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| author | Sverker Eriksson <[email protected]> | 2016-01-07 17:14:04 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-01-07 17:14:04 +0100 |
| commit | 03b00985c181f90a927b9af5316d27a534398c24 (patch) | |
| tree | 83a1c04330720410b79c832eb29aaafe0024834d | |
| parent | b171caedbf3ebdab8ad144f015287ca2cc30d5da (diff) | |
| download | otp-03b00985c181f90a927b9af5316d27a534398c24.tar.gz otp-03b00985c181f90a927b9af5316d27a534398c24.tar.bz2 otp-03b00985c181f90a927b9af5316d27a534398c24.zip | |
erts: Add config test for MAP_NORESERVE for hipe on 64-bit
to get a nicer error on FreeBSD and others that does not support
MAP_NORESERVE for mmap.
Q: How to support this?
A: Implement the "literal tag" in hipe
or another way to reserve virtual address space in erl_mmap.c
| -rw-r--r-- | erts/configure.in | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in index 20075b08c9..2f19c0f760 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -2765,6 +2765,21 @@ LM_SYS_IPV6 LM_SYS_MULTICAST ERL_TIME_CORRECTION AC_CHECK_PROG(M4, m4, m4) + + +dnl HiPE cannot run on 64-bit without MAP_FIXED and MAP_NORESERVE +if test X${enable_hipe} != Xno && test X$ac_cv_sizeof_void_p != X4; then + AC_CHECK_DECLS([MAP_FIXED, MAP_NORESERVE], [], [], [#include <sys/mman.h>]) + if test X$ac_cv_have_decl_MAP_FIXED != Xyes || test X$ac_cv_have_decl_MAP_NORESERVE != Xyes; then + if test X${enable_hipe} = Xyes; then + AC_MSG_ERROR([HiPE on 64-bit needs MAP_FIXED and MAP_NORESERVE flags for mmap()]) + else + enable_hipe=no + AC_MSG_WARN([Disable HiPE due to lack of MAP_FIXED and MAP_NORESERVE flags for mmap()]) + fi + fi +fi + dnl check to auto-enable hipe here... if test "$cross_compiling" != "yes" && test X${enable_hipe} != Xno; then if test -z "$M4"; then |