# Check for strnlen()
dnl AC_CHECK_FUNC isn't properly respecting _XOPEN_SOURCE for strnlen for unknown reason
AC_SUBST(BSON_HAVE_STRNLEN, 0)
AC_CACHE_CHECK([for strnlen],
  bson_cv_have_strnlen,
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <string.h>
int strnlen () { return 0; }
]])],
    [bson_cv_have_strnlen=no],
    [bson_cv_have_strnlen=yes])])
if test "$bson_cv_have_strnlen" = yes; then
    AC_SUBST(BSON_HAVE_STRNLEN, 1)
fi

# Check for snprintf()
AC_SUBST(BSON_HAVE_SNPRINTF, 0)
AC_CHECK_FUNC(snprintf, [AC_SUBST(BSON_HAVE_SNPRINTF, 1)])

# Check for strlcpy()
AC_SUBST(BSON_HAVE_STRLCPY, 0)
AC_CHECK_FUNC(strlcpy, [AC_SUBST(BSON_HAVE_STRLCPY, 1)])

# Check for struct timespec
AC_SUBST(BSON_HAVE_TIMESPEC, 0)
AC_CHECK_TYPE([struct timespec], [AC_SUBST(BSON_HAVE_TIMESPEC, 1)], [], [#include <time.h>])

# Check for clock_gettime and if it needs -lrt
AC_SUBST(BSON_HAVE_CLOCK_GETTIME, 0)
AC_SEARCH_LIBS([clock_gettime], [rt], [AC_SUBST(BSON_HAVE_CLOCK_GETTIME, 1)])
# Check if math functions need -lm
AC_SEARCH_LIBS([floor], [m])

# Check for gmtime_r()
AC_SUBST(BSON_HAVE_GMTIME_R, 0)
AC_CHECK_FUNC(gmtime_r, [AC_SUBST(BSON_HAVE_GMTIME_R, 1)])

# Check for rand_r()
AC_SUBST(BSON_HAVE_RAND_R, 0)
AC_CHECK_FUNC(rand_r, [AC_SUBST(BSON_HAVE_RAND_R, 1)])

# Check for pthreads. We might need to make this better to handle mingw,
# but I actually think it is okay to just check for it even though we will
# use win32 primatives.
AX_PTHREAD([
  PHP_MONGODB_BUNDLED_CFLAGS="$PHP_MONGODB_BUNDLED_CFLAGS $PTHREAD_CFLAGS"
  PHP_EVAL_LIBLINE([$PTHREAD_LIBS],[MONGODB_SHARED_LIBADD])

  # PTHREAD_CFLAGS may come back as "-pthread", which should also be used when
  # linking. We can trust PHP_EVAL_LIBLINE to ignore other values.
  PHP_EVAL_LIBLINE([$PTHREAD_CFLAGS],[MONGODB_SHARED_LIBADD])
],[
  AC_MSG_ERROR([libbson requires pthreads on non-Windows platforms.])
])

# Check for aligned_alloc()
AC_SUBST(BSON_HAVE_ALIGNED_ALLOC, 0)
AC_CHECK_FUNC(aligned_alloc, [AC_SUBST(BSON_HAVE_ALIGNED_ALLOC, 1)])