X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=libgo%2Fconfigure.ac;h=0baff412de1019a85ea08f0b3e8df8f4c92e81d9;hb=2e58ed3087522ab051c23e0c45fb008a6fbef787;hp=77b9f94aba055b18fee5f27e7c20017f26817250;hpb=e59b917109ad5ecb461cd4fc6b7fda924eda8fa7;p=gcc.git diff --git a/libgo/configure.ac b/libgo/configure.ac index 77b9f94aba0..0baff412de1 100644 --- a/libgo/configure.ac +++ b/libgo/configure.ac @@ -11,7 +11,7 @@ AC_INIT(package-unused, version-unused,, libgo) AC_CONFIG_SRCDIR(Makefile.am) AC_CONFIG_HEADER(config.h) -libtool_VERSION=1:0:0 +libtool_VERSION=7:0:0 AC_SUBST(libtool_VERSION) AM_ENABLE_MULTILIB(, ..) @@ -19,7 +19,7 @@ AM_ENABLE_MULTILIB(, ..) AC_CANONICAL_SYSTEM target_alias=${target_alias-$host_alias} -AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall]) +AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist -Wall -Wno-portability]) AH_TEMPLATE(PACKAGE, [Name of package]) AH_TEMPLATE(VERSION, [Version number of package]) @@ -42,16 +42,23 @@ AM_PROG_LIBTOOL AC_SUBST(enable_shared) AC_SUBST(enable_static) +CC_FOR_BUILD=${CC_FOR_BUILD:-gcc} +AC_SUBST(CC_FOR_BUILD) + +AC_PROG_AWK + WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' AC_SUBST(WARN_FLAGS) -dnl FIXME: This should be controlled by --enable-maintainer-mode. -WERROR="-Werror" +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], + [turns on -Werror @<:@default=yes@:>@])]) +if test "x$enable_werror" != "xno"; then + WERROR="-Werror" +fi AC_SUBST(WERROR) glibgo_toolexecdir=no glibgo_toolexeclibdir=no -glibgo_prefixdir=$prefix AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) AC_ARG_ENABLE([version-specific-runtime-libs], @@ -73,25 +80,28 @@ fi # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir # Install a library built with a cross compiler in tooldir, not libdir. +if test -n "$with_cross_host" && + test x"$with_cross_host" != x"no"; then + nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}' + nover_glibgo_toolexeclibdir='${toolexecdir}/lib' +else + nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}' + nover_glibgo_toolexeclibdir='${libdir}' +fi +multi_os_directory=`$GOC -print-multi-os-directory` +case $multi_os_directory in + .) ;; # Avoid trailing /. + *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;; +esac + if test x"$glibgo_toolexecdir" = x"no"; then - if test -n "$with_cross_host" && - test x"$with_cross_host" != x"no"; then - glibgo_toolexecdir='${exec_prefix}/${host_alias}' - glibgo_toolexeclibdir='${toolexecdir}/lib' - else - glibgo_toolexecdir='${libdir}/gcc/${host_alias}' - glibgo_toolexeclibdir='${libdir}' - fi - multi_os_directory=`$CC -print-multi-os-directory` - case $multi_os_directory in - .) ;; # Avoid trailing /. - *) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;; - esac + glibgo_toolexecdir="${nover_glibgo_toolexecdir}" + glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}" fi -AC_SUBST(glibgo_prefixdir) AC_SUBST(glibgo_toolexecdir) AC_SUBST(glibgo_toolexeclibdir) +AC_SUBST(nover_glibgo_toolexeclibdir) # See if the user wants to configure without libffi. Some # architectures don't support it. FIXME: We should set a default @@ -112,10 +122,33 @@ fi AC_SUBST(LIBFFI) AC_SUBST(LIBFFIINCS) +# See if the user wants to configure without libatomic. This is useful if we are +# on an architecture for which libgo does not need an atomic support library and +# libatomic does not support our C compiler. +AC_ARG_WITH(libatomic, + AS_HELP_STRING([--without-libatomic], + [don't use libatomic]), + [:], + [with_libatomic=${with_libatomic_default-yes}]) + +LIBATOMIC= +if test "$with_libatomic" != no; then + LIBATOMIC=../libatomic/libatomic_convenience.la +fi +AC_SUBST(LIBATOMIC) + +# Used to tell GNU make to include a file without telling automake to +# include it. +go_include="-include" +AC_SUBST(go_include) + is_darwin=no is_freebsd=no is_irix=no is_linux=no +is_netbsd=no +is_openbsd=no +is_dragonfly=no is_rtems=no is_solaris=no GOOS=unknown @@ -124,6 +157,9 @@ case ${host} in *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;; *-*-irix6*) is_irix=yes; GOOS=irix ;; *-*-linux*) is_linux=yes; GOOS=linux ;; + *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;; + *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;; + *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;; *-*-rtems*) is_rtems=yes; GOOS=rtems ;; *-*-solaris2*) is_solaris=yes; GOOS=solaris ;; esac @@ -131,18 +167,36 @@ AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes) AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes) AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes) AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes) +AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes) +AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes) +AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes) AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes) AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes) AC_SUBST(GOOS) +dnl Test whether we need to use DejaGNU or whether we can use the +dnl simpler gotest approach. We can only use gotest for a native +dnl build. +USE_DEJAGNU=no +case ${host} in + *-*-rtems*) USE_DEJAGNU=yes ;; + ${build}) ;; + *) USE_DEJAGNU=yes ;; +esac +AC_SUBST(USE_DEJAGNU) + dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch). is_386=no is_alpha=no is_arm=no +is_arm64=no is_m68k=no -mips_abi="" +mips_abi=unknown is_ppc=no is_ppc64=no +is_ppc64le=no +is_s390=no +is_s390x=no is_sparc=no is_sparc64=no is_x86_64=no @@ -152,6 +206,10 @@ case ${host} in is_alpha=yes GOARCH=alpha ;; + aarch64-*-*) + is_arm64=yes + GOARCH=arm64 + ;; arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) is_arm=yes GOARCH=arm @@ -209,11 +267,30 @@ changequote([,])dnl #ifdef _ARCH_PPC64 #error 64-bit #endif], -[is_ppc=yes], [is_ppc64=yes]) +[is_ppc=yes], + [AC_COMPILE_IFELSE([ +#if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) +#error 64be +#endif], +[is_ppc64le=yes],[is_ppc64=yes])]) if test "$is_ppc" = "yes"; then GOARCH=ppc - else + elif test "$is_ppc64" = "yes"; then GOARCH=ppc64 + else + GOARCH=ppc64le + fi + ;; + s390*-*-*) + AC_COMPILE_IFELSE([ +#if defined(__s390x__) +#error 64-bit +#endif], +[is_s390=yes], [is_s390x=yes]) + if test "$is_s390" = "yes"; then + GOARCH=s390 + else + GOARCH=s390x fi ;; sparc*-*-*) @@ -232,44 +309,58 @@ esac AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes) AM_CONDITIONAL(LIBGO_IS_ALPHA, test $is_alpha = yes) AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes) +AM_CONDITIONAL(LIBGO_IS_ARM64, test $is_arm64 = yes) AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes) -AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != "") +AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != unknown) AM_CONDITIONAL(LIBGO_IS_MIPSO32, test $mips_abi = o32) AM_CONDITIONAL(LIBGO_IS_MIPSN32, test $mips_abi = n32) AM_CONDITIONAL(LIBGO_IS_MIPSN64, test $mips_abi = n64) AM_CONDITIONAL(LIBGO_IS_MIPSO64, test $mips_abi = o64) AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes) AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes) +AM_CONDITIONAL(LIBGO_IS_PPC64LE, test $is_ppc64le = yes) +AM_CONDITIONAL(LIBGO_IS_S390, test $is_s390 = yes) +AM_CONDITIONAL(LIBGO_IS_S390X, test $is_s390x = yes) AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = 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}_${GOARCH}.go +GO_LIBCALL_OS_FILE= +GO_LIBCALL_OS_ARCH_FILE= +GO_SYSCALL_OS_FILE= +GO_SYSCALL_OS_ARCH_FILE= +if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then + GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.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}_${GOARCH}.go +if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then + GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go" +fi +if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then + GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go" +fi +if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then + GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go" fi -AC_SUBST(GO_DEBUG_PROC_REGS_OS_ARCH_FILE) +AC_SUBST(GO_LIBCALL_OS_FILE) +AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) +AC_SUBST(GO_SYSCALL_OS_FILE) +AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) -dnl Some targets need special flags to build sysinfo.go. +dnl Special flags used to generate sysinfo.go. +OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" case "$target" in - *-*-solaris2.[[89]]) - # Solaris 8/9 need this so struct msghdr gets the msg_control - # etc. fields in (_XPG4_2). - OSCFLAGS='-D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D__EXTENSIONS__' + mips-sgi-irix6.5*) + # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct + # msghdr in . + OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" ;; *-*-solaris2.1[[01]]) # Solaris 10+ needs this so struct msghdr gets the msg_control - # etc. fields in (_XPG4_2). _XOPEN_SOURCE=500 as + # etc. fields in (_XPG4_2). _XOPEN_SOURCE=600 as # above doesn't work with C99. - OSCFLAGS='-D_XOPEN_SOURCE=600 -D__EXTENSIONS__' + OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" ;; esac AC_SUBST(OSCFLAGS) @@ -301,15 +392,23 @@ dnl possible for the linker to support this for some targets but not dnl others. AC_CACHE_CHECK([whether linker supports split stack], [libgo_cv_c_linker_supports_split_stack], -libgo_cv_c_linker_supports_split_stack=no -if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then +[libgo_cv_c_linker_supports_split_stack=no +if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then libgo_cv_c_linker_supports_split_stack=yes -fi) +fi]) if test "$libgo_cv_c_linker_supports_split_stack" = yes; then AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1, [Define if the linker support split stack adjustments]) fi +AC_CACHE_CHECK([whether compiler is llgo], +[libgo_cv_c_goc_is_llgo], +[libgo_cv_c_goc_is_llgo=no +if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then + libgo_cv_c_goc_is_llgo=yes +fi]) +AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes) + dnl Test for the -lm library. MATH_LIBS= AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm) @@ -366,8 +465,9 @@ PTHREAD_LIBS= AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) AC_SUBST(PTHREAD_LIBS) -dnl Test if -lrt is required for sched_yield. +dnl Test if -lrt is required for sched_yield and/or nanosleep. AC_SEARCH_LIBS([sched_yield], [rt]) +AC_SEARCH_LIBS([nanosleep], [rt]) AC_C_BIGENDIAN @@ -423,13 +523,60 @@ no) ;; esac -AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h) +AC_CHECK_HEADERS(sched.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/reboot.h netinet/icmp6.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h) + +AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [], +[#ifdef HAVE_SYS_SOCKET_H +#include +#endif +]) + +AC_CACHE_CHECK([whether can be used], +[libgo_cv_c_ustat_h], +[CFLAGS_hold=$CFLAGS +CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE $OSCFLAGS" +AC_COMPILE_IFELSE( +[AC_LANG_SOURCE([ +#include +#ifdef HAVE_LINUX_FILTER_H +#include +#endif +#include +])], [libgo_cv_c_ustat_h=yes], [libgo_cv_c_ustat_h=no]) +CFLAGS=$CFLAGS_hold]) +if test $libgo_cv_c_ustat_h = yes; then + AC_DEFINE(HAVE_USTAT_H, 1, + [Define to 1 if you have the header file and it works.]) +fi + AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes) -AC_CHECK_FUNCS(srandom random strerror_r strsignal wait4) +AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr) AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes) AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes) +AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice tee unlinkat unshare utimensat) +AC_TYPE_OFF_T +AC_CHECK_TYPES([loff_t]) + +LIBS_hold="$LIBS" +LIBS="$LIBS -lm" +AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl) +LIBS="$LIBS_hold" + +CFLAGS_hold="$CFLAGS" +CFLAGS="$CFLAGS $PTHREAD_CFLAGS" +LIBS_hold="$LIBS" +LIBS="$LIBS $PTHREAD_LIBS" +AC_CHECK_FUNCS(sem_timedwait) +CFLAGS="$CFLAGS_hold" +LIBS="$LIBS_hold" + +LIBS_hold="$LIBS" +LIBS="$LIBS $MATH_LIBS" +AC_CHECK_FUNCS(matherr) +LIBS="$LIBS_hold" + AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4], [libgo_cv_func___sync_bool_compare_and_swap_4], [AC_LINK_IFELSE([ @@ -444,6 +591,20 @@ if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32]) fi +AC_CACHE_CHECK([for __sync_bool_compare_and_swap_8], +[libgo_cv_func___sync_bool_compare_and_swap_8], +[AC_LINK_IFELSE([ +typedef unsigned int uint64 __attribute__ ((mode (DI))); +uint64 i; +int main() { return __sync_bool_compare_and_swap (&i, 0, 1); } +], +[libgo_cv_func___sync_bool_compare_and_swap_8=yes], +[libgo_cv_func___sync_bool_compare_and_swap_8=no])]) +if test "$libgo_cv_func___sync_bool_compare_and_swap_8" = "yes"; then + AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8, 1, + [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint64]) +fi + AC_CACHE_CHECK([for __sync_fetch_and_add_4], [libgo_cv_func___sync_fetch_and_add_4], [AC_LINK_IFELSE([ @@ -458,6 +619,20 @@ if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32]) fi +AC_CACHE_CHECK([for __sync_add_and_fetch_8], +[libgo_cv_func___sync_add_and_fetch_8], +[AC_LINK_IFELSE([ +typedef unsigned int uint64 __attribute__ ((mode (DI))); +uint64 i; +int main() { return __sync_add_and_fetch (&i, 1); } +], +[libgo_cv_func___sync_add_and_fetch_8=yes], +[libgo_cv_func___sync_add_and_fetch_8=no])]) +if test "$libgo_cv_func___sync_add_and_fetch_8" = "yes"; then + AC_DEFINE(HAVE_SYNC_ADD_AND_FETCH_8, 1, + [Define to 1 if the compiler provides the __sync_add_and_fetch function for uint64]) +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], @@ -474,10 +649,238 @@ if test "$libgo_cv_c_stringops" = yes; then fi AC_SUBST(STRINGOPS_FLAG) +dnl For x86 we want to compile the math library with -mfancy-math-387 +dnl -funsafe-math-optimizations so that we can use the builtin +dnl instructions directly. +AC_CACHE_CHECK([whether compiler supports -mfancy-math-387], +[libgo_cv_c_fancymath], +[CFLAGS_hold=$CFLAGS +CFLAGS="$CFLAGS -mfancy-math-387" +AC_COMPILE_IFELSE([int i;], +[libgo_cv_c_fancymath=yes], +[libgo_cv_c_fancymath=no]) +CFLAGS=$CFLAGS_hold]) +MATH_FLAG= +if test "$libgo_cv_c_fancymath" = yes; then + MATH_FLAG="-mfancy-math-387 -funsafe-math-optimizations" +else + MATH_FLAG="-ffp-contract=off" +fi +AC_SUBST(MATH_FLAG) + CFLAGS_hold=$CFLAGS CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE" -AC_CHECK_TYPES(off64_t) +AC_CHECK_TYPES([off64_t]) +CFLAGS=$CFLAGS_hold + +dnl Work out the size of the epoll_events struct on GNU/Linux. +AC_CACHE_CHECK([epoll_event size], +[libgo_cv_c_epoll_event_size], +[AC_COMPUTE_INT(libgo_cv_c_epoll_event_size, +[sizeof (struct epoll_event)], +[#include ], +[libgo_cv_c_epoll_event_size=0])]) +SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size} +AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT) + +dnl Work out the offset of the fd field in the epoll_events struct on +dnl GNU/Linux. +AC_CACHE_CHECK([epoll_event data.fd offset], +[libgo_cv_c_epoll_event_fd_offset], +[AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset, +[offsetof (struct epoll_event, data.fd)], +[#include +#include ], +[libgo_cv_c_epoll_event_fd_offset=0])]) +STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset} +AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET) + +dnl See if struct exception is defined in . +AC_CHECK_TYPE([struct exception], +[libgo_has_struct_exception=yes], +[libgo_has_struct_exception=no], +[#include ]) +if test "$libgo_has_struct_exception" = "yes"; then + AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1, + [Define to 1 if defines struct exception]) +fi + +dnl See whether setcontext changes the value of TLS variables. +AC_CACHE_CHECK([whether setcontext clobbers TLS variables], +[libgo_cv_lib_setcontext_clobbers_tls], +[CFLAGS_hold="$CFLAGS" +CFLAGS="$PTHREAD_CFLAGS" +LIBS_hold="$LIBS" +LIBS="$LIBS $PTHREAD_LIBS" +AC_CHECK_SIZEOF([void *]) +AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8]) +AC_RUN_IFELSE( + [AC_LANG_SOURCE([ +#include +#include +#include +#include + +__thread int tls; + +static char stack[[10 * 1024 * 1024]]; +static ucontext_t c; + +/* Called via makecontext/setcontext. */ + +static void +cfn (void) +{ + exit (tls); +} + +/* Called via pthread_create. */ + +static void * +tfn (void *dummy) +{ + /* The thread should still see this value after calling + setcontext. */ + tls = 0; + + setcontext (&c); + + /* The call to setcontext should not return. */ + abort (); +} + +int +main () +{ + pthread_t tid; + + /* The thread should not see this value. */ + tls = 1; + + if (getcontext (&c) < 0) + abort (); + + c.uc_stack.ss_sp = stack; +#ifdef MAKECONTEXT_STACK_TOP + c.uc_stack.ss_sp += sizeof stack; +#endif + c.uc_stack.ss_flags = 0; + c.uc_stack.ss_size = sizeof stack; + c.uc_link = NULL; + makecontext (&c, cfn, 0); + + if (pthread_create (&tid, NULL, tfn, NULL) != 0) + abort (); + + if (pthread_join (tid, NULL) != 0) + abort (); + + /* The thread should have called exit. */ + abort (); +} +])], +[libgo_cv_lib_setcontext_clobbers_tls=no], +[libgo_cv_lib_setcontext_clobbers_tls=yes], +[case "$target:$ptr_type_size" in + i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64) + libgo_cv_lib_setcontext_clobbers_tls=yes ;; + *) + libgo_cv_lib_setcontext_clobbers_tls=no ;; + esac +]) +CFLAGS="$CFLAGS_hold" +LIBS="$LIBS_hold" +]) +if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then + AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1, + [Define if setcontext clobbers TLS variables]) +fi + +AC_CACHE_CHECK([whether .eh_frame section should be read-only], +libgo_cv_ro_eh_frame, [ +libgo_cv_ro_eh_frame=no +echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c +if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then + if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then + libgo_cv_ro_eh_frame=yes + elif grep '.section.*eh_frame.*#alloc' conftest.c \ + | grep -v '#write' > /dev/null; then + libgo_cv_ro_eh_frame=yes + fi +fi +rm -f conftest.* +]) +if test "x$libgo_cv_ro_eh_frame" = xyes; then + AC_DEFINE(EH_FRAME_FLAGS, "a", + [Define to the flags needed for the .section .eh_frame directive.]) +else + AC_DEFINE(EH_FRAME_FLAGS, "aw", + [Define to the flags needed for the .section .eh_frame directive.]) +fi + +AC_CACHE_CHECK([if compiler supports -Qunused-arguments], +[libgo_cv_c_unused_arguments], +[CFLAGS_hold=$CFLAGS +CFLAGS="$CFLAGS -Qunused-arguments" +AC_COMPILE_IFELSE([[int i;]], +[libgo_cv_c_unused_arguments=yes], +[libgo_cv_c_unused_arguments=no]) +CFLAGS=$CFLAGS_hold]) + +AC_CACHE_CHECK([if assembler supports GNU comdat group syntax], +libgo_cv_as_comdat_gnu, [ +echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s +CFLAGS_hold=$CFLAGS +if test "$libgo_cv_c_unused_arguments" = yes; then + CFLAGS="$CFLAGS -Qunused-arguments" +fi +if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then + libgo_cv_as_comdat_gnu=yes +else + libgo_cv_as_comdat_gnu=no +fi CFLAGS=$CFLAGS_hold +]) +if test "x$libgo_cv_as_comdat_gnu" = xyes; then + AC_DEFINE(HAVE_AS_COMDAT_GAS, 1, + [Define if your assembler supports GNU comdat group syntax.]) +fi + +AC_CACHE_CHECK([assembler supports pc related relocs], +libgo_cv_as_x86_pcrel, [ +libgo_cv_as_x86_pcrel=yes +echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s +CFLAGS_hold=$CFLAGS +if test "$libgo_cv_c_unused_arguments" = yes; then + CFLAGS="$CFLAGS -Qunused-arguments" +fi +if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then + libgo_cv_as_x86_pcrel=no +fi +CFLAGS=$CFLAGS_hold +]) +if test "x$libgo_cv_as_x86_pcrel" = xyes; then + AC_DEFINE(HAVE_AS_X86_PCREL, 1, + [Define if your assembler supports PC relative relocs.]) +fi + +AC_CACHE_CHECK([assembler supports unwind section type], +libgo_cv_as_x86_64_unwind_section_type, [ +libgo_cv_as_x86_64_unwind_section_type=yes +echo '.section .eh_frame,"a",@unwind' > conftest.s +CFLAGS_hold=$CFLAGS +if test "$libgo_cv_c_unused_arguments" = yes; then + CFLAGS="$CFLAGS -Qunused-arguments" +fi +if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then + libgo_cv_as_x86_64_unwind_section_type=no +fi +CFLAGS=$CFLAGS_hold +]) +if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then + AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, + [Define if your assembler supports unwind section type.]) +fi AC_CACHE_SAVE