INCLUDE(CheckIncludeFile)
INCLUDE(CheckFunctionExists)
INCLUDE(CheckTypeSize)

CHECK_INCLUDE_FILE(dirent.h     HAVE_DIRENT_H)
CHECK_INCLUDE_FILE(stdint.h     HAVE_STDINT_H)
CHECK_INCLUDE_FILE(inttypes.h   HAVE_INTTYPES_H)
CHECK_INCLUDE_FILE(sys/stat.h   HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILE(sys/types.h  HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILE(unistd.h     HAVE_UNISTD_H)
CHECK_INCLUDE_FILE(windows.h    HAVE_WINDOWS_H)

CHECK_FUNCTION_EXISTS(bcopy     HAVE_BCOPY)
CHECK_FUNCTION_EXISTS(memmove   HAVE_MEMMOVE)
CHECK_FUNCTION_EXISTS(strerror  HAVE_STRERROR)
CHECK_FUNCTION_EXISTS(strtoll   HAVE_STRTOLL)
CHECK_FUNCTION_EXISTS(strtoq    HAVE_STRTOQ)
CHECK_FUNCTION_EXISTS(_strtoi64 HAVE__STRTOI64)

CHECK_TYPE_SIZE("long long"             LONG_LONG)
CHECK_TYPE_SIZE("unsigned long long"    UNSIGNED_LONG_LONG)

DISABLE_WARNINGS(unused-function)
DISABLE_WARNINGS(implicit-fallthrough)

# User-configurable options

SET(SUPPORT_PCRE8 1)
SET(PCRE_LINK_SIZE "2")
SET(PCRE_PARENS_NEST_LIMIT "250")
SET(PCRE_MATCH_LIMIT "10000000")
SET(PCRE_MATCH_LIMIT_RECURSION "MATCH_LIMIT")
SET(PCRE_NEWLINE "LF")
SET(NO_RECURSE 1)
SET(PCRE_POSIX_MALLOC_THRESHOLD "10")
SET(BSR_ANYCRLF 0)

IF (MINGW)
  OPTION(NON_STANDARD_LIB_PREFIX
         "ON=Shared libraries built in mingw will be named pcre.dll, etc., instead of libpcre.dll, etc."
         OFF)

  OPTION(NON_STANDARD_LIB_SUFFIX
         "ON=Shared libraries built in mingw will be named libpcre-0.dll, etc., instead of libpcre.dll, etc."
         OFF)
ENDIF(MINGW)

# Prepare build configuration

SET(pcre_have_long_long 0)
SET(pcre_have_ulong_long 0)

IF(HAVE_LONG_LONG)
        SET(pcre_have_long_long 1)
ENDIF(HAVE_LONG_LONG)

IF(HAVE_UNSIGNED_LONG_LONG)
        SET(pcre_have_ulong_long 1)
ENDIF(HAVE_UNSIGNED_LONG_LONG)

SET(NEWLINE "")

IF(PCRE_NEWLINE STREQUAL "LF")
        SET(NEWLINE "10")
ENDIF(PCRE_NEWLINE STREQUAL "LF")
IF(PCRE_NEWLINE STREQUAL "CR")
        SET(NEWLINE "13")
ENDIF(PCRE_NEWLINE STREQUAL "CR")
IF(PCRE_NEWLINE STREQUAL "CRLF")
        SET(NEWLINE "3338")
ENDIF(PCRE_NEWLINE STREQUAL "CRLF")
IF(PCRE_NEWLINE STREQUAL "ANY")
        SET(NEWLINE "-1")
ENDIF(PCRE_NEWLINE STREQUAL "ANY")
IF(PCRE_NEWLINE STREQUAL "ANYCRLF")
        SET(NEWLINE "-2")
ENDIF(PCRE_NEWLINE STREQUAL "ANYCRLF")

IF(NEWLINE STREQUAL "")
        MESSAGE(FATAL_ERROR "The PCRE_NEWLINE variable must be set to one of the following values: \"LF\", \"CR\", \"CRLF\", \"ANY\", \"ANYCRLF\".")
ENDIF(NEWLINE STREQUAL "")

# Output files
CONFIGURE_FILE(config.h.in
               ${PROJECT_BINARY_DIR}/src/pcre/config.h
               @ONLY)

# Source code

SET(PCRE_HEADERS ${PROJECT_BINARY_DIR}/src/pcre/config.h)

SET(PCRE_SOURCES
  pcre_byte_order.c
  pcre_chartables.c
  pcre_compile.c
  pcre_config.c
  pcre_dfa_exec.c
  pcre_exec.c
  pcre_fullinfo.c
  pcre_get.c
  pcre_globals.c
  pcre_jit_compile.c
  pcre_maketables.c
  pcre_newline.c
  pcre_ord2utf8.c
  pcre_refcount.c
  pcre_string_utils.c
  pcre_study.c
  pcre_tables.c
  pcre_ucd.c
  pcre_valid_utf8.c
  pcre_version.c
  pcre_xclass.c
)

SET(PCREPOSIX_HEADERS pcreposix.h)

SET(PCREPOSIX_SOURCES pcreposix.c)

# Fix static compilation with MSVC: https://bugs.exim.org/show_bug.cgi?id=1681
# This code was taken from the CMake wiki, not from WebM.

# Build setup

ADD_DEFINITIONS(-DHAVE_CONFIG_H)

IF(MSVC)
        ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS)
ENDIF(MSVC)

SET(CMAKE_INCLUDE_CURRENT_DIR 1)

SET(targets)

# Libraries
# pcre
INCLUDE_DIRECTORIES(${PROJECT_BINARY_DIR}/src/pcre)
ADD_LIBRARY(pcre OBJECT ${PCRE_HEADERS} ${PCRE_SOURCES} ${PCREPOSIX_SOURCES})

# end CMakeLists.txt
