dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
is_386=no
is_arm=no
+is_m68k=no
+is_mips=no
+is_mips64=no
+is_ppc=no
+is_ppc64=no
is_sparc=no
-is_sparcv9=no
+is_sparc64=no
is_x86_64=no
GOARCH=unknown
case ${host} in
+ arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
+ is_arm=yes
+ GOARCH=arm
+ ;;
changequote(,)dnl
i[34567]86-*-* | x86_64-*-*)
changequote([,])dnl
- AC_PREPROC_IFELSE([
+ AC_COMPILE_IFELSE([
#ifdef __x86_64__
#error 64-bit
#endif],
[is_386=yes], [is_x86_64=yes])
if test "$is_386" = "yes"; then
- is_386=yes
GOARCH=386
else
- is_x86_64=yes
GOARCH=amd64
fi
;;
- arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
- is_arm=yes
- GOARCH=arm
+ m68k*-*-*)
+ is_m68k=yes
+ GOARCH=m68k
+ ;;
+ mips*-*-*)
+ AC_COMPILE_IFELSE([
+#ifdef __mips64
+#error 64-bit
+#endif],
+[is_mips=yes], [is_mips64=yes])
+ if test "$is_mips" = "yes"; then
+ GOARCH=mips
+ else
+ GOARCH=mips64
+ fi
+ ;;
+ rs6000*-*-* | powerpc*-*-*)
+ AC_COMPILE_IFELSE([
+#ifdef _ARCH_PPC64
+#error 64-bit
+#endif],
+[is_ppc=yes], [is_ppc64=yes])
+ if test "$is_ppc" = "yes"; then
+ GOARCH=ppc
+ else
+ GOARCH=ppc64
+ fi
;;
sparc*-*-*)
- AC_PREPROC_IFELSE([
+ AC_COMPILE_IFELSE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit
#endif],
-[is_sparc=yes], [is_sparcv9=yes])
+[is_sparc=yes], [is_sparc64=yes])
if test "$is_sparc" = "yes"; then
- is_sparc=yes
GOARCH=sparc
else
- is_sparcv9=yes
- GOARCH=sparcv9
+ GOARCH=sparc64
fi
;;
esac
AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
+AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes)
+AM_CONDITIONAL(LIBGO_IS_MIPS, test $is_mips = yes)
+AM_CONDITIONAL(LIBGO_IS_MIPS64, test $is_mips64 = yes)
+AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes)
+AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes)
AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
-AM_CONDITIONAL(LIBGO_IS_SPARCV9, test $isv_sparcv9 = yes)
+AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
AC_SUBST(GOARCH)
+dnl Some files are only present when needed for specific architectures.
+GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
+if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
+ GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
+fi
+AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
+
+GO_DEBUG_PROC_REGS_OS_ARCH_FILE=
+if test -f ${srcdir}/go/debug/proc/regs_${GOOS}_${GOARCH}.go; then
+ GO_DEBUG_PROC_REGS_OS_ARCH_FILE=go/debug/proc/regs_${GOOS}_${GOARCH}.go
+fi
+AC_SUBST(GO_DEBUG_PROC_REGS_OS_ARCH_FILE)
+
dnl Use -fsplit-stack when compiling C code if available.
AC_CACHE_CHECK([whether -fsplit-stack is supported],
[libgo_cv_c_split_stack_supported],
AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
AC_SUBST(PTHREAD_LIBS)
+dnl Test if -lrt is required for sched_yield.
+AC_SEARCH_LIBS([sched_yield], [rt])
+
AC_C_BIGENDIAN
GCC_CHECK_UNWIND_GETIPINFO
-AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
+AC_ARG_ENABLE(sjlj-exceptions,
+ AC_HELP_STRING([--enable-sjlj-exceptions],
+ [force use of builtin_setjmp for exceptions]),
+ [case "$enableval" in
+ yes|no|auto) ;;
+ *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
+ esac],
+ [enable_sjlj_exceptions=auto])
+
+AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
+[libgo_cv_lib_sjlj_exceptions],
+[AC_LANG_CONFTEST(
+ [AC_LANG_SOURCE([
+void bar ();
+void clean (int *);
+void foo ()
+{
+ int i __attribute__ ((cleanup (clean)));
+ bar();
+}
+])])
+CFLAGS_hold=$CFLAGS
+CFLAGS="--save-temps -fexceptions"
+libgo_cv_lib_sjlj_exceptions=unknown
+AS_IF([ac_fn_c_try_compile],
+ [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
+ libgo_cv_lib_sjlj_exceptions=yes
+ elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
+ libgo_cv_lib_sjlj_exceptions=no
+ fi])
+CFLAGS=$CFLAGS_hold
+rm -f conftest*
+])
+
+if test "$enable_sjlj_exceptions" = "auto"; then
+ enable_sjlj_exceptions=$libgo_cv_lib_sjlj_exceptions
+fi
+
+case $enable_sjlj_exceptions in
+yes)
+ AC_DEFINE(LIBGO_SJLJ_EXCEPTIONS, 1,
+ [Define if the C++ compiler is configured for setjmp/longjmp exceptions.])
+ ;;
+no)
+ ;;
+*)
+ AC_MSG_ERROR([unable to detect exception model])
+ ;;
+esac
+
+AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h)
AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
AC_CHECK_FUNCS(srandom random strsignal)
+AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4],
+[libgo_cv_func___sync_bool_compare_and_swap_4],
+[AC_LINK_IFELSE([
+typedef unsigned int uint32 __attribute__ ((mode (SI)));
+uint32 i;
+int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
+],
+[libgo_cv_func___sync_bool_compare_and_swap_4=yes],
+[libgo_cv_func___sync_bool_compare_and_swap_4=no])])
+if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
+ AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1,
+ [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
+fi
+
+AC_CACHE_CHECK([for __sync_fetch_and_add_4],
+[libgo_cv_func___sync_fetch_and_add_4],
+[AC_LINK_IFELSE([
+typedef unsigned int uint32 __attribute__ ((mode (SI)));
+uint32 i;
+int main() { return __sync_fetch_and_add (&i, 1); }
+],
+[libgo_cv_func___sync_fetch_and_add_4=yes],
+[libgo_cv_func___sync_fetch_and_add_4=no])])
+if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
+ AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
+ [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
+fi
+
dnl For x86 we want to use the -minline-all-stringops option to avoid
dnl forcing a stack split when calling memcpy and friends.
AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
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