From b4e467d63471422c1026c4064d8872a3667f24d0 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Wed, 14 Nov 2018 17:08:23 +0100
Subject: [PATCH] do not include tsc.h on non x86 archs (closes #211)

---
 include/villas/task.h     | 7 +++++--
 lib/task.c                | 2 --
 tests/unit/CMakeLists.txt | 5 ++++-
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/include/villas/task.h b/include/villas/task.h
index aaf2caa6c..24328b45a 100644
--- a/include/villas/task.h
+++ b/include/villas/task.h
@@ -27,7 +27,6 @@
 #include <stdint.h>
 
 #include <time.h>
-#include <villas/tsc.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -48,6 +47,10 @@ extern "C" {
   #error "Platform not supported"
 #endif
 
+#if PERIODIC_TASK_IMPL == RDTSC
+  #include <villas/tsc.h>
+#endif
+
 struct task {
 	int clock;			/**< CLOCK_{MONOTONIC,REALTIME} */
 
@@ -62,7 +65,7 @@ struct task {
 #if PERIODIC_TASK_IMPL == TIMERFD
 	int fd;				/**< The timerfd_create(2) file descriptior. */
 #elif PERIODIC_TASK_IMPL == RDTSC
-	struct tsc tsc;		/**< Initialized by tsc_init(). */
+	struct tsc tsc;			/**< Initialized by tsc_init(). */
 #endif
 };
 
diff --git a/lib/task.c b/lib/task.c
index e3effbeab..583de3076 100644
--- a/lib/task.c
+++ b/lib/task.c
@@ -30,8 +30,6 @@
 
 #if PERIODIC_TASK_IMPL == TIMERFD
   #include <sys/timerfd.h>
-#elif PERIODIC_TASK_IMPL == RDTSC
-  #include <villas/tsc.h>
 #endif
 
 int task_init(struct task *t, double rate, int clock)
diff --git a/tests/unit/CMakeLists.txt b/tests/unit/CMakeLists.txt
index 4ca244170..49b90abe8 100644
--- a/tests/unit/CMakeLists.txt
+++ b/tests/unit/CMakeLists.txt
@@ -41,10 +41,13 @@ if(CRITERION_FOUND)
 		task.c
 		timing.c
 		utils.c
-		tsc.c
 		hash_table.c
 	)
 
+	if(ARCH STREQUAL "x86_64")
+		list(APPEND TEST_SRC tsc.c)
+	endif()
+
 	add_executable(unit-tests ${TEST_SRC})
 	target_link_libraries(unit-tests PUBLIC
 		PkgConfig::CRITERION