diff options
| -rw-r--r-- | HOWTO/INSTALL-CROSS.md | 5 | ||||
| -rw-r--r-- | erts/configure.in | 30 | ||||
| -rw-r--r-- | xcomp/erl-xcomp-vars.sh | 2 | ||||
| -rw-r--r-- | xcomp/erl-xcomp.conf.template | 6 |
4 files changed, 41 insertions, 2 deletions
diff --git a/HOWTO/INSTALL-CROSS.md b/HOWTO/INSTALL-CROSS.md index a5cf775583..03ea4c6e76 100644 --- a/HOWTO/INSTALL-CROSS.md +++ b/HOWTO/INSTALL-CROSS.md @@ -515,6 +515,11 @@ When a variable has been set, no warning will be issued. * `erl_xcomp_reliable_fpe` - `yes|no`. Defaults to `no`. If `yes`, the target system must have reliable floating point exceptions. +* `erl_xcomp_posix_memalign` - `yes|no`. Defaults to `yes` if `posix_memalign` + system call exists; otherwise `no`. If `yes`, the target system must have a + `posix_memalign` implementation that accepts larger than page size + alignment. + Copyright and License --------------------- diff --git a/erts/configure.in b/erts/configure.in index f17f4cb5c8..8288a1aab1 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -1974,11 +1974,39 @@ AC_CHECK_FUNCS([getipnodebyname getipnodebyaddr gethostbyname2]) AC_CHECK_FUNCS([ieee_handler fpsetmask finite isnan isinf res_gethostbyname dlopen \ pread pwrite memmove strerror strerror_r strncasecmp \ - gethrtime localtime_r gmtime_r inet_pton posix_memalign \ + gethrtime localtime_r gmtime_r inet_pton \ mmap mremap memcpy mallopt sbrk _sbrk __sbrk brk _brk __brk \ flockfile fstat strlcpy strlcat setsid posix2time time2posix \ setlocale nl_langinfo poll]) + +case X$erl_xcomp_posix_memalign in + Xno) ;; + Xyes) AC_DEFINE(HAVE_POSIX_MEMALIGN,[1], + [Define to 1 if you have the `posix_memalign' function.]) ;; + *) + AC_CHECK_FUNC( + [posix_memalign], + [if test "$cross_compiling" != yes; then +AC_TRY_RUN([ +#include <stdlib.h> +int main(void) { + void *ptr = NULL; + int error; + size_t alignment = 0x40000, size = 0x20028; + if ((error = posix_memalign(&ptr, alignment, size)) != 0 || ptr == NULL) + return error; + return 0; +} +],AC_DEFINE(HAVE_POSIX_MEMALIGN,[1], + [Define to 1 if you have the `posix_memalign' function.]) +) + else + AC_DEFINE(HAVE_POSIX_MEMALIGN,[1], + [Define to 1 if you have the `posix_memalign' function.]) + fi]);; +esac + dnl writev on OS X snow leopard is broken for files > 4GB case $host_os in darwin10.8.0) diff --git a/xcomp/erl-xcomp-vars.sh b/xcomp/erl-xcomp-vars.sh index eccdff47e3..337e0fb809 100644 --- a/xcomp/erl-xcomp-vars.sh +++ b/xcomp/erl-xcomp-vars.sh @@ -26,4 +26,4 @@ # and precious variables in $ERL_TOP/erts/aclocal.m4. # -erl_xcomp_vars="erl_xcomp_sysroot erl_xcomp_isysroot erl_xcomp_bigendian erl_xcomp_double_middle_endian erl_xcomp_linux_clock_gettime_correction erl_xcomp_linux_nptl erl_xcomp_linux_usable_sigusrx erl_xcomp_linux_usable_sigaltstack erl_xcomp_poll erl_xcomp_kqueue erl_xcomp_putenv_copy erl_xcomp_reliable_fpe erl_xcomp_getaddrinfo erl_xcomp_gethrvtime_procfs_ioctl erl_xcomp_clock_gettime_cpu_time erl_xcomp_after_morecore_hook erl_xcomp_dlsym_brk_wrappers" +erl_xcomp_vars="erl_xcomp_sysroot erl_xcomp_isysroot erl_xcomp_bigendian erl_xcomp_double_middle_endian erl_xcomp_linux_clock_gettime_correction erl_xcomp_linux_nptl erl_xcomp_linux_usable_sigusrx erl_xcomp_linux_usable_sigaltstack erl_xcomp_poll erl_xcomp_kqueue erl_xcomp_putenv_copy erl_xcomp_reliable_fpe erl_xcomp_getaddrinfo erl_xcomp_gethrvtime_procfs_ioctl erl_xcomp_clock_gettime_cpu_time erl_xcomp_after_morecore_hook erl_xcomp_dlsym_brk_wrappers erl_xcomp_posix_memalign" diff --git a/xcomp/erl-xcomp.conf.template b/xcomp/erl-xcomp.conf.template index 7d70332cef..ad72b7d66b 100644 --- a/xcomp/erl-xcomp.conf.template +++ b/xcomp/erl-xcomp.conf.template @@ -264,4 +264,10 @@ # system must have reliable floating point exceptions. #erl_xcomp_reliable_fpe= +# * `erl_xcomp_posix_memalign' - `yes|no'. Defaults to `yes' if `posix_memalign' +# system call exists; otherwise `no'. If `yes', the target system must have a +# `posix_memalign' implementation that accepts larger than page size +# alignment. +#erl_xcomp_posix_memalign= + ## ----------------------------------------------------------------------------- |