4 files changed, 11 insertions, 7 deletions
diff --git a/configure.ac b/configure.ac
index d81b8e6..c0b1000 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,6 +39,8 @@ AC_TYPE_SIZE_T
 dnl Find out which assembly files to compile
 AC_CANONICAL_HOST
 
+tsc=0
+
 if echo $host_cpu | grep '86$' 2>&1 >/dev/null
 then
   arch_x86=1
@@ -54,8 +56,8 @@ fi
 AM_CONDITIONAL([X86], [test "$arch_x86"])
 AM_CONDITIONAL([X86_64], [test "$arch_x86_64"])
 
-AC_DEFINE([SANDGLASS_TSC], ["$tsc"])
-AM_CONDITIONAL([TSC], [test "$tsc"])
+AC_DEFINE_UNQUOTED([SANDGLASS_TSC], [$tsc])
+AM_CONDITIONAL([TSC], [test "$tsc" -ne 0])
 
 dnl Generate Makefiles
 AC_CONFIG_MACRO_DIR([m4])
diff --git a/src/sandglass.c b/src/sandglass.c
index 7ffe511..0710788 100644
--- a/src/sandglass.c
+++ b/src/sandglass.c
@@ -58,7 +58,7 @@ sandglass_init_monotonic(sandglass_t *sandglass, sandglass_resolution_t res)
 {
   switch (res) {
   case SANDGLASS_CPUTIME:
-#ifdef SANDGLASS_TSC
+#if SANDGLASS_TSC
     sandglass->freq  = sandglass_tsc_freq();
     sandglass->loops = sandglass_tsc_loops();
     break;
@@ -120,7 +120,7 @@ sandglass_real_gettime(sandglass_t *sandglass)
     case SANDGLASS_MONOTONIC:
       switch (sandglass->resolution) {
         case SANDGLASS_CPUTIME:
-#ifdef SANDGLASS_TSC
+#if SANDGLASS_TSC
           sandglass->grains = sandglass_get_tsc();
           break;
 #else
diff --git a/src/sandglass_impl.h b/src/sandglass_impl.h
index accb332..e10562f 100644
--- a/src/sandglass_impl.h
+++ b/src/sandglass_impl.h
@@ -28,7 +28,7 @@
 #include "sandglass.h"
 #include <time.h>
 
-#ifdef SANDGLASS_TSC
+#if SANDGLASS_TSC
 /* Read the time stamp counter */
 long sandglass_get_tsc();
 /* Get the frequency of the TSC */
diff --git a/tests/monotonic-realticks.c b/tests/monotonic-realticks.c
index e3e973a..1e48ca5 100644
--- a/tests/monotonic-realticks.c
+++ b/tests/monotonic-realticks.c
@@ -36,9 +36,11 @@ main()
     return EXIT_FAILURE;
   }
 
+#if SANDGLASS_TSC
   sandglass_bench_fine(&sandglass, sandglass_get_tsc());
-
   printf("%ld\n", sandglass.grains);
-
   return EXIT_SUCCESS;
+#else
+  return EXIT_FAILURE;
+#endif
 }