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Diffstat (limited to 'm4/linux_mremap.m4')
| -rw-r--r-- | m4/linux_mremap.m4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/m4/linux_mremap.m4 b/m4/linux_mremap.m4 new file mode 100644 index 0000000..7eb0cce --- /dev/null +++ b/m4/linux_mremap.m4 @@ -0,0 +1,19 @@ +dnl * Linux compatible mremap() +AC_DEFUN([DOVECOT_LINUX_MREMAP], [ + AC_CACHE_CHECK([Linux compatible mremap()],i_cv_have_linux_mremap,[ + AC_TRY_LINK([ + #include <unistd.h> + #define __USE_GNU + #include <sys/mman.h> + ], [ + mremap(0, 0, 0, MREMAP_MAYMOVE); + ], [ + i_cv_have_linux_mremap=yes + ], [ + i_cv_have_linux_mremap=no + ]) + ]) + if test $i_cv_have_linux_mremap = yes; then + AC_DEFINE(HAVE_LINUX_MREMAP,, [Define if you have Linux-compatible mremap()]) + fi +]) |