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Diffstat (limited to 'erts/configure.in')
| -rw-r--r-- | erts/configure.in | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in index 5fa1245b13..6823133936 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -123,6 +123,14 @@ AC_ARG_ENABLE(threads, *) enable_threads=yes ;; esac ], enable_threads=unknown) +AC_ARG_ENABLE(halfword-emulator, +[ --enable-halfword-emulator enable halfword emulator (only for 64bit builds) + --disable-halfword-emulator disable halfword emulator (only for 64bit builds)], +[ case "$enableval" in + no) enable_halfword_emualtor=no ;; + *) enable_halfword_emulator=yes ;; + esac ], enable_halfword_emulator=unknown) + AC_ARG_ENABLE(smp-support, [ --enable-smp-support enable smp support --disable-smp-support disable smp support], @@ -749,6 +757,25 @@ esac AC_SUBST(LIBCARBON) +dnl Check if we should/can build a halfword emulator + +AC_MSG_CHECKING(if we are building a halfword emulator (32bit heap on 64bit machine)) +if test "$enable_halfword_emulator" = "yes"; then + if test "$ARCH" = "amd64"; then + AC_DEFINE(HALFWORD_HEAP_EMULATOR, [1], + [Define if building a halfword-heap 64bit emulator]) + AC_MSG_RESULT([yes]) + else + AC_MSG_ERROR(no; halfword emulator not supported on this architecture) + fi +else + AC_MSG_RESULT([no]) +fi + + + + + dnl some tests below will call this if we haven't already - and autoconf dnl can't handle those tests being done conditionally at runtime AC_PROG_CPP |