re PR other/46840 (libgo should link against libm)
PR other/46840
Link libgo against -lm.
From-SVN: r167582
diff --git a/libgo/configure.ac b/libgo/configure.ac
index db74974..d2cc290 100644
--- a/libgo/configure.ac
+++ b/libgo/configure.ac
@@ -187,6 +187,11 @@
[Define if the linker support split stack adjustments])
fi
+dnl Test for the -lm library.
+MATH_LIBS=
+AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
+AC_SUBST(MATH_LIBS)
+
dnl Test whether the compiler supports the -pthread option.
AC_CACHE_CHECK([whether -pthread is supported],
[ac_cv_libgo_pthread_supported],