aboutsummaryrefslogtreecommitdiffstats
path: root/erts/configure.in
diff options
context:
space:
mode:
Diffstat (limited to 'erts/configure.in')
-rw-r--r--erts/configure.in74
1 files changed, 72 insertions, 2 deletions
diff --git a/erts/configure.in b/erts/configure.in
index b488ba9171..9ab5b4cfd2 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -154,6 +154,14 @@ AS_HELP_STRING([--disable-smp-support], [disable smp support]),
*) 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 "$enableval" in
+ no) enable_plain_emulator=no ;;
+ *) enable_plain_emulator=yes ;;
+ esac ], enable_plain_emulator=unknown)
+
AC_ARG_ENABLE(smp-require-native-atomics,
AS_HELP_STRING([--disable-smp-require-native-atomics],
[disable the SMP requirement of a native atomic implementation]),
@@ -993,7 +1001,7 @@ else
found_threads=yes
fi
-
+FLAVORS=
ERTS_BUILD_SMP_EMU=$enable_smp_support
AC_MSG_CHECKING(whether an emulator with smp support should be built)
case $ERTS_BUILD_SMP_EMU in
@@ -1078,6 +1086,9 @@ EOF
if test $ERTS_BUILD_SMP_EMU = yes; then
+ DEFAULT_FLAVOR=smp
+ FLAVORS="$FLAVORS smp"
+
if test $found_threads = no; then
AC_MSG_ERROR([cannot build smp enabled emulator since no thread library was found])
fi
@@ -1153,6 +1164,66 @@ fi
AC_SUBST(ERTS_BUILD_SMP_EMU)
+ERTS_BUILD_PLAIN_EMU=$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 >> $ERL_TOP/erts/CONF_INFO <<EOF
+
+ The PLAIN aka NON-SMP emulator has been enabled.
+ This is a DEPRECATED feature scheduled for removal
+ in a future major release.
+
+EOF
+ ;;
+ no)
+ ;;
+esac
+
+AC_SUBST(ERTS_BUILD_PLAIN_EMU)
+AC_SUBST(FLAVORS)
+
+case "$ERTS_BUILD_PLAIN_EMU-$ERTS_BUILD_SMP_EMU" in
+ no-no)
+ AC_MSG_ERROR([both smp and non-smp emulators have been disabled, one of them has to be enabled])
+ ;;
+ *-no)
+ DEFAULT_FLAVOR=plain
+ ;;
+ *)
+ ;;
+esac
+
+AC_SUBST(DEFAULT_FLAVOR)
+
AC_CHECK_FUNCS([posix_fadvise closefrom])
AC_CHECK_HEADERS([linux/falloc.h])
dnl * Old glibcs have broken fallocate64(). Make sure not to use it.
@@ -4953,7 +5024,6 @@ AC_CONFIG_FILES([
include/internal/$host/ethread.mk:include/internal/ethread.mk.in
include/internal/$host/erts_internal.mk:include/internal/erts_internal.mk.in
lib_src/$host/Makefile:lib_src/Makefile.in
- Makefile:Makefile.in
../make/$host/otp.mk:../make/otp.mk.in
../make/$host/otp_ded.mk:../make/otp_ded.mk.in
])