cmake_minimum_required(VERSION 2.8)
set(LIBRARY "libcmark")
set(HEADERS
  cmark.h
  ast.h
  buffer.h
  chunk.h
  references.h
  debug.h
  bench.h
  utf8.h
  scanners.h
  inlines.h
  html/html_unescape.h
  html/houdini.h
  )
set(LIBRARY_SOURCES
  cmark.c
  blocks.c
  inlines.c
  print.c
  scanners.c
  scanners.re
  utf8.c
  buffer.c
  references.c
  html/html.c
  html/html_unescape.gperf
  html/houdini_href_e.c
  html/houdini_html_e.c
  html/houdini_html_u.c
  ${HEADERS}
  )

set(PROGRAM "cmark")
set(PROGRAM_SOURCES
  ${LIBRARY_SOURCES}
  main.c
  )

include_directories(. html ${CMAKE_CURRENT_BINARY_DIR})

set(RE2C re2c)
if (MSVC)
    file(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR} DOS_CURRENT_SOURCE_DIR)
    add_custom_command( OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/scanners.c
                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/scanners.re
                        COMMAND ${RE2C} --case-insensitive -b -i ${DOS_CURRENT_SOURCE_DIR}\\scanners.re >${DOS_CURRENT_SOURCE_DIR}\\scanners.c)
else(MSVC)
    add_custom_command( OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/scanners.c
                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/scanners.re
                        COMMAND ${RE2C} --case-insensitive -b -i ${CMAKE_CURRENT_SOURCE_DIR}/scanners.re >${CMAKE_CURRENT_SOURCE_DIR}/scanners.c)
endif(MSVC)

include (GenerateExportHeader)

add_executable(${PROGRAM} ${PROGRAM_SOURCES})
add_compiler_export_flags()

# Disable the PUBLIC declarations when compiling the executable:
set_target_properties(${PROGRAM} PROPERTIES
  COMPILE_FLAGS -DCMARK_STATIC_DEFINE)

if (${CMAKE_MAJOR_VERSION} GREATER 1 AND ${CMAKE_MINOR_VERSION} GREATER 8)
  set(CMAKE_C_VISIBILITY_PRESET hidden)
  set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
elseif(CMAKE_COMPILER_IS_GNUCC OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
endif ()

add_library(${LIBRARY} SHARED ${LIBRARY_SOURCES})
set_target_properties(${LIBRARY}
  PROPERTIES OUTPUT_NAME "cmark")

set_property(TARGET ${LIBRARY}
  APPEND PROPERTY MACOSX_RPATH true)

generate_export_header(${LIBRARY}
    BASE_NAME ${PROJECT_NAME})

if (MSVC)
  set_property(TARGET ${PROGRAM}
    APPEND PROPERTY LINK_FLAGS /INCREMENTAL:NO)
endif(MSVC)

install(TARGETS ${PROGRAM} ${LIBRARY}
  RUNTIME DESTINATION bin
  LIBRARY DESTINATION lib
  )

install(FILES cmark.h ${CMAKE_CURRENT_BINARY_DIR}/cmark_export.h
  DESTINATION include
  )

# Feature tests
include(CheckIncludeFile)
include(CheckCSourceCompiles)
CHECK_INCLUDE_FILE(stdbool.h HAVE_STDBOOL_H)
CHECK_C_SOURCE_COMPILES(
  "int main() { __builtin_expect(0,0); return 0; }"
  HAVE___BUILTIN_EXPECT)
CHECK_C_SOURCE_COMPILES("
  int f(void) __attribute__ (());
  int main() { return 0; }
" HAVE___ATTRIBUTE__)

CONFIGURE_FILE(
  ${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
  ${CMAKE_CURRENT_BINARY_DIR}/config.h)

# Always compile with warnings
if(MSVC)
  # Force to always compile with W4
  if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
    string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
  else()
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
  endif()
elseif(CMAKE_COMPILER_IS_GNUCC OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -std=c99 -pedantic")
endif()

# Compile as C++ under MSVC
if(MSVC)
  set(CMAKE_C_FLAGS "/TP")
endif()

if(CMAKE_COMPILER_IS_MINGW)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -fgnu89-inline")
endif(CMAKE_COMPILER_IS_MINGW)

if($ENV{TIMER})
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DTIMER=1")
endif($ENV{TIMER})