKE_SOURCE_DIR}/antlr4")
    message(STATUS "Checking out Antlr...")
    execute_process(
            COMMAND git clone https://github.com/DanMcLaughlin/antlr4
            COMMAND cd antlr4 && mvn clean install -DskipTests
            COMMAND ${CMAKE_COMMAND} -E make_directory antlr4-build
            COMMAND cd antlr4-build && cmake ../antlr4 -DCMAKE_INSTALL_PREFIX=../antlr4-install -DCMAKE_INSTALL_PREFIX=../antlr4-install -DCMAKE_BUILD_TYPE=Release
            WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
    )
endif ()

#include("${CMAKE_BINARY_DIR}/antlr4/runtime/Cpp/CMakeLists.txt")

#get_filename_component(ANTLR_INSTALL_DIR "${CMAKE_BINARY_DIR}" ABSOLUTE)

set(ANTLR_INSTALL_DIR "${CMAKE_SOURCE_DIR}/antlr4-install")

# include(ExternalProject)
# ExternalProject_Add(antlr-project
#         SOURCE_DIR "antlr4/runtime/Cpp"
#         DOWNLOAD_COMMAND ""
#         UPDATE_COMMAND ""
#         CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${ANTLR_INSTALL_DIR} -DCMAKE_BUILD_TYPE=Release)

include("${ANTLR_INSTALL_DIR}/lib/cmake/Antlr4/Antlr4TargetsShared.cmake")
include("${ANTLR_INSTALL_DIR}/lib/cmake/Antlr4/Antlr4Helpers.cmake")
set(ANTLR4_JAR "${CMAKE_SOURCE_DIR}/antlr4/tool/target/antlr4-4.5.4-SNAPSHOT.jar")

#antlr4_add_lexer(GnuLdLexer.g4)
#antlr4_add_parser(GnuLdParser.g4)
antlr4_add_target(TARGET GnuLd STATIC LEXER GnuLdLexer.g4 PARSER GnuLdParser.g4)

add_executable(elfinfo elfinfo.cpp ld.cpp ld.h)
target_compile_options(elfinfo PUBLIC "--std=c++14")
target_link_libraries(elfinfo elf GnuLd Antlr4::antlr4_shared)

INSTALL(TARGETS elfinfo
        RUNTIME DESTINATION bin
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib
        )