Copy libdyld error messages back from injection.

[cycript.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index a89979c83a2897fcd48ec0e408acd408dd9036f5..4c5d65cac8fde5c1c04d7e8f1da9c71386000c3e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,216 +1,289 @@
+dnl Cycript - Optimizing JavaScript Compiler/Runtime
+dnl Copyright (C) 2009-2013  Jay Freeman (saurik)
+
+dnl GNU General Public License, Version 3 {{{
+dnl
+dnl Cycript is free software: you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published
+dnl by the Free Software Foundation, either version 3 of the License,
+dnl or (at your option) any later version.
+dnl
+dnl Cycript is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
+dnl }}}
+

 AC_PREREQ([2.65])
 AC_INIT([Cycript], [0.9], [saurik@saurik.com], [cycript], [http://www.cycript.org/])
 AC_PREREQ([2.65])
 AC_INIT([Cycript], [0.9], [saurik@saurik.com], [cycript], [http://www.cycript.org/])

+AC_COPYRIGHT([Copyright (C) 2009-2012  Jay Freeman (saurik)])
+

 AC_CONFIG_SRCDIR([Console.cpp])
 AC_CONFIG_AUX_DIR([.])
 AC_CONFIG_SRCDIR([Console.cpp])
 AC_CONFIG_AUX_DIR([.])

+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_HEADERS([config.h])
+
+AM_INIT_AUTOMAKE([-Wall -Werror foreign])
+AM_MAINTAINER_MODE([disable])
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_OBJCXX
+
+AM_PROG_AR
+AC_PROG_INSTALL
+

 LT_INIT([disable-static])
 LT_INIT([disable-static])

+
+AC_LANG([C++])
+

 PKG_PROG_PKG_CONFIG([0.22])
 PKG_PROG_PKG_CONFIG([0.22])

-CHECK_GNU_MAKE
-AC_SUBST([GMAKE], [$_cv_gnu_make_command])
-AS_IF([test "x$GMAKE" = x], [AC_MSG_ERROR([You need GNU make])])
-AC_PATH_PROGS([_BASH], [bash])
-AS_IF([test "x$_BASH" = x], [AC_MSG_ERROR([You need GNU bash])])
-AC_PATH_PROGS([TIME], [time])
+
+AC_PATH_PROG([GIT], [git])
+AC_PATH_PROG([TIME], [time])
+
+dnl CY_CHECK_PROGS_VERSION {{{

 AC_DEFUN([CY_CHECK_PROGS_VERSION], [
 AC_DEFUN([CY_CHECK_PROGS_VERSION], [

-       AC_MSG_CHECKING(for ]$2[ >= ]$5[)
-       AC_PATH_PROGS_FEATURE_CHECK(]$1[, ]$3[,
-               AS_VERSION_COMPARE(`$ac_path_]$1[ ]$4[`, ]$5[, ,
-                       ac_cv_path_]$1[=$ac_path_]$1[
-               ,
-                       ac_cv_path_]$1[=$ac_path_]$1[
-               )
-       ,
-               AC_MSG_RESULT(no)
-               AC_MSG_ERROR(You need ]$2[ ]$5[ or greater)
-       )
-       AC_SUBST(]$1[, $ac_cv_path_]$1[)
-       AC_MSG_RESULT($]$1[)
-])
-AC_ARG_VAR([BISON], [GNU Project parser generator (yacc replacement)])
-CY_CHECK_PROGS_VERSION([BISON], [bison], [bison],
-       [-V | $SED -e '1 s/^bison (GNU Bison) \(.*\)$/\1/p;d'], [2.3])
-AC_ARG_VAR([FLEX], [the fast lexical analyser generator])
-CY_CHECK_PROGS_VERSION([FLEX], [flex], [flex],
-       [--version | $SED -e '1 s/^.* \(@<:@0-9.@:>@*\)$/\1/p;d'], [2.5.33])
-AC_ARG_VAR([GPERF], [perfect hash function generator])
-CY_CHECK_PROGS_VERSION([GPERF], [gperf], [gperf],
-       [--version | $SED -e '1 s/^.* \(@<:@0-9.@:>@*\)$/\1/p;d'], [3.0.3])
-AC_PROG_INSTALL
-AC_MSG_CHECKING([for GNU tar >=1.19])
-AC_PATH_PROGS_FEATURE_CHECK([GNUTAR], [tar gtar gnutar], [
-       AS_IF([test "x`$ac_path_GNUTAR --version | $SED -e '1 s/^tar (GNU tar)/&/p;d'`" != x], [
-               AS_VERSION_COMPARE([`$ac_path_GNUTAR --version | $SED -e '1 s/^tar (GNU tar) \(.*\)$/\1/p;d'`], [1.19], , [
-                       ac_cv_path_GNUTAR=$ac_path_GNUTAR
-               ], [
-                       ac_cv_path_GNUTAR=$ac_path_GNUTAR
-               ])
-       ])
+    AC_ARG_VAR(]$1[, ]$3[)
+
+    AC_MSG_CHECKING(for ]$2[ >= ]$5[)
+    AC_PATH_PROGS_FEATURE_CHECK(]$1[, ]$2[,
+        AS_VAR_SET(version, [`$ac_path_]$1[ ]$4[`])
+        AS_VAR_IF(version, [], ,
+            AS_VERSION_COMPARE($version, ]$5[, ,
+                ac_cv_path_]$1[=$ac_path_]$1[,
+                ac_cv_path_]$1[=$ac_path_]$1[))
+    , AC_MSG_RESULT(no))
+
+    AS_IF([true], [
+        AC_SUBST(]$1[, $ac_cv_path_]$1[)
+        AC_MSG_RESULT($]$1[)
+    ], AS_IF([true], [
+        AC_MSG_ERROR(You need ]$2[ ]$5[ or greater)
+    ], [
+        AC_SUBST(]$1[, [:])
+        AC_MSG_RESULT([no])
+    ]))
+]) dnl }}}
+
+CY_CHECK_PROGS_VERSION([BISON], [bison], [GNU Project parser generator (yacc replacement)],
+    [-V | $SED -e '1 s/^bison (GNU Bison) \(.*\)$/\1/p;d'], [2.3])
+CY_CHECK_PROGS_VERSION([FLEX], [flex], [the fast lexical analyser generator],
+    [--version | $SED -e '1 s/^@<:@^0-9.@:>@* \(@<:@0-9.@:>@*\).*$/\1/p;d'], [2.5.33])
+CY_CHECK_PROGS_VERSION([GPERF], [gperf], [perfect hash function generator],
+    [--version | $SED -e '1 s/^.* \(@<:@0-9.@:>@*\)$/\1/p;d'], [3.0.3])
+CY_CHECK_PROGS_VERSION([GNUTAR], [tar gtar gnutar], [a very sticky lump of files],
+    [--version | $SED -e '1 s/^tar (GNU tar) \(.*\)$/\1/p;d'], [1.19])
+
+AC_MSG_CHECKING([bison for %code{}])
+echo '%code{}%%_:' >conftest.y
+if $BISON conftest.y -o/dev/null 2>/dev/null; then
+    AC_LIB_APPENDTOVAR([CY_FILTERS], [Bison24])
+    AC_MSG_RESULT([yes])
+else
+    AC_LIB_APPENDTOVAR([CY_FILTERS], [Bison23])
+    AC_MSG_RESULT([no])
+fi
+
+rm -f conftest.y
+AC_SUBST([CY_FILTERS])
+
+dnl CY_TRY {{{
+AC_DEFUN([CY_SUCCESS], [cy_good=1])
+AC_DEFUN([CY_FAILURE], [cy_good=0])
+
+AC_DEFUN([CY_TRY], [
+    cy_save=$]$1[
+        AC_LIB_APPENDTOVAR(]$1[, ]$2[)
+        ]$3[
+    ]$1[=$cy_save
+    AS_IF([test "x$cy_good" = x1], ]$4[, ]$5[)
+]) dnl }}}
+
+AC_DEFUN([CY_TEST_FLAG_], [
+    AC_LANG_PUSH(]$2[)
+    AC_MSG_CHECKING([for ]]$4[[ ]]$1[)
+    CY_TRY(]$3[, $1, [
+        AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
+            [CY_SUCCESS], [CY_FAILURE])
+    ], [
+        AC_MSG_RESULT([yes])
+        AC_LIB_APPENDTOVAR(]$3[, ]$1[)
+    ], [AC_MSG_RESULT([no])])
+    AC_LANG_POP(]$2[)

 ])
 ])

-AS_IF([test "x$ac_cv_path_GNUTAR" != x], [
-       AC_SUBST([GNUTAR], [$ac_cv_path_GNUTAR])
-       AC_MSG_RESULT([$GNUTAR])
-], [
-       AC_SUBST([GNUTAR], [:])
-       AC_MSG_RESULT([no])
-])
-AC_CHECK_PROGS([SVN], [svn])
-AC_CHECK_PROGS([SVNVERSION], [svnversion])
-AC_PROG_CXX
-AC_PROG_OBJCXX
-AC_DEFUN([CY_CHECK_UNIVERSAL], [
-       AC_MSG_CHECKING([for universal binary support])
-       AS_CASE([$host_vendor], [apple], [
-               AS_CASE([$host_cpu], [i386|x86_64], [
-                       for cy_arch in i386 x86_64; do
-                               cy_save_CXXFLAGS=$CXXFLAGS
-                               AC_LIB_APPENDTOVAR([CXXFLAGS], ["-arch $cy_arch"])
-                               AC_TRY_LINK([], [], [
-                                       AC_LIB_APPENDTOVAR([cy_arches], [$cy_arch])
-                                       AC_LIB_APPENDTOVAR([CFLAGS], ["-arch $cy_arch"])
-                                       AC_LIB_APPENDTOVAR([LDFLAGS], ["-arch $cy_arch"])
-                                       AC_LIB_APPENDTOVAR([OBJCXXFLAGS], ["-arch $cy_arch"])
-                               ], [
-                                       CXXFLAGS=$cy_save_CXXFLAGS
-                               ])
-                       done
-               ])
-       ])
-       AC_MSG_RESULT([${cy_arches-no}])
+
+AC_DEFUN([CY_TEST_FLAG], [
+    CY_TEST_FLAG_(]$1[, [C], [CFLAGS], [cc])
+    CY_TEST_FLAG_(]$1[, [C++], [CXXFLAGS], [c++])
+    CY_TEST_FLAG_(]$1[, [Objective C++], [OBJCXXFLAGS], [c++ -ObjC])

 ])
 ])

-AC_ARG_ENABLE([universal-binary], [AS_HELP_STRING(
-       [--disable-universal-binary],
-       [do not build with universal binary support on Darwin]
-)], [
-       AS_CASE([$enableval], [no], [], [CY_CHECK_UNIVERSAL])
-], [CY_CHECK_UNIVERSAL])
-AC_ARG_WITH([frameworks], [AS_HELP_STRING(
-       [--with-frameworks=DIRS],
-       [add to DIRS (space separated) to the Darwin include path for frameworks with -F]
-)], [
-       for cy_framework in $withval; do
-               AC_LIB_APPENDTOVAR([CFLAGS], [-F$cy_framework])
-               AC_LIB_APPENDTOVAR([CXXFLAGS], [-F$cy_framework])
-               AC_LIB_APPENDTOVAR([OBJCCXXFLAGS], [-F$cy_framework])
-       done
+
+AX_CFLAGS_WARN_ALL
+AX_CXXFLAGS_WARN_ALL
+AX_FLAGS_WARN_ALL
+
+CY_TEST_FLAG([-Werror])
+
+dnl XXX: this is used to support GNU Objective-C struct objc_method
+CY_TEST_FLAG([-Wno-deprecated-declarations])
+
+CY_TEST_FLAG([-Wno-dangling-else])
+CY_TEST_FLAG([-Wno-overloaded-virtual])
+CY_TEST_FLAG([-Wno-parentheses])
+CY_TEST_FLAG([-Wno-unneeded-internal-declaration])
+
+AC_DEFUN([CY_LT_LIB], [
+    cy_save=$LIBS
+    LIBS=
+    ]$2[
+    ]$1[=$LIBS
+    LIBS=$cy_save
+    AC_SUBST(]$1[)

 ])
 ])

-AC_LANG([C++])
-APR_FIND_APR([], [], [1], [1])
-AS_CASE([$apr_found], [yes], [
-       AC_LIB_APPENDTOVAR([CPPFLAGS], [`$apr_config --includes`])
-       AC_SUBST([LTLIBAPR], [`$apr_config --link-libtool`])
-], [AC_MSG_ERROR([You need apr])])
+
+dnl -arch * {{{
+for cy_arch in ppc ppc64 i386 x86_64 armv6 arm64; do
+    AC_MSG_CHECKING([for -arch $cy_arch])
+    CY_TRY([CXXFLAGS], ["-arch $cy_arch"], [
+        AC_TRY_LINK([], [], [CY_SUCCESS], [CY_FAILURE])
+    ], [
+        AC_MSG_RESULT([yes])
+        AC_LIB_APPENDTOVAR([CY_ARCH], ["-arch $cy_arch"])
+    ], [AC_MSG_RESULT([no])])
+done
+AC_SUBST([CY_ARCH])
+dnl }}}
+
+dnl --enable-javascript {{{

 AC_DEFUN([CY_CHECK_JAVASCRIPTCORE], [
 AC_DEFUN([CY_CHECK_JAVASCRIPTCORE], [

-       PKG_CHECK_MODULES([WEBKIT], [webkit-1.0], [
-               CY_EXECUTE=1
-               AC_LIB_APPENDTOVAR([CXXFLAGS], [`$PKG_CONFIG --cflags webkit-1.0`])
-               AC_LIB_APPENDTOVAR([LIBS], [`$PKG_CONFIG --libs webkit-1.0`])
-       ], [
-               PKG_CHECK_MODULES([WEBKIT], [WebKitGtk], [
-                       CY_EXECUTE=1
-                       AC_LIB_APPENDTOVAR([CXXFLAGS], [`$PKG_CONFIG --cflags WebKitGtk`])
-                       AC_LIB_APPENDTOVAR([LIBS], [`$PKG_CONFIG --libs WebKitGtk`])
-               ], [
-                       AC_CHECK_FRAMEWORK([JavaScriptCore], [
-                               #include <JavaScriptCore/JSBase.h>
-                       ], [JSEvaluateScript(0, 0, 0, 0, 0, 0);], [CY_EXECUTE=1])
-               ])
-       ])
+    CY_LT_LIB([LTJAVASCRIPTCORE], [AC_CHECK_FRAMEWORK([JavaScriptCore], [
+        #include <JavaScriptCore/JSBase.h>
+    ], [
+        JSEvaluateScript(0, 0, 0, 0, 0, 0);
+    ], [
+        AC_SUBST([CY_EXECUTE], [1])
+    ], [
+        for cy_webkit_pkg in "webkit-1.0" "WebKitGtk"; do
+            PKG_CHECK_MODULES([WEBKIT], [$cy_webkit_pkg], [
+                AC_SUBST([CY_EXECUTE], [1])
+                AC_LIB_APPENDTOVAR([CPPFLAGS], [`$PKG_CONFIG --cflags $cy_webkit_pkg`])
+                AC_LIB_APPENDTOVAR([LIBS], [`$PKG_CONFIG --libs $cy_webkit_pkg`])
+            ], [:]); if test "x$CY_EXECUTE" = x1; then break; fi
+        done
+    ])])

 ])
 ])

+

 AC_DEFUN([CY_CHECK_JAVASCRIPT], [
 AC_DEFUN([CY_CHECK_JAVASCRIPT], [

-       CY_CHECK_JAVASCRIPTCORE
-])
+    CY_CHECK_JAVASCRIPTCORE])
+

 AC_ARG_ENABLE([javascript], [AS_HELP_STRING(
 AC_ARG_ENABLE([javascript], [AS_HELP_STRING(

-       [--enable-javascript@<:@=ENGINE@:>@],
-       [use a JavaScript runtime (currently the only available option for ENGINE is JavaScriptCore) @<:@default=yes@:>@]
+    [--enable-javascript@<:@=ENGINE@:>@],
+    [use a JavaScript runtime (currently the only available option for ENGINE is JavaScriptCore) @<:@default=yes@:>@]

 )], [
 )], [

-       AS_CASE([$enableval], [yes], [CY_CHECK_JAVASCRIPT], [no], [
-               AC_SUBST([CY_EXECUTE], [0])
-       ], [JavaScriptCore], [
-               CY_CHECK_JAVASCRIPTCORE
-       ], [AC_MSG_ERROR([Unknown JavaScript engine: $enableval])])
+    AS_CASE([$enableval],
+        [yes], [
+            CY_CHECK_JAVASCRIPT],
+        [no], [
+            AC_SUBST([CY_EXECUTE], [0])],
+        [JavaScriptCore], [
+            CY_CHECK_JAVASCRIPTCORE],
+        [AC_MSG_ERROR([Unknown JavaScript engine: $enableval])])

 ], [CY_CHECK_JAVASCRIPT])
 ], [CY_CHECK_JAVASCRIPT])

-AC_DEFUN([CY_CHECK_PKG_CONFIG_LIBFFI], [
-       PKG_CHECK_MODULES([LIBFFI], [libffi], [
-               AC_LIB_APPENDTOVAR([CXXFLAGS], [`$PKG_CONFIG --cflags libffi`])
-               AC_LIB_APPENDTOVAR([LIBS], [`$PKG_CONFIG --libs libffi`])
-       ], [
-               AC_MSG_ERROR([You need libffi])
-       ])
+dnl }}}
+
+AC_ARG_ENABLE([console], AS_HELP_STRING([--disable-console], [disable console]))
+AM_CONDITIONAL([CY_CONSOLE], [test "x$enable_console" != "xno"])
+
+AM_COND_IF([CY_CONSOLE], [
+dnl APR_FIND_APR {{{
+AS_IF([test "x$LTLIBAPR" != x], [
+    AC_SUBST([LTLIBAPR])
+], [
+    APR_FIND_APR([], [], [1], [1])
+AS_CASE([$apr_found], [yes], [
+    AC_LIB_APPENDTOVAR([CPPFLAGS], [`$apr_config --includes`])
+    AC_LIB_APPENDTOVAR([LTLIBAPR], [`$apr_config --link-libtool`])
+    AC_SUBST([LTLIBAPR])
+], [
+    AC_MSG_ERROR([missing "libapr"])
+])])
+dnl }}}

 ])
 ])

+
+AC_DEFUN([CY_CHECK_PKG_CONFIG_LIBFFI], [
+    PKG_CHECK_MODULES([LIBFFI], [libffi], [
+        AC_LIB_APPENDTOVAR([CPPFLAGS], [`$PKG_CONFIG --cflags libffi`])
+        AC_LIB_APPENDTOVAR([LIBS], [`$PKG_CONFIG --libs libffi`])
+    ], [AC_MSG_ERROR([missing "libffi"])])])
+
+AM_CONDITIONAL([CY_EXECUTE], [test "x$CY_EXECUTE" = x1])
+

 AS_CASE([$CY_EXECUTE], [1], [
 AS_CASE([$CY_EXECUTE], [1], [

-       AC_SUBST([CY_EXECUTE])
-       AC_CHECK_HEADERS([ffi.h ffi/ffi.h], [break])
-       AS_IF([test "x$ac_cv_header_ffi_h" = xno && test "x$ac_cv_header_ffi_ffi_h" = xno], [
-               CY_CHECK_PKG_CONFIG_LIBFFI
-       ], [
-               AC_SEARCH_LIBS([ffi_call], [ffi])
-               AS_CASE([$ac_cv_search_ffi_call], [no], [CY_CHECK_PKG_CONFIG_LIBFFI])
-       ])
-       AC_LANG_PUSH([Objective C++])
-       AC_MSG_CHECKING([if we really have Objective C++])
-       AC_COMPILE_IFELSE([
-               // This space intentionally left blank
-       ], [
-               CY_OBJECTIVEC=1
-               AC_MSG_RESULT([yes])
-       ], [AC_MSG_RESULT([no])])
-       AS_IF([test "x$CY_OBJECTIVEC" = x1], [
-               AC_CHECK_FRAMEWORK([CoreFoundation], [
-                       #include <CoreFoundation/CFBase.h>
-               ], [CFAllocatorGetDefault();], [
-                       AC_SUBST([CY_OBJECTIVEC])
-                       AC_CHECK_FRAMEWORK([Foundation], [
-                               #include <Foundation/NSObject.h>
-                       ], [[[[NSObject alloc] init];]])
-                       AC_CHECK_FRAMEWORK([WebKit], [
-                               #include <WebKit/WebScriptObject.h>
-                       ], [[[[WebScriptObject alloc] init];]])
-               ], [
-                       AC_ARG_VAR([GNUSTEP_CONFIG], [prints information about the current gnustep installation])
-                       AC_CHECK_PROGS([GNUSTEP_CONFIG], [gnustep-config])
-                       AS_IF([test "x$GNUSTEP_CONFIG" != x], [
-                               AC_SUBST([CY_OBJECTIVEC])
-                               AC_LIB_APPENDTOVAR([OBJCXXFLAGS], [`$GNUSTEP_CONFIG --objc-flags`])
-                               AC_LIB_APPENDTOVAR([LIBS], [`$GNUSTEP_CONFIG --base-libs`])
-                       ], [AC_SUBST([CY_OBJECTIVEC], [0])])
-               ])
-       ])
-       AC_LANG_POP([Objective C++])
-])
-VL_LIB_READLINE
-AS_CASE([$vl_cv_lib_readline], [no], [AC_MSG_ERROR([You need readline])])
-AC_LANG_PUSH([C])
-AM_ICONV
-AS_CASE([$am_cv_func_iconv], [yes], [], [
-       for cy_iconv_prefix_arg in $CFLAGS $CXXFLAGS $OBJCXXFLAGS $LDFLAGS $LIBS; do
-               AS_CASE([$cy_iconv_prefix_arg], [-I*], [
-                       AC_LIB_APPENDTOVAR([cy_iconv_prefixes], [`echo $cy_iconv_prefix_arg | sed -e 's/^-I//;s|/include$||'`])
-               ], [-L*], [
-                       AC_LIB_APPENDTOVAR([cy_iconv_prefixes], [`echo $cy_iconv_prefix_arg | sed -e 's/^-L//;s|/lib$||'`])
-               ])
-       done
-       for with_libiconv_prefix in $cy_iconv_prefixes; do
-               AS_UNSET([am_cv_func_iconv])
-               AM_ICONV_LINKFLAGS_BODY
-               AM_ICONV
-       done
-])
-AS_CASE([$am_cv_func_iconv], [yes], [], [AC_MSG_ERROR([You need iconv])])
-AC_LANG_POP([C])
-AS_IF([test "x$CY_OBJECTIVEC" = x1], [
-       AC_CHECK_HEADER([mach/mach.h], [
-               AC_CHECK_TOOLS([_OTOOL], [otool])
-               AS_IF([test "x$_OTOOL" = x], [AC_MSG_ERROR([You need otool])])
-               AC_CHECK_TOOLS([_LIPO], [lipo])
-               AS_IF([test "x$_LIPO" = x], [AC_MSG_ERROR([You need lipo])])
-               AC_CHECK_TOOLS([_NM], [nm])
-               AS_IF([test "x$_NM" = x], [AC_MSG_ERROR([You need nm])])
-               AC_SUBST([SO], [$acl_shlibext])
-               AC_SUBST([CY_OBJECTIVEC_MACH], [1])
-               AC_SUBST([CY_ATTACH_GROUP], [procmod])
-       ])
-])
-AS_IF([test "x$GMAKE" != xmake], [
-       AC_CONFIG_FILES([Makefile])
+    AC_CHECK_HEADERS([ffi.h ffi/ffi.h], [break])
+
+    CY_LT_LIB([LTLIBFFI], AS_IF([test "x$ac_cv_header_ffi_h" = xno && test "x$ac_cv_header_ffi_ffi_h" = xno], [
+        CY_CHECK_PKG_CONFIG_LIBFFI
+    ], [
+        AC_SEARCH_LIBS([ffi_call], [ffi])
+        AS_CASE([$ac_cv_search_ffi_call], [no], [CY_CHECK_PKG_CONFIG_LIBFFI])
+    ]))
+
+    AC_LANG_PUSH([Objective C++])
+
+    AC_MSG_CHECKING([if we really have Objective C++])
+    AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], [
+        CY_OBJECTIVEC=1
+        AC_MSG_RESULT([yes])
+    ], [AC_MSG_RESULT([no])])
+
+    AS_IF([test "x$CY_OBJECTIVEC" = x1], [
+        CY_LT_LIB([LTOBJECTIVEC], [AC_CHECK_FRAMEWORK([CoreFoundation], [
+            #include <CoreFoundation/CFBase.h>
+        ], [CFAllocatorGetDefault();], [
+            AC_SUBST([CY_OBJECTIVEC])
+
+            AC_CHECK_FRAMEWORK([Foundation], [
+                #include <Foundation/NSObject.h>
+            ], [[[[NSObject alloc] init];]])
+        ], [
+            AC_ARG_VAR([GNUSTEP_CONFIG], [prints information about the current gnustep installation])
+            AC_CHECK_PROGS([GNUSTEP_CONFIG], [gnustep-config])
+
+            AS_IF([test "x$GNUSTEP_CONFIG" != x], [
+                AC_SUBST([CY_OBJECTIVEC])
+                AC_LIB_APPENDTOVAR([OBJCXXFLAGS], [`$GNUSTEP_CONFIG --objc-flags`])
+                AC_LIB_APPENDTOVAR([LIBS], [`$GNUSTEP_CONFIG --base-libs`])
+            ], [AC_SUBST([CY_OBJECTIVEC], [0])])
+        ])])
+    ])
+
+    AC_LANG_POP([Objective C++])

 ])
 ])

-AC_CONFIG_FILES([GNUmakefile])
+
+AM_CONDITIONAL([CY_OBJECTIVEC], [test "x$CY_OBJECTIVEC" = x1])
+
+CY_LT_LIB([LTLIBREADLINE], [AX_LIB_READLINE])
+AS_CASE([$ax_cv_lib_readline], [no], [AC_MSG_ERROR([missing "libreadline"])])
+
+CY_LT_LIB([LTLIBTERMCAP], [AC_SEARCH_LIBS([cur_term], [termcap ncurses])])
+
+AC_SUBST([LTLIBGCC])
+
+AC_SUBST([LTFLAGS])
+AC_SUBST([SO], [$acl_shlibext])
+
+AS_IF([test "x$CY_EXECUTE" = x1], [
+    AC_CHECK_HEADER([mach/mach.h], [
+        AC_CHECK_TOOLS([_LIPO], [lipo], [AC_MSG_ERROR([missing "lipo"])])
+        AC_CHECK_TOOLS([_NM], [nm], [AC_MSG_ERROR([missing "nm"])])
+        AC_CHECK_TOOLS([_OTOOL], [otool], [AC_MSG_ERROR([missing "otool"])])
+        AC_SUBST([CY_ATTACH_GROUP], [procmod])
+        AC_SUBST([CY_MACH], [1])])])
+AM_CONDITIONAL([CY_MACH], [test "x$CY_MACH" = x1])
+
+AC_CONFIG_FILES([Makefile])

 AC_OUTPUT
 AC_OUTPUT