diff options
| -rw-r--r-- | configure.ac | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/configure.ac b/configure.ac index e7f91444fa..793ec0f61b 100644 --- a/configure.ac +++ b/configure.ac @@ -1066,24 +1066,34 @@ dnl runs out of paging file when we have multiple processes reserving dnl 1TB of address space, we get the following error: dnl VirtualAlloc MEM_RESERVE 1099512676352 bytes failed: The paging file is too small for this operation to complete. dnl + +AC_ARG_ENABLE(large-address-space, + [AC_HELP_STRING([--enable-large-address-space], + [Use a single large address space on 64 bit systems (enabled by default on 64 bit platforms)])], + EnableLargeAddressSpace=$enableval, + EnableLargeAddressSpace=yes +) + use_large_address_space=no if test "$ac_cv_sizeof_void_p" -eq 8 ; then - if test "$ghc_host_os" = "darwin" ; then - use_large_address_space=yes - else - AC_CHECK_DECLS([MAP_NORESERVE, MADV_FREE, MADV_DONTNEED],[],[], -[ -#include <unistd.h> -#include <sys/types.h> -#include <sys/mman.h> -#include <fcntl.h> -]) - if test "$ac_cv_have_decl_MAP_NORESERVE" = "yes" && - test "$ac_cv_have_decl_MADV_FREE" = "yes" || - test "$ac_cv_have_decl_MADV_DONTNEED" = "yes" ; then - use_large_address_space=yes - fi - fi + if test "x$EnableLargeAddressSpace" = "xyes" ; then + if test "$ghc_host_os" = "darwin" ; then + use_large_address_space=yes + else + AC_CHECK_DECLS([MAP_NORESERVE, MADV_FREE, MADV_DONTNEED],[],[], + [ + #include <unistd.h> + #include <sys/types.h> + #include <sys/mman.h> + #include <fcntl.h> + ]) + if test "$ac_cv_have_decl_MAP_NORESERVE" = "yes" && + test "$ac_cv_have_decl_MADV_FREE" = "yes" || + test "$ac_cv_have_decl_MADV_DONTNEED" = "yes" ; then + use_large_address_space=yes + fi + fi + fi fi if test "$use_large_address_space" = "yes" ; then AC_DEFINE([USE_LARGE_ADDRESS_SPACE], [1], [Enable single heap address space support]) |