configure.ac:
TEST_TSEARCH_LIBM=
-AC_TRY_LINK([
- #ifndef __NO_MATH_INLINES
- # define __NO_MATH_INLINES 1 /* for glibc */
- #endif
- #include <math.h>
- double x;],
- [x = log (x);], , [TEST_TSEARCH_LIBM=-lm])
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ double x;]],
+ [[x = log (x);]])],
+ [],
+ [TEST_TSEARCH_LIBM=-lm])
AC_SUBST([TEST_TSEARCH_LIBM])
AC_CHECK_FUNCS_ONCE([initstate])