# Copyright (C) Igor Sysoev
# Copyright (C) NGINX, Inc.


# Linux, FreeBSD, Solaris, MacOSX.

nxt_feature="MAP_ANON"
nxt_feature_name=NXT_HAVE_MAP_ANON
nxt_feature_run=yes
nxt_feature_incs=
nxt_feature_libs=
nxt_feature_test="#include <stdlib.h>
                  #include <sys/mman.h>

                  int main(void) {
                      if (mmap(NULL, 4096, PROT_READ | PROT_WRITE,
                               MAP_PRIVATE | MAP_ANON, -1, 0)
                            == MAP_FAILED)
                          return 1;
                      return 0;
                  }"
. auto/feature


if [ $nxt_found = no ]; then

    # Linux, Solaris, HP-UX.

    nxt_feature="MAP_ANONYMOUS"
    nxt_feature_name=NXT_HAVE_MAP_ANONYMOUS
    nxt_feature_run=yes
    nxt_feature_incs=
    nxt_feature_libs=
    nxt_feature_test="#include <stdlib.h>
                      #include <sys/mman.h>

                      int main(void) {
                          if (mmap(NULL, 4096, PROT_READ | PROT_WRITE,
                                   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)
                                == MAP_FAILED)
                              return 1;
                          return 0;
                      }"
    . auto/feature
fi


# Linux.

nxt_feature="MAP_POPULATE"
nxt_feature_name=NXT_HAVE_MAP_POPULATE
nxt_feature_run=no
nxt_feature_incs=
nxt_feature_libs=
nxt_feature_test="#include <stdlib.h>
                  #include <sys/mman.h>

                  int main(void) {
                      if (mmap(NULL, 4096, PROT_READ | PROT_WRITE,
                               MAP_SHARED | MAP_POPULATE, -1, 0)
                            == MAP_FAILED)
                          return 1;
                      return 0;
                  }"
. auto/feature


# FreeBSD.

nxt_feature="MAP_PREFAULT_READ"
nxt_feature_name=NXT_HAVE_MAP_PREFAULT_READ
nxt_feature_run=yes
nxt_feature_incs=
nxt_feature_libs=
nxt_feature_test="#include <stdlib.h>
                  #include <sys/mman.h>

                  int main(void) {
                      if (mmap(NULL, 4096, PROT_READ | PROT_WRITE,
                               MAP_PRIVATE | MAP_ANON | MAP_PREFAULT_READ,
                               -1, 0)
                            == MAP_FAILED)
                          return 1;
                      return 0;
                  }"
. auto/feature