+dnl Copyright (C) 2012 Vincent Torri <vincent dot torri at gmail dot com>
+dnl This code is public domain and can be freely used or copied.
+
+dnl Macros that check functions availability for the EFL:
+
+dnl dirfd
+dnl dladdr
+dnl dlopen
+dnl fnmatch
+dnl iconv
+dnl setxattr (an al.)
+dnl shm_open
+
+
+dnl _EFL_CHECK_FUNC_DIRFD is for internal use
+dnl _EFL_CHECK_FUNC_DIRFD(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_DIRFD],
+[
+AC_LINK_IFELSE(
+ [
+ AC_LANG_PROGRAM(
+ [[
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+#endif
+ ]],
+ [[
+int main(void)
+{
+ DIR *dirp;
+ return dirfd(dirp);
+}
+ ]])
+ ],
+ [_efl_have_fct="yes"],
+ [_efl_have_fct="no"])
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+])
+
+dnl _EFL_CHECK_FUNC_DLADDR_PRIV is for internal use
+dnl _EFL_CHECK_FUNC_DLADDR_PRIV(EFL, LIB, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_DLADDR_PRIV],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+LIBS_save="${LIBS}"
+LIBS="${LIBS} $2"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#define _GNU_SOURCE
+#include <dlfcn.h>
+ ]],
+ [[
+int res = dladdr(0, 0);
+ ]])],
+ [
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} $2"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} $2"
+ _efl_have_fct="yes"
+ ],
+ [_efl_have_fct="no"])
+
+LIBS="${LIBS_save}"
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$3], [$4])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_DLADDR is for internal use
+dnl _EFL_CHECK_FUNC_DLADDR(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_DLADDR],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+case "$host_os" in
+ mingw*)
+ _efl_have_fct="yes"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} -ldl"
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} -ldl"
+ ;;
+ *)
+ _efl_have_fct="no"
+
+dnl Check is dladdr is in libc
+ _EFL_CHECK_FUNC_DLADDR_PRIV([$1], [], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+
+dnl Check is dlopen is in libdl
+ if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_DLADDR_PRIV([$1], [-ldl], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+ fi
+ ;;
+esac
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_DLOPEN_PRIV is for internal use
+dnl _EFL_CHECK_FUNC_DLOPEN_PRIV(EFL, LIB, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_DLOPEN_PRIV],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+LIBS_save="${LIBS}"
+LIBS="${LIBS} $2"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <dlfcn.h>
+ ]],
+ [[
+void *h = dlopen(0, 0);
+ ]])],
+ [
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} $2"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} $2"
+ _efl_have_fct="yes"
+ ],
+ [_efl_have_fct="no"])
+
+LIBS="${LIBS_save}"
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$3], [$4])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_DLOPEN is for internal use
+dnl _EFL_CHECK_FUNC_DLOPEN(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_DLOPEN],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+case "$host_os" in
+ mingw*)
+ _efl_have_fct="yes"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} -ldl"
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} -ldl"
+ ;;
+ *)
+ _efl_have_fct="no"
+
+dnl Check is dlopen is in libc
+ _EFL_CHECK_FUNC_DLOPEN_PRIV([$1], [], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+
+dnl Check is dlopen is in libdl
+ if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_DLOPEN_PRIV([$1], [-ldl], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+ fi
+ ;;
+esac
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_FNMATCH_PRIV is for internal use
+dnl _EFL_CHECK_FUNC_FNMATCH_PRIV(EFL, LIB, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_FNMATCH_PRIV],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+LIBS_save="${LIBS}"
+LIBS="${LIBS} $2"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <stdlib.h>
+#include <fnmatch.h>
+ ]],
+ [[
+int g = fnmatch(NULL, NULL, 0);
+ ]])],
+ [
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} $2"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} $2"
+ _efl_have_fct="yes"
+ ],
+ [_efl_have_fct="no"])
+
+LIBS="${LIBS_save}"
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$3], [$4])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_FNMATCH is for internal use
+dnl _EFL_CHECK_FUNC_FNMATCH(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_FNMATCH],
+[
+case "$host_os" in
+ mingw*)
+ _efl_have_fct="yes"
+ ;;
+ *)
+dnl Check is fnmatch is in libc
+ _EFL_CHECK_FUNC_FNMATCH_PRIV([$1], [], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+
+dnl Check is fnmatch is in libfnmatch
+ if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_FNMATCH_PRIV([$1], [-lfnmatch], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+ fi
+
+dnl Check is fnmatch is in libiberty
+ if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_FNMATCH_PRIV([$1], [-liberty], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+ fi
+ ;;
+esac
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+])
+
+dnl _EFL_CHECK_FUNC_ICONV_PRIV is for internal use
+dnl _EFL_CHECK_FUNC_ICONV_PRIV(EFL, LIB, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_ICONV_PRIV],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+LIBS_save="${LIBS}"
+LIBS="${LIBS} $2"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <stdlib.h>
+#include <iconv.h>
+ ]],
+ [[
+iconv_t ic;
+size_t count = iconv(ic, NULL, NULL, NULL, NULL);
+ ]])],
+ [
+ m4_defn([UPEFL])[]_LIBS="${m4_defn([UPEFL])[]_LIBS} $2"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} $2"
+ _efl_have_fct="yes"
+ ],
+ [_efl_have_fct="no"])
+
+LIBS="${LIBS_save}"
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$3], [$4])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_ICONV is for internal use
+dnl _EFL_CHECK_FUNC_ICONV(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_ICONV],
+[
+AC_ARG_WITH([iconv-link],
+ AC_HELP_STRING([--with-iconv-link=ICONV_LINK], [explicitly specify an iconv link option]),
+ [
+ _efl_have_fct="yes"
+ iconv_libs=${withval}
+ ],
+ [_efl_have_fct="no"])
+
+AC_MSG_CHECKING([for explicit iconv link options])
+if test "x${iconv_libs}" = "x" ; then
+ AC_MSG_RESULT([no explicit iconv link option])
+else
+ AC_MSG_RESULT([${iconv_libs}])
+fi
+
+dnl Check is iconv is in libc
+if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_ICONV_PRIV([$1], [], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+fi
+
+dnl Check is iconv is in libiconv
+if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_ICONV_PRIV([$1], [-liconv], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+fi
+
+dnl Check is iconv is in libiconv_plug
+if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_ICONV_PRIV([$1], [-liconv_plug], [_efl_have_fct="yes"], [_efl_have_fct="no"])
+fi
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+])
+
+dnl _EFL_CHECK_FUNC_SETXATTR is for internal use
+dnl _EFL_CHECK_FUNC_SETXATTR(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_SETXATTR],
+[
+AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/xattr.h>
+ ]],
+ [[
+size_t tmp = listxattr("/", NULL, 0);
+tmp = getxattr("/", "user.ethumb.md5", NULL, 0);
+setxattr("/", "user.ethumb.md5", NULL, 0, 0);
+ ]])],
+ [_efl_have_fct="yes"],
+ [_efl_have_fct="no"])
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+])
+
+dnl _EFL_CHECK_FUNC_SHM_OPEN_PRIV is for internal use
+dnl _EFL_CHECK_FUNC_SHM_OPEN_PRIV(EFL, LIB, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_SHM_OPEN_PRIV],
+[
+m4_pushdef([UPEFL], m4_translit([$1], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWNEFL], m4_translit([$1], [-A-Z], [_a-z]))dnl
+
+LIBS_save="${LIBS}"
+LIBS="${LIBS} $2"
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <sys/mman.h>
+#include <sys/stat.h> /* For mode constants */
+#include <fcntl.h> /* For O_* constants */
+ ]],
+ [[
+int fd;
+
+fd = shm_open("/dev/null", O_RDONLY, S_IRWXU | S_IRWXG | S_IRWXO);
+ ]])],
+ [
+ m4_defn([UPEFL])[]_LIBS="$m4_defn([UPEFL])[]_LIBS $2"
+ requirements_libs_[]m4_defn([DOWNEFL])="${requirements_libs_[]m4_defn([DOWNEFL])} $2"
+ _efl_have_fct="yes"
+ ],
+ [_efl_have_fct="no"])
+
+LIBS="${LIBS_save}"
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$3], [$4])
+
+m4_popdef([DOWNEFL])
+m4_popdef([UPEFL])
+])
+
+dnl _EFL_CHECK_FUNC_SHM_OPEN is for internal use
+dnl _EFL_CHECK_FUNC_SHM_OPEN(EFL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+
+AC_DEFUN([_EFL_CHECK_FUNC_SHM_OPEN],
+[
+_efl_have_fct="no"
+
+dnl Check is shm_open is in libc
+_EFL_CHECK_FUNC_SHM_OPEN_PRIV([$1], [],
+ [_efl_have_fct="yes"],
+ [_efl_have_fct="no"])
+
+dnl Check is shm_open is in librt
+if test "x${_efl_have_fct}" = "xno" ; then
+ _EFL_CHECK_FUNC_SHM_OPEN_PRIV([$1], [-lrt],
+ [_efl_have_fct="yes"],
+ [_efl_have_fct="no"])
+fi
+
+AS_IF([test "x${_efl_have_fct}" = "xyes"], [$2], [$3])
+])
+
+dnl Macro that checks function availability
+dnl
+dnl EFL_CHECK_FUNC(EFL, FUNCTION)
+dnl AC_DEFINE : EFL_HAVE_FUNCTION (FUNCTION being replaced by its value)
+dnl result in efl_func_function (function being replaced by its value)
+
+AC_DEFUN([EFL_CHECK_FUNC],
+[
+m4_pushdef([UP], m4_translit([$2], [-a-z], [_A-Z]))dnl
+m4_pushdef([DOWN], m4_translit([$2], [-A-Z], [_a-z]))dnl
+
+m4_default([_EFL_CHECK_FUNC_]m4_defn([UP]))($1, [have_fct="yes"], [have_fct="no"])
+
+if test "x$2" = "xsetxattr" ; then
+ AC_MSG_CHECKING([for extended attributes])
+else
+ AC_MSG_CHECKING([for ]m4_defn([DOWN]))
+fi
+
+AC_MSG_RESULT([${have_fct}])
+
+if test "x${have_fct}" = "xyes" ; then
+ if test "x$2" = "xsetxattr" ; then
+ AC_DEFINE([HAVE_XATTR], [1], [Define to 1 if you have the `listxattr', `setxattr' and `getxattr' functions.])
+ else
+ AC_DEFINE([HAVE_]m4_defn([UP]), [1], [Define to 1 if you have the `]m4_defn([DOWN])[' function.])
+ fi
+fi
+
+efl_func_[]m4_defn([DOWN])="${have_fct}"
+
+m4_popdef([DOWN])
+m4_popdef([UP])
+])
+
+dnl Macro that iterates over a sequence of space separated functions
+dnl and that calls EFL_CHECK_FUNC() for each of these functions
+dnl
+dnl EFL_CHECK_FUNCS(EFL, FUNCTIONS)
+
+AC_DEFUN([EFL_CHECK_FUNCS],
+[
+m4_foreach_w([fct], [$2], [EFL_CHECK_FUNC($1, m4_defn([fct]))])
+])