diff options
Diffstat (limited to 'erts/configure.in')
| -rw-r--r-- | erts/configure.in | 598 |
1 files changed, 226 insertions, 372 deletions
diff --git a/erts/configure.in b/erts/configure.in index 913315e402..2f6043ee85 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -113,32 +113,14 @@ AS_HELP_STRING([--enable-bootstrap-only], # Disable stuff not necessary in a bootstrap only system in order # to speed up things by reducing the amount of stuff needing to be # built... - enable_threads=no - enable_smp_support=no with_termcap=no with_ssl=no with_ssl_zlib=no enable_hipe=no enable_sctp=no - enable_dirty_schedulers=no - fi + fi ]) -AC_ARG_ENABLE(threads, -AS_HELP_STRING([--enable-threads], [enable async thread support]) -AS_HELP_STRING([--disable-threads], [disable async thread support]), -[ case "$enableval" in - no) enable_threads=no ;; - *) enable_threads=yes ;; - esac ], enable_threads=unknown) - -AC_ARG_ENABLE(dirty-schedulers, -AS_HELP_STRING([--enable-dirty-schedulers], [enable dirty scheduler support]), -[ case "$enableval" in - no) enable_dirty_schedulers=no ;; - *) enable_dirty_schedulers=yes ;; - esac ], enable_dirty_schedulers=default) - AC_ARG_ENABLE(dirty-schedulers-test, AS_HELP_STRING([--enable-dirty-schedulers-test], [enable dirty scheduler test (for debugging purposes)]), [ case "$enableval" in @@ -146,22 +128,6 @@ AS_HELP_STRING([--enable-dirty-schedulers-test], [enable dirty scheduler test (f *) enable_dirty_schedulers_test=no ;; esac ], enable_dirty_schedulers_test=no) -AC_ARG_ENABLE(smp-support, -AS_HELP_STRING([--enable-smp-support], [enable smp support]) -AS_HELP_STRING([--disable-smp-support], [disable smp support]), -[ case "$enableval" in - no) enable_smp_support=no ;; - *) enable_smp_support=yes ;; - esac ], enable_smp_support=unknown) - -AC_ARG_ENABLE(plain-emulator, -AS_HELP_STRING([--enable-plain-emulator], [enable plain emulator]) -AS_HELP_STRING([--disable-plain-emulator], [disable plain emulator]), -[ case "$enableval" in - no) enable_plain_emulator=no ;; - *) enable_plain_emulator=yes ;; - esac ], enable_plain_emulator=unknown) - AC_ARG_ENABLE(smp-require-native-atomics, AS_HELP_STRING([--disable-smp-require-native-atomics], [disable the SMP requirement of a native atomic implementation]), @@ -580,6 +546,90 @@ AC_SUBST(WFLAGS) AC_SUBST(WERRORFLAGS) AC_SUBST(CFLAG_RUNTIME_LIBRARY_PATH) +## Check if we can do profile guided optimization of beam_emu +LM_CHECK_ENABLE_CFLAG([-fprofile-generate -Werror],[PROFILE_GENERATE]) +LM_CHECK_ENABLE_CFLAG([-fprofile-use -Werror],[PROFILE_USE]) + +## Check if this is clang +LM_CHECK_ENABLE_CFLAG([-fprofile-instr-generate -Werror],[PROFILE_INSTR_GENERATE]) +if test "X$PROFILE_INSTR_GENERATE" = "Xtrue"; then + # It was clang, now we also have to check if we have llvm-profdata and that + # we can link programs with -fprofile-instr-use + saved_CFLAGS=$CFLAGS; + CFLAGS="-fprofile-instr-generate -Werror $saved_CFLAGS" + AC_RUN_IFELSE([AC_LANG_PROGRAM([],[])], + [AC_CHECK_PROGS([LLVM_PROFDATA], [llvm-profdata]) + AC_CHECK_PROGS([XCRUN], [xcrun]) + if test "X$XCRUN" != "X" -a "X$LLVM_PROFDATA" = "X"; then + AC_MSG_CHECKING([for $XCRUN llvm-profdata]) + if $XCRUN llvm-profdata --help 2>& AS_MESSAGE_LOG_FD >& AS_MESSAGE_LOG_FD; then + LLVM_PROFDATA="$XCRUN llvm-profdata" + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + fi + AC_SUBST(LLVM_PROFDATA) + if test "X$LLVM_PROFDATA" != "X"; then + CFLAGS="-fprofile-instr-use=default.profdata -Werror $saved_CFLAGS"; + $LLVM_PROFDATA merge -output=default.profdata *.profraw; + AC_MSG_CHECKING([whether gcc accepts -fprofile-instr-use=default.profdata -Werror]) + AC_COMPILE_IFELSE([], + [AC_MSG_RESULT([yes]) + PROFILE_INSTR_USE=true], + [AC_MSG_RESULT([no]) + PROFILE_INSTR_USE=false]) + rm -f default.profdata + fi], + []) + rm -f *.profraw + CFLAGS=$saved_CFLAGS; +fi + +AC_ARG_ENABLE(pgo, +AS_HELP_STRING([--enable-pgo], + [build erts using PGO (profile guided optimization)]), +[ case "$enableval" in + no) enable_pgo=no ;; + *) enable_pgo=yes ;; + esac +],enable_pgo=default) + +LM_CHECK_ENABLE_CFLAG([-fprofile-use -fprofile-correction -Werror],[PROFILE_CORRECTION]) + +USE_PGO=false +AC_MSG_CHECKING([whether to do PGO of erts]) +if test $enable_pgo = no; then + AC_MSG_RESULT([no, disabled by user]) +elif test $CROSS_COMPILING = yes; then + if $enable_pgo = yes; then + AC_MSG_ERROR(cannot use PGO when cross-compiling) + else + AC_MSG_RESULT([no, cross compiling]) + fi +elif test "X$host" = "Xwin32"; then + AC_MSG_RESULT([no, not supported in windows]) +elif test "X$PROFILE_GENERATE" = "Xtrue" -a "X$PROFILE_USE" = "Xtrue" -a "X$PROFILE_CORRECTION" = "Xtrue"; then + ## We need -fprofile-generate and -fprofile-correction support to use PGO with + ## gcc as multiple threads run within the executed object files + USE_PGO=true + PROFILE_COMPILER=gcc + AC_MSG_RESULT([yes, using -fprofile-generate -fprofile-correction]) +elif test "X$PROFILE_INSTR_GENERATE" = "Xtrue" -a "X$PROFILE_INSTR_USE" = "Xtrue"; then + USE_PGO=true + PROFILE_COMPILER=clang + AC_MSG_RESULT([yes, using -fprofile-instr-generate]) +else + if $enable_pgo = yes; then + AC_MSG_ERROR(cannot use PGO with this compiler) + else + AC_MSG_RESULT([no]) + fi +fi + +AC_SUBST(USE_PGO) +AC_SUBST(PROFILE_COMPILER) + AC_CHECK_SIZEOF(void *) # Needed for ARCH and smp checks below if test "x$ac_cv_sizeof_void_p" = x8; then AC_SUBST(EXTERNAL_WORD_SIZE, 64) @@ -640,6 +690,7 @@ case $chk_arch_ in armv7l) ARCH=arm;; armv7hl) ARCH=arm;; tile) ARCH=tile;; + e2k) ARCH=e2k;; *) ARCH=noarch;; esac @@ -996,81 +1047,12 @@ dnl are set by ERL_FIND_ETHR_LIB ERL_FIND_ETHR_LIB if test "X$ETHR_LIB_NAME" = "X"; then - found_threads=no -else - found_threads=yes + AC_MSG_ERROR([cannot build emulator since no thread library was found]) fi -FLAVORS= TYPES=opt -ERTS_BUILD_SMP_EMU=$enable_smp_support -AC_MSG_CHECKING(whether an emulator with smp support should be built) -case $ERTS_BUILD_SMP_EMU in - yes) - AC_MSG_RESULT(yes; enabled by user) - ;; - no) - AC_MSG_RESULT(no; disabled by user) - ;; - unknown) - AC_TRY_COMPILE([],[ - #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) - ; - #else - #error old or no gcc - #endif - ], - gcc_smp=okgcc, - gcc_smp=oldornogcc) - ERTS_BUILD_SMP_EMU=yes - case "$enable_threads-$gcc_smp-$found_threads-$host_os" in - - no-*) - AC_MSG_RESULT(no; threads disabled by user) - ERTS_BUILD_SMP_EMU=no - ;; - - *-okgcc-yes-*) - AC_MSG_RESULT(yes) - ERTS_BUILD_SMP_EMU=yes - ;; - - *-win32) - AC_MSG_RESULT(yes) - ERTS_BUILD_SMP_EMU=yes - ;; - - *-oldornogcc-*) - AC_MSG_RESULT(no; old gcc or no gcc found) - ERTS_BUILD_SMP_EMU=no - ;; - - *) - AC_MSG_RESULT(no) - ERTS_BUILD_SMP_EMU=no - ;; - esac - ;; -esac - -AC_MSG_CHECKING(whether dirty schedulers should be enabled) -case $ERTS_BUILD_SMP_EMU-$enable_dirty_schedulers in - yes-yes) - DIRTY_SCHEDULER_SUPPORT=yes;; - yes-default) - DIRTY_SCHEDULER_SUPPORT=yes;; - no-default) - DIRTY_SCHEDULER_SUPPORT=no;; - no-yes) - AC_MSG_ERROR([No smp emulator will be built, but dirty schedulers requested]);; - *) - DIRTY_SCHEDULER_SUPPORT=no;; -esac -AC_MSG_RESULT($DIRTY_SCHEDULER_SUPPORT) -AC_SUBST(DIRTY_SCHEDULER_SUPPORT) DIRTY_SCHEDULER_TEST=$enable_dirty_schedulers_test -test $DIRTY_SCHEDULER_SUPPORT = yes || DIRTY_SCHEDULER_TEST=no AC_SUBST(DIRTY_SCHEDULER_TEST) test $DIRTY_SCHEDULER_TEST != yes || { test -f "$ERL_TOP/erts/CONF_INFO" || echo "" > "$ERL_TOP/erts/CONF_INFO" @@ -1085,26 +1067,15 @@ test $DIRTY_SCHEDULER_TEST != yes || { EOF } -if test $ERTS_BUILD_SMP_EMU = yes; then +test "X$smp_require_native_atomics" = "Xyes" && + AC_DEFINE(ETHR_SMP_REQUIRE_NATIVE_IMPLS, 1, [Define if you want to enable check for native ethread implementations]) - DEFAULT_FLAVOR=smp - FLAVORS="$FLAVORS smp" - - if test $found_threads = no; then - AC_MSG_ERROR([cannot build smp enabled emulator since no thread library was found]) - fi - - AC_DEFINE(ERTS_HAVE_SMP_EMU, 1, [Define if the smp emulator is built]) - - test "X$smp_require_native_atomics" = "Xyes" && - AC_DEFINE(ETHR_SMP_REQUIRE_NATIVE_IMPLS, 1, [Define if you want to enable check for native ethread implementations]) - - case "$ethr_have_native_atomics-$smp_require_native_atomics-$ethr_have_native_spinlock" in - yes-*) - if test "$ethr_native_atomic_implementation" = "gcc_sync"; then - test -f "$ERL_TOP/erts/CONF_INFO" || - echo "" > "$ERL_TOP/erts/CONF_INFO" - cat >> $ERL_TOP/erts/CONF_INFO <<EOF +case "$ethr_have_native_atomics-$smp_require_native_atomics-$ethr_have_native_spinlock" in + yes-*) + if test "$ethr_native_atomic_implementation" = "gcc_sync"; then + test -f "$ERL_TOP/erts/CONF_INFO" || + echo "" > "$ERL_TOP/erts/CONF_INFO" + cat >> $ERL_TOP/erts/CONF_INFO <<EOF WARNING: Only gcc's __sync_* builtins available for @@ -1121,18 +1092,18 @@ if test $ERTS_BUILD_SMP_EMU = yes; then more information. EOF - fi - ;; + fi + ;; - no-yes-*) - AC_MSG_ERROR([No native atomic implementation found. See the \"Atomic Memory Operations and the VM\" chapter of \$ERL_TOP/HOWTO/INSTALL.md for more information.]) - ;; + no-yes-*) + AC_MSG_ERROR([No native atomic implementation found. See the \"Atomic Memory Operations and the VM\" chapter of \$ERL_TOP/HOWTO/INSTALL.md for more information.]) + ;; - no-no-yes) + no-no-yes) - test -f "$ERL_TOP/erts/CONF_INFO" || - echo "" > "$ERL_TOP/erts/CONF_INFO" - cat >> $ERL_TOP/erts/CONF_INFO <<EOF + test -f "$ERL_TOP/erts/CONF_INFO" || + echo "" > "$ERL_TOP/erts/CONF_INFO" + cat >> $ERL_TOP/erts/CONF_INFO <<EOF No native atomic implementation available. Fallbacks implemented using spinlocks will be @@ -1141,13 +1112,12 @@ EOF this. EOF - ;; - - no-no-no) + ;; - test -f "$ERL_TOP/erts/CONF_INFO" || - echo "" > "$ERL_TOP/erts/CONF_INFO" - cat >> "$ERL_TOP/erts/CONF_INFO" <<EOF + no-no-no) + test -f "$ERL_TOP/erts/CONF_INFO" || + echo "" > "$ERL_TOP/erts/CONF_INFO" + cat >> "$ERL_TOP/erts/CONF_INFO" <<EOF No native atomic implementation, nor no native spinlock implementation available. Fallbacks @@ -1156,76 +1126,11 @@ EOF will suffer immensely due to this. EOF - ;; - - esac - - enable_threads=force -fi - -AC_SUBST(ERTS_BUILD_SMP_EMU) - -ERTS_BUILD_PLAIN_EMU=$enable_plain_emulator -AC_MSG_CHECKING(whether an emulator without smp support should be built) -case $ERTS_BUILD_PLAIN_EMU in - yes) - AC_MSG_RESULT(yes; enabled by user) - ;; - no) - AC_MSG_RESULT(no; disabled by user) ;; - unknown) - case "$enable_threads-$ERTS_BUILD_SMP_EMU" in - no-*) - ERTS_BUILD_PLAIN_EMU=yes - AC_MSG_RESULT(yes) - ;; - *-no) - ERTS_BUILD_PLAIN_EMU=yes - AC_MSG_RESULT(yes; enabled as smp emulator was disabled) - ;; - *) - ERTS_BUILD_PLAIN_EMU=no - AC_MSG_RESULT(no) - ;; - esac - ;; -esac - -case $ERTS_BUILD_PLAIN_EMU in - yes) - AC_DEFINE(ERTS_HAVE_PLAIN_EMU, 1, [Define if the non-smp emulator is built]) - FLAVORS="$FLAVORS plain" - test -f "$ERL_TOP/erts/CONF_INFO" || echo "" > "$ERL_TOP/erts/CONF_INFO" - cat >> $ERL_TOP/erts/CONF_INFO <<EOF - The PLAIN aka NON-SMP emulator has been enabled. - This is a DEPRECATED feature scheduled for removal - in a future major release. - -EOF - ;; - no) - ;; esac - -AC_SUBST(ERTS_BUILD_PLAIN_EMU) -AC_SUBST(FLAVORS) AC_SUBST(TYPES) -case "$ERTS_BUILD_PLAIN_EMU-$ERTS_BUILD_SMP_EMU" in - no-no) - AC_MSG_ERROR([both smp and non-smp emulators have been disabled, one of them has to be enabled]) - ;; - *-no) - DEFAULT_FLAVOR=plain - ;; - *) - ;; -esac - -AC_SUBST(DEFAULT_FLAVOR) - AC_CHECK_FUNCS([posix_fadvise closefrom]) AC_CHECK_HEADERS([linux/falloc.h]) dnl * Old glibcs have broken fallocate64(). Make sure not to use it. @@ -1285,121 +1190,65 @@ if test $i_cv_posix_fallocate_works = yes; then fi # -# Figure out if the emulator should use threads. The default is set above -# in the enable_threads variable. It can have the following values: -# -# no single-threaded emulator requested -# yes multi-threaded emulator requested -# force multi-threaded emulator required -# # EMU_THR_LIB_NAME, EMU_THR_LIBS, EMU_THR_X_LIBS, and EMU_THR_DEFS is # used by the emulator, and can (but should not) be used by applications # that only require thread support when the emulator has thread support. # Other applications should use ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS, # and ETHR_DEFS. # -AC_MSG_CHECKING(whether the emulator should use threads) EMU_THR_LIB_NAME= EMU_THR_X_LIBS= EMU_THR_LIBS= EMU_THR_DEFS= -emu_threads=no - -case "$enable_threads"-"$host_os" in - *-win32) - # The windows erlang emulator can never run without threads. - # It has to be enabled or the emulator will crash. Until that - # is fixed we force threads on win32. - enable_threads=force ;; - yes-osf*) - # The emulator hang when threads are enabled on osf - AC_MSG_ERROR(unresolved problems exist with threads on this platform) ;; - *) ;; -esac -case "$enable_threads"-"$found_threads" in - force-yes) - emu_threads=yes - AC_MSG_RESULT(yes; thread support required and therefore forced) ;; - yes-yes) - emu_threads=yes - AC_MSG_RESULT(yes; enabled by user) ;; - unknown-yes) - case $host_os in - solaris*|linux*|darwin*|win32) - emu_threads=yes - AC_MSG_RESULT(yes; default on this platform) - ;; - *) - AC_MSG_RESULT(no; default on this platform) - ;; - esac - ;; - no-yes) - AC_MSG_RESULT(no; thread support found but disabled by user) ;; - unknown-no|no-no) - AC_MSG_RESULT(no) ;; - force-no) - AC_MSG_ERROR(thread support required but not found) ;; - yes-no) - AC_MSG_ERROR(thread support enabled by user but not found) ;; - *) - AC_MSG_ERROR(internal error) ;; -esac +# Threads enabled for emulator +EMU_THR_LIB_NAME=$ETHR_LIB_NAME +EMU_THR_X_LIBS=$ETHR_X_LIBS +EMU_THR_LIBS=$ETHR_LIBS +EMU_THR_DEFS=$ETHR_DEFS +ENABLE_ALLOC_TYPE_VARS="$ENABLE_ALLOC_TYPE_VARS threads" +AC_MSG_CHECKING(whether lock checking should be enabled) +AC_MSG_RESULT($enable_lock_check) +if test "x$enable_lock_check" != "xno"; then + EMU_THR_DEFS="$EMU_THR_DEFS -DERTS_ENABLE_LOCK_CHECK" +fi -if test $emu_threads != yes; then - enable_lock_check=no - enable_lock_count=no -else - # Threads enabled for emulator - EMU_THR_LIB_NAME=$ETHR_LIB_NAME - EMU_THR_X_LIBS=$ETHR_X_LIBS - EMU_THR_LIBS=$ETHR_LIBS - EMU_THR_DEFS=$ETHR_DEFS - ENABLE_ALLOC_TYPE_VARS="$ENABLE_ALLOC_TYPE_VARS threads" - AC_MSG_CHECKING(whether lock checking should be enabled) - AC_MSG_RESULT($enable_lock_check) - if test "x$enable_lock_check" != "xno"; then - EMU_THR_DEFS="$EMU_THR_DEFS -DERTS_ENABLE_LOCK_CHECK" - fi +AC_MSG_CHECKING(whether lock counters should be enabled) +AC_MSG_RESULT($enable_lock_count) +if test "x$enable_lock_count" != "xno"; then + TYPES="$TYPES lcnt" +fi - AC_MSG_CHECKING(whether lock counters should be enabled) - AC_MSG_RESULT($enable_lock_count) - if test "x$enable_lock_count" != "xno"; then - TYPES="$TYPES lcnt" +case $host_os in + linux*) + AC_MSG_CHECKING([whether dlopen() needs to be called before first call to dlerror()]) + if test "x$ETHR_THR_LIB_BASE_TYPE" != "xposix_nptl"; then + AC_DEFINE(ERTS_NEED_DLOPEN_BEFORE_DLERROR,[1], + [Define if dlopen() needs to be called before first call to dlerror()]) + AC_MSG_RESULT(yes) + else + AC_MSG_RESULT(no) fi + ;; + *) + ;; +esac - case $host_os in - linux*) - AC_MSG_CHECKING([whether dlopen() needs to be called before first call to dlerror()]) - if test "x$ETHR_THR_LIB_BASE_TYPE" != "xposix_nptl"; then - AC_DEFINE(ERTS_NEED_DLOPEN_BEFORE_DLERROR,[1], - [Define if dlopen() needs to be called before first call to dlerror()]) - AC_MSG_RESULT(yes) - else - AC_MSG_RESULT(no) - fi - ;; - *) - ;; - esac - - # Remove -D_WIN32_WINNT*, -DWINVER* and -D_GNU_SOURCE from EMU_THR_DEFS - # (defined in CFLAGS). Note that we want to keep these flags - # in ETHR_DEFS, but not in EMU_THR_DEFS. - new_emu_thr_defs= - for thr_def in $EMU_THR_DEFS; do - case $thr_def in - -D_GNU_SOURCE*|-D_WIN32_WINNT*|-DWINVER*) - ;; - *) - new_emu_thr_defs="$new_emu_thr_defs $thr_def" - ;; - esac - done - EMU_THR_DEFS=$new_emu_thr_defs -fi +# Remove -D_WIN32_WINNT*, -DWINVER* and -D_GNU_SOURCE from EMU_THR_DEFS +# (defined in CFLAGS). Note that we want to keep these flags +# in ETHR_DEFS, but not in EMU_THR_DEFS. +new_emu_thr_defs= +for thr_def in $EMU_THR_DEFS; do + case $thr_def in + -D_GNU_SOURCE*|-D_WIN32_WINNT*|-DWINVER*) + ;; + *) + new_emu_thr_defs="$new_emu_thr_defs $thr_def" + ;; + esac +done +EMU_THR_DEFS=$new_emu_thr_defs AC_SUBST(EMU_THR_LIB_NAME) AC_SUBST(EMU_THR_X_LIBS) @@ -2451,9 +2300,6 @@ extern char end; #elif defined(HAVE__END_SYMBOL) extern char _end; #endif -#ifndef USE_THREADS -#undef ETHR_PTHREADS -#endif #ifdef ETHR_PTHREADS # ifdef ETHR_HAVE_PTHREAD_H @@ -2687,10 +2533,6 @@ extern char _end; # error no 'end' nor '_end' #endif -#ifndef USE_THREADS -#undef ETHR_PTHREADS -#endif - #ifdef ETHR_PTHREADS # ifdef ETHR_HAVE_PTHREAD_H # include <pthread.h> @@ -2920,6 +2762,20 @@ if test X${enable_hipe} = Xyes && test X$ARCH = Xamd64; then LDFLAGS=$saved_LDFLAGS])])]) fi +if test X${enable_hipe} = Xyes; then + case $OPSYS in + linux) + ppcBEAMLDFLAGS="-Wl,-m,elf32ppc" + ppc64BEAMLDFLAGS="-Wl,-m,elf64ppc,-T,hipe/elf64ppc.x" + ;; + darwin) + amd64BEAMLDFLAGS="-pagezero_size 0x10000000" + ;; + esac + archVarName="${ARCH}BEAMLDFLAGS" + eval HIPEBEAMLDFLAGS=\$$archVarName +fi +AC_SUBST(HIPEBEAMLDFLAGS) if test X${enable_fp_exceptions} = Xauto ; then case $host_os in @@ -3483,10 +3339,7 @@ esac fi fi - - - - +AC_SUBST(FPE) dnl @@ -3620,62 +3473,24 @@ case $poll_works-$host_os in esac # -# If kqueue() found, check that it can be selected or polled on... +# If kqueue() found # if test $have_kernel_poll = kqueue; then - if test $poll_works = yes; then - kqueue_with=poll - else - kqueue_with=select - fi - AC_MSG_CHECKING([whether kqueue() fd can be ${kqueue_with}()ed on]) - AC_TRY_RUN([ -#include <stdlib.h> -#include <sys/types.h> -#include <sys/event.h> -#include <sys/time.h> -#ifdef ERTS_USE_POLL -#include <poll.h> -#else -#include <unistd.h> -#endif -int main(void) { - int kq = kqueue(); - if (kq < 0) return 2; - { -#ifdef ERTS_USE_POLL - struct pollfd pfds = {kq, POLLIN, 0}; - if (poll(&pfds, 1, 0) < 0) return 1; -#else - struct timeval tv = {0, 0}; - fd_set set; FD_ZERO(&set); FD_SET(kq, &set); - if (select(kq+1, &set, NULL, NULL, &tv) < 0) return 1; -#endif - } - return 0; -} - ], - ok_kqueue=yes, - ok_kqueue=no, - [ - case X$erl_xcomp_kqueue in - X) ok_kqueue=cross;; - Xyes|Xno) ok_kqueue=$erl_xcomp_kqueue;; - *) AC_MSG_ERROR([Bad erl_xcomp_kqueue value: $erl_xcomp_kqueue]);; - esac - ]) - AC_MSG_RESULT($ok_kqueue); - case $ok_kqueue in - yes) - ;; - cross) - have_kernel_poll=no - AC_MSG_WARN([result no guessed because of cross compilation]);; - *) - have_kernel_poll=no;; - esac +## Some OS X kernel version seems to have bugs in them with regards to kqueue +## Disable kernel poll on those versions + AC_MSG_CHECKING([whether host os has known kqueue bugs]) + case $host_os in + # Any OS X version < 16 has known problems with using kqueue + # so we don't use it there. See erl_poll.c for details. + darwin[[0-9]].*|darwin1[[0-5]].*) + AC_MSG_RESULT([yes, disabling kernel poll]) + have_kernel_poll=no + ;; + *) + AC_MSG_RESULT([no]) + ;; + esac fi - # # If epoll() found, check that it is level triggered. # @@ -3702,6 +3517,7 @@ fi # AC_MSG_CHECKING(whether kernel poll support should be enabled) ERTS_ENABLE_KERNEL_POLL=no +ERTS_BUILD_FALLBACK_POLL=no case $enable_kernel_poll-$have_kernel_poll in no-*) AC_MSG_RESULT(no; disabled by user);; @@ -3712,11 +3528,16 @@ case $enable_kernel_poll-$have_kernel_poll in *) case $have_kernel_poll in epoll) - AC_DEFINE(HAVE_SYS_EPOLL_H, 1, [Define if you have the <sys/epoll.h> header file.]);; + AC_DEFINE(HAVE_SYS_EPOLL_H, 1, [Define if you have the <sys/epoll.h> header file.]) + ERTS_BUILD_FALLBACK_POLL=yes + ;; /dev/poll) - AC_DEFINE(HAVE_SYS_DEVPOLL_H, 1, [Define if you have <sys/devpoll.h> header file.]);; + AC_DEFINE(HAVE_SYS_DEVPOLL_H, 1, [Define if you have <sys/devpoll.h> header file.]) + ;; kqueue) - AC_DEFINE(HAVE_SYS_EVENT_H, 1, [Define if you have <sys/event.h> header file.]);; + AC_DEFINE(HAVE_SYS_EVENT_H, 1, [Define if you have <sys/event.h> header file.]) + ERTS_BUILD_FALLBACK_POLL=yes + ;; *) AC_MSG_ERROR(configure.in need to be updated);; esac @@ -3724,7 +3545,7 @@ case $enable_kernel_poll-$have_kernel_poll in AC_DEFINE(ERTS_ENABLE_KERNEL_POLL, 1, [Define if you have kernel poll and want to use it]) AC_MSG_RESULT([yes; $have_kernel_poll]);; esac -AC_SUBST(ERTS_ENABLE_KERNEL_POLL) +AC_SUBST(ERTS_BUILD_FALLBACK_POLL) AC_MSG_CHECKING([whether putenv() stores a copy of the key-value pair]) AC_TRY_RUN([ @@ -3949,6 +3770,39 @@ dnl LM_FIND_EMU_CC dnl +dnl Test whether code pointers are always short (32 bits). +dnl + +AC_MSG_CHECKING([whether the code model is small]) +saved_LDFLAGS="$LDFLAGS" +LDFLAGS="$LDFLAGS $HIPEBEAMLDFLAGS" +AC_TRY_RUN([ + #include <stdlib.h> + int main() { + if ((unsigned long long)&main < (1ull << 32)) { + exit(0); + } + exit(1); + } +], +erl_code_model_small=yes, +erl_code_model_small=no, +erl_code_model_small=no) +AC_MSG_RESULT([$erl_code_model_small]) +LDFLAGS="$saved_LDFLAGS" +case $erl_code_model_small in + yes) + AC_DEFINE(CODE_MODEL_SMALL,[1], + [Define if the code model is small (code fits below 2Gb)]) + CODE_MODEL=small + ;; + no) + CODE_MODEL=unknown + ;; +esac +AC_SUBST(CODE_MODEL) + +dnl dnl DTrace & LTTNG dnl case $DYNAMIC_TRACE_FRAMEWORK in @@ -4982,7 +4836,7 @@ AH_BOTTOM([ # endif #endif -#if defined(DEBUG) && defined(USE_THREADS) && !defined(ERTS_ENABLE_LOCK_CHECK) +#if defined(DEBUG) && !defined(ERTS_ENABLE_LOCK_CHECK) #define ERTS_ENABLE_LOCK_CHECK 1 #endif ]) |