php-src/ext/gettext/config.m4

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PHP_ARG_WITH(gettext,for GNU gettext support,
[  --with-gettext[=DIR]    Include GNU gettext support])

if test "$PHP_GETTEXT" != "no"; then
  for i in $PHP_GETTEXT /usr/local /usr; do
    test -r $i/include/libintl.h && GETTEXT_DIR=$i && break
  done

  if test -z "$GETTEXT_DIR"; then
    AC_MSG_ERROR(Cannot locate header file libintl.h)
  fi

  GETTEXT_LIBDIR=$GETTEXT_DIR/$PHP_LIBDIR
  GETTEXT_INCDIR=$GETTEXT_DIR/include
  
  O_LDFLAGS=$LDFLAGS
  LDFLAGS="$LDFLAGS -L$GETTEXT_LIBDIR"
  AC_CHECK_LIB(intl, bindtextdomain, [
	GETTEXT_LIBS=intl
	GETTEXT_CHECK_IN_LIB=intl
	],
	AC_CHECK_LIB(c, bindtextdomain, [
		GETTEXT_LIBS=
		GETTEXT_CHECK_IN_LIB=c
	],[
		AC_MSG_ERROR(Unable to find required gettext library)
	])
  )
  LDFLAGS=$O_LDFLAGS

  AC_DEFINE(HAVE_LIBINTL,1,[ ])
  PHP_NEW_EXTENSION(gettext, gettext.c, $ext_shared)
  PHP_SUBST(GETTEXT_SHARED_LIBADD)

  if test -n "$GETTEXT_LIBS"; then
    PHP_ADD_LIBRARY_WITH_PATH($GETTEXT_LIBS, $GETTEXT_LIBDIR, GETTEXT_SHARED_LIBADD)
  fi

  PHP_ADD_INCLUDE($GETTEXT_INCDIR)

  AC_CHECK_LIB($GETTEXT_CHECK_IN_LIB, ngettext,  [AC_DEFINE(HAVE_NGETTEXT, 1, [ ])])
  AC_CHECK_LIB($GETTEXT_CHECK_IN_LIB, dngettext,  [AC_DEFINE(HAVE_DNGETTEXT, 1, [ ])])
  AC_CHECK_LIB($GETTEXT_CHECK_IN_LIB, dcngettext,  [AC_DEFINE(HAVE_DCNGETTEXT, 1, [ ])])
  AC_CHECK_LIB($GETTEXT_CHECK_IN_LIB, bind_textdomain_codeset,  [AC_DEFINE(HAVE_BIND_TEXTDOMAIN_CODESET, 1, [ ])])
  
fi