+
+LT_INIT([disable-static])
+
+AC_LANG([C++])
+
+AX_CXX_COMPILE_STDCXX_11([ext], [mandatory])
+OBJCXXFLAGS="${OBJCXXFLAGS} ${CXXFLAGS##*' '}"
+
+PKG_PROG_PKG_CONFIG([0.22])
+
+AC_PATH_PROG([GIT], [git])
+AC_PATH_PROG([TIME], [time])
+
+dnl CY_CHECK_PROGS_VERSION {{{
+AC_DEFUN([CY_CHECK_PROGS_VERSION], [
+ 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'], [3.0])
+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) \(.*\)$/\1/p;d'], [1.19])
+
+dnl CY_TRY {{{
+AC_DEFUN([CY_SUCCESS], [cy_good=1])
+AC_DEFUN([CY_FAILURE], [cy_good=0])
+
+AC_DEFUN([CY_TRY], [
+ cy_save=$]$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[)
+])
+
+AC_DEFUN([CY_TEST_FLAG], [
+ CY_TEST_FLAG_(]$1[, [C], [CFLAGS], [cc])
+ CY_TEST_FLAG_(]$1[, [C++], [CXXFLAGS], [c++])
+ CY_TEST_FLAG_(]$1[, [Objective C++], [OBJCXXFLAGS], [c++ -ObjC])
+])
+
+AX_CFLAGS_WARN_ALL
+AX_CXXFLAGS_WARN_ALL
+AX_FLAGS_WARN_ALL
+
+CY_TEST_FLAG([-Werror])
+
+dnl XXX: this is used to support GNU Objective-C struct objc_method
+CY_TEST_FLAG([-Wno-deprecated-declarations])
+
+CY_TEST_FLAG([-Wno-dangling-else])
+CY_TEST_FLAG([-Wno-empty-body])
+CY_TEST_FLAG([-Wno-overloaded-virtual])
+CY_TEST_FLAG([-Wno-parentheses])
+CY_TEST_FLAG([-Wno-tautological-undefined-compare])
+CY_TEST_FLAG([-Wno-unneeded-internal-declaration])
+
+AX_PTHREAD
+
+AC_DEFUN([CY_LT_LIB], [
+ cy_save=$LIBS
+ LIBS=
+ ]$2[
+ ]$1[=$LIBS
+ LIBS=$cy_save
+ AC_SUBST(]$1[)
+])
+
+dnl --enable-javascript {{{
+AC_DEFUN([CY_CHECK_JAVASCRIPTCORE], [
+ CY_LT_LIB([LTJAVASCRIPTCORE], [AC_SEARCH_LIBS([JSEvaluateScript], [JavaScriptCore], [
+ AC_SUBST([CY_EXECUTE], [1])
+ ], [AC_CHECK_FRAMEWORK([JavaScriptCore], [
+ #include <JavaScriptCore/JSBase.h>
+ ], [
+ JSEvaluateScript(0, 0, 0, 0, 0, 0);
+ ], [
+ AC_SUBST([CY_EXECUTE], [1])
+ ], [
+ for cy_webkit_pkg in "javascriptcoregtk-4.0"; do
+ PKG_CHECK_MODULES([WEBKIT], [$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], [
+ CY_CHECK_JAVASCRIPTCORE])
+
+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@:>@]
+)], [
+ AS_CASE([$enableval],
+ [yes], [
+ CY_CHECK_JAVASCRIPT],
+ [no], [
+ AC_SUBST([CY_EXECUTE], [0])],
+ [JavaScriptCore], [
+ CY_CHECK_JAVASCRIPTCORE],
+ [AC_MSG_ERROR([Unknown JavaScript engine: $enableval])])
+], [CY_CHECK_JAVASCRIPT])
+dnl }}}
+
+AC_ARG_ENABLE([console], AS_HELP_STRING([--disable-console], [disable console]))
+AM_CONDITIONAL([CY_CONSOLE], [test "x$enable_console" != "xno"])
+
+AC_ARG_ENABLE([attach], AS_HELP_STRING([--disable-attach], [disable attach]))
+AM_CONDITIONAL([CY_ATTACH], [test "x$enable_attach" != "xno" -a "x$CY_EXECUTE" = x1])
+
+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], [
+ 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([$ac_cv_search_ffi_call], [no], [CY_CHECK_PKG_CONFIG_LIBFFI])
+ ]))
+
+ AC_CHECK_FRAMEWORK([JavaVM], [
+ #include <JavaVM/jni.h>
+ ], [JNI_GetCreatedJavaVMs(NULL, 0, NULL);], [
+ AC_SUBST([CY_JAVA], [1])
+ ], [AC_CHECK_HEADER([jni.h], [
+ AC_SUBST([CY_JAVA], [1])
+ CY_LT_LIB([LTJAVA], [AC_SEARCH_LIBS([JNI_GetCreatedJavaVMs], [dvm], [
+ ])])
+ ], [
+ AC_SUBST([CY_JAVA], [0])
+ ])])
+
+ AC_LANG_PUSH([Objective C++])
+
+ AC_MSG_CHECKING([if we really have Objective C++])
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], [
+ CY_OBJECTIVEC=1
+ AC_MSG_RESULT([yes])
+ ], [AC_MSG_RESULT([no])])
+
+ AS_IF([test "x$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++])