+ [gl_cv_func_ceil_libm=])
+ if test "$gl_cv_func_ceil_libm" = "?"; then
+ save_LIBS="$LIBS"
+ LIBS="$LIBS -lm"
+ AC_TRY_LINK([
+ #ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ double x;],
+ [x = ceil(x);],
+ [gl_cv_func_ceil_libm="-lm"])
+ LIBS="$save_LIBS"
+ fi
+ ])
+ CEIL_LIBM="$gl_cv_func_ceil_libm"