case "${host_cpu}-${host_os}" in
*-aix* | *-freebsd* | *-darwin*) x_rflag="-D_THREAD_SAFE";;
*solaris* | *-osf* | *-hpux*) x_rflag="-D_REENTRANT";;
- *-linux*)
+ *-linux* | *-k*bsd*-gnu*)
if test x"$PTHREAD_CFLAGS" = "x-pthread"; then
# For Linux/gcc "-pthread" implies "-lpthread". We need, however, to make this explicit
# in PTHREAD_LIBS such that a shared library to be built properly depends on libpthread.
#endif
/* solaris 10 it defines isnan such that only forte can compile it ... bad bad */
-#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS))
+#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS) && defined(FP_SNAN) && defined(FP_QNAN))
# undef isnan
# define isnan(a) (fpclass(a) == FP_SNAN || fpclass(a) == FP_QNAN)
#endif
/* Digital UNIX */
-#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H))
+#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H) && defined(FP_NEG_INF) && defined( FP_POS_INF) )
# define HAVE_ISINF 1
# define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
#endif
# define isinf(a) (fpclassify(a) == FP_INFINITE)
#endif
+#if HAVE_MATH_H
+#include <math.h>
+#endif
+
#include <stdio.h>
int main(void){
double rrdnan,rrdinf,rrdc,rrdzero;