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if(${CMAKE_VERSION} VERSION_GREATER "3.3")
    cmake_policy(SET CMP0063 NEW)
endif()

set(LIBRARY "libcmark")
set(STATICLIBRARY "libcmark_static")
set(HEADERS
  cmark.h
  parser.h
  buffer.h
  node.h
  iterator.h
  chunk.h
  references.h
  utf8.h
  scanners.h
  inlines.h
  houdini.h
  cmark_ctype.h
  render.h
  )
set(LIBRARY_SOURCES
  cmark.c
  node.c
  iterator.c
  blocks.c
  inlines.c
  scanners.c
  scanners.re
  utf8.c
  buffer.c
  references.c
  render.c
  man.c
  xml.c
  html.c
  commonmark.c
  latex.c
  houdini_href_e.c
  houdini_html_e.c
  houdini_html_u.c
  cmark_ctype.c
  ${HEADERS}
  )

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

include_directories(. ${CMAKE_CURRENT_BINARY_DIR})

configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmark_version.h.in
  ${CMAKE_CURRENT_BINARY_DIR}/cmark_version.h)

configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libcmark.pc.in
  ${CMAKE_CURRENT_BINARY_DIR}/libcmark.pc @ONLY)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libcmark.pc
  DESTINATION lib${LIB_SUFFIX}/pkgconfig)

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)

# Check integrity of node structure when compiled as debug:
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DCMARK_DEBUG_NODES")
set(CMAKE_LINKER_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG}")

set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE} -pg")
set(CMAKE_LINKER_PROFILE "${CMAKE_LINKER_FLAGS_RELEASE} -pg")

if (${CMAKE_VERSION} VERSION_GREATER "1.8")
  set(CMAKE_C_VISIBILITY_PRESET hidden)
  set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
elseif(CMAKE_COMPILER_IS_GNUCC OR ${CMAKE_C_COMPILER_ID} STREQUAL "Clang")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
endif ()

add_library(${LIBRARY} SHARED ${LIBRARY_SOURCES})
add_library(${STATICLIBRARY} STATIC ${LIBRARY_SOURCES})
# Include minor version and patch level in soname for now.
set_target_properties(${LIBRARY} PROPERTIES
  OUTPUT_NAME "cmark"
  SOVERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}
  VERSION ${PROJECT_VERSION})
set_target_properties(${STATICLIBRARY} PROPERTIES
  COMPILE_FLAGS -DCMARK_STATIC_DEFINE
  POSITION_INDEPENDENT_CODE ON)

if (MSVC)
  set_target_properties(${STATICLIBRARY} PROPERTIES
    OUTPUT_NAME "cmark_static"
    VERSION ${PROJECT_VERSION})
else()
  set_target_properties(${STATICLIBRARY} PROPERTIES
    OUTPUT_NAME "cmark"
    VERSION ${PROJECT_VERSION})
endif(MSVC)

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

# Avoid name clash between PROGRAM and LIBRARY pdb files.
set_target_properties(${LIBRARY} PROPERTIES PDB_NAME cmark_dll)

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

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

set(CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_NO_WARNINGS ON)
include (InstallRequiredSystemLibraries)
install(TARGETS ${PROGRAM} ${LIBRARY} ${STATICLIBRARY}
  EXPORT cmark
  RUNTIME DESTINATION bin
  LIBRARY DESTINATION lib${LIB_SUFFIX}
  ARCHIVE DESTINATION lib${LIB_SUFFIX}
  )

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

install(EXPORT cmark DESTINATION lib${LIB_SUFFIX}/cmake)

# Feature tests
include(CheckIncludeFile)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckSymbolExists)
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()
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4706 /D_CRT_SECURE_NO_WARNINGS")
elseif(CMAKE_COMPILER_IS_GNUCC OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -std=c99 -pedantic")
endif()

# Compile as C++ under MSVC older than 12.0
if(MSVC AND MSVC_VERSION LESS 1800)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /TP")
endif()

if(CMAKE_BUILD_TYPE STREQUAL "Ubsan")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined")
endif()