AC_INIT([Icecast], [2.4.99.2], [icecast@xiph.org])

AC_PREREQ([2.54])

AC_CONFIG_SRCDIR([src/main.c])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([build-aux])

AC_PROG_CC

LT_INIT

AX_CHECK_COMPILE_FLAG([-std=c99], [
  AX_APPEND_FLAG([-std=c99])
], [
  AC_MSG_WARN([Compiler does not accept -std=c99 flag!])
])

AC_PROG_CC_C99

AS_IF([test "${ac_cv_prog_cc_c99}" = "no"], [
  AC_MSG_ERROR([No C99 compiler found!])
])

dnl With clang, we want an error for unknown flags instead of just warn
AX_APPEND_COMPILE_FLAGS([-Werror=unknown-warning-option -Werror=invalid-command-line-argument])

AX_APPEND_COMPILE_FLAGS([-Wall -Wextra -Wno-unused-parameter])

AC_SYS_LARGEFILE
AC_DEFINE([_GNU_SOURCE], 1, [Define to include GNU extensions to POSIX])

dnl Set build/host to default values
AC_CANONICAL_HOST
AC_CANONICAL_BUILD

dnl Check for which host we are compiling
AS_CASE("${host_os}",
  [linux*], [SYS="linux"],
  [darwin*], [SYS="darwin"],
  [SYS="${host_os}"]
)

AM_INIT_AUTOMAKE([tar-ustar foreign dist-zip subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AM_MAINTAINER_MODE([enable])

dnl Sanitizer flags

AC_ARG_WITH([sanitizer],
    [AS_HELP_STRING([--with-sanitizer=(address/memory/undefined/thread)],
        [build with sanitizer flags (default disabled)])],
     [],
     [with_sanitizer=no])

AS_VAR_IF(with_sanitizer, no, [], [
    AX_CHECK_COMPILE_FLAG([-fsanitize=${with_sanitizer}], [
        AX_APPEND_FLAG([-fsanitize=${with_sanitizer}])
        AX_APPEND_FLAG([-fsanitize=${with_sanitizer}], [LDFLAGS])
    ], [
        AC_MSG_ERROR(["-fsanitize=${with_sanitizer} not supported!"])
    ])
    AX_APPEND_FLAG([-g])

    AS_CASE("${with_sanitizer}",
      [address], [
        AX_APPEND_COMPILE_FLAGS([-fsanitize-address-use-after-scope -fno-omit-frame-pointer -fsanitize=pointer-compare -fsanitize=pointer-subtract])
      ],
      [memory], [
        AX_APPEND_COMPILE_FLAGS([-fPIE -pie])
      ],
      [thread], [
        AX_APPEND_COMPILE_FLAGS([-fPIE -pie])
      ],
      []
    )
])

dnl Check for attributes
AX_GCC_TYPE_ATTRIBUTE([transparent_union])

dnl Checks for header files.
AC_HEADER_ASSERT
AC_HEADER_STDC
AC_HEADER_TIME

AC_CHECK_HEADERS([stdint.h inttypes.h], [
  ice_found_int_headers="yes";
  break;
])

AS_IF([test "$ice_found_int_headers" != "yes"], [
  AC_MSG_ERROR([Unable to find the standard integers headers])
])

AC_CHECK_HEADERS([sys/types.h])
AC_CHECK_HEADERS([sys/timeb.h])
AC_CHECK_HEADERS([sys/socket.h])
AC_CHECK_HEADERS([pwd.h grp.h])

dnl Check for functions
AC_FUNC_FORK
AC_FUNC_CHOWN

AC_CHECK_FUNCS([setuid])
AC_CHECK_FUNCS([chroot])
AC_CHECK_FUNCS([strcasestr])
AC_CHECK_FUNCS([uname])
AC_CHECK_FUNCS([setenv])
AC_CHECK_FUNCS([setresuid])
AC_CHECK_FUNCS([setresgid])
AC_CHECK_FUNCS([localtime_r])

dnl Do not check for poll on Darwin, it is broken in some versions
AS_IF([test "${SYS}" != "darwin"], [
  AC_CHECK_FUNCS([poll])
])

dnl Checks for types and typedefs
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UID_T

dnl Checks for required libraries

dnl
dnl igloo
dnl
PKG_CHECK_MODULES([IGLOO], [igloo], [], [
  AC_MSG_ERROR([${IGLOO_PKG_ERRORS}. igloo is required.])
])

CFLAGS="${CFLAGS} ${IGLOO_CFLAGS}"
LIBS="${LIBS} ${IGLOO_LIBS}"

dnl
dnl libxml2
dnl
PKG_CHECK_MODULES([LIBXML2], [libxml-2.0], [], [
  AC_MSG_ERROR([${LIBXML2_PKG_ERRORS}. libxml2 is required.])
])

CFLAGS="${CFLAGS} ${LIBXML2_CFLAGS}"
LIBS="${LIBS} ${LIBXML2_LIBS}"


dnl
dnl libxslt
dnl
PKG_CHECK_MODULES([LIBXSLT], [libxslt], [], [
  AC_MSG_ERROR([${LIBXSLT_PKG_ERRORS}. libxslt is required.])
])

CFLAGS="${CFLAGS} ${LIBXSLT_CFLAGS}"
LIBS="${LIBS} ${LIBXSLT_LIBS}"


dnl
dnl libvorbis
dnl
PKG_CHECK_MODULES([VORBIS], [vorbis >= 1.0], [], [
  AC_MSG_ERROR([${VORBIS_PKG_ERRORS}. Must have libvorbis v1.0 or above installed.])
])

CFLAGS="${CFLAGS} ${VORBIS_CFLAGS}"
LIBS="${LIBS} ${VORBIS_LIBS}"


dnl Checks for optional libraries

dnl
dnl libogg
dnl
PKG_HAVE_WITH_MODULES([OGG], [ogg], [
  CFLAGS="${CFLAGS} ${OGG_CFLAGS}"
  LIBS="${LIBS} ${OGG_LIBS}"
])

dnl
dnl libtheora
dnl
PKG_HAVE_WITH_MODULES([THEORA], [theora], [
  CFLAGS="${CFLAGS} ${THEORA_CFLAGS}"
  LIBS="${LIBS} ${THEORA_LIBS}"
])

dnl
dnl libspeex
dnl
PKG_HAVE_WITH_MODULES([SPEEX], [speex], [
  CFLAGS="${CFLAGS} ${SPEEX_CFLAGS}"
  LIBS="${LIBS} ${SPEEX_LIBS}"
])

dnl
dnl libcurl
dnl
PKG_HAVE_WITH_MODULES([CURL], [libcurl], [
  CFLAGS="${CFLAGS} ${CURL_CFLAGS}"
  LIBS="${LIBS} ${CURL_LIBS}"
])

dnl
dnl openssl
dnl
PKG_HAVE_WITH_MODULES([OPENSSL], [openssl], [
  CFLAGS="${CFLAGS} ${OPENSSL_CFLAGS}"
  LIBS="${LIBS} ${OPENSSL_LIBS}"
])

dnl Check for library-specific functions
AC_CHECK_FUNCS([xsltSaveResultToString])

dnl we still use format_kate as it doesn't need libkate to work
#ICECAST_OPTIONAL="$ICECAST_OPTIONAL format_kate.o"

ACX_PTHREAD([], [AC_MSG_ERROR([POSIX threads missing])])

CFLAGS="${CFLAGS} ${PTHREAD_CFLAGS}"
CPPFLAGS="${CPPFLAGS} ${PTHREAD_CPPFLAGS}"
LIBS="${LIBS} ${PTHREAD_LIBS}"

dnl Feature enable/disable arguments

AC_ARG_ENABLE([yp],
  AS_HELP_STRING([--enable-yp],
    [enable yellowpage directory listing support (default: auto)])
)

AS_IF([test "x$enable_yp" != "xno"], [
  AS_IF([test "x$have_curl" != "xyes"], [
    AS_IF([test "x$enable_yp" == "xyes"], [
      AC_MSG_ERROR([cURL is required for YP support])
    ])
    enable_yp="no"
  ], [
    AC_DEFINE([USE_YP], 1, [Define to compile in YP support code])
    enable_yp="yes"
  ])
])

AM_CONDITIONAL([ENABLE_YP],
               [test "x$enable_yp" = "xyes"])


AC_ARG_ENABLE([client-tests],
  AS_HELP_STRING([--enable-client-tests],
    [enable client tests module (default: disabled)])
)

AS_IF([test "x$enable_client_tests" == "xyes"], [
  AC_DEFINE([ENABLE_MODULE_CLIENT_TESTS], 1, [Define to compile client test module])
], [enable_client_tests="no"])

AM_CONDITIONAL([ENABLE_MODULE_CLIENT_TESTS],
               [test "x$enable_client_tests" = "xyes"])

AC_ARG_WITH([default-config],
  AS_HELP_STRING([--with-default-config=PATH],
    [Sets default Icecast configuration file (used when no configuration file is given)]),
  [], [with_default_config=no]
)

AS_IF([test "$with_default_config" != "no"], [

  AS_IF([test "$with_default_config" = "yes"], [
    AC_MSG_ERROR([You need to supply a path as value for --with-default-config])
  ])

  AC_DEFINE_UNQUOTED([ICECAST_DEFAULT_CONFIG], ["$with_default_config"], [Define to default config file path])
  
])

AC_CONFIG_HEADERS([config.h])

AC_CONFIG_FILES([
  Makefile
  conf/Makefile
  src/Makefile
  doc/Makefile
  web/Makefile
  admin/Makefile
  win32/Makefile
  examples/Makefile
  tests/Makefile
])

AC_OUTPUT

AS_ECHO(["
Icecast configuration
---------------------
Version        : ${VERSION}
cURL           : ${have_curl}
TLS (openSSL)  : ${have_openssl}

Format/Codec support:
  Ogg          : ${have_ogg}
  Theora       : ${have_theora}
  Speex        : ${have_speex}

Features:
  YP support   : ${enable_yp}
  Client tests : ${enable_client_tests}"])