diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa4cac6b4..90b60ae09 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,6 +62,12 @@ else()
     add_compile_options(-Wall -Werror)
 endif()
 
+execute_process( 
+	COMMAND uname -m
+	COMMAND tr -d '\n'
+	OUTPUT_VARIABLE ARCH
+)
+
 # Check OS
 check_include_file("sys/eventfd.h" HAS_EVENTFD)
 check_include_file("semaphore.h" HAS_SEMAPHORE)
@@ -75,7 +81,6 @@ endif()
 # Check packages
 find_package(PkgConfig REQUIRED)
 find_package(Threads REQUIRED)
-find_package(Libwebsockets 2.3.0 REQUIRED)
 find_package(OpenSSL 1.0.0 REQUIRED)
 find_package(CURL 7.29 REQUIRED)
 find_package(Mosquitto)
@@ -100,6 +105,7 @@ pkg_check_modules(RABBITMQ_C IMPORTED_TARGET librabbitmq>=0.8.0)
 pkg_check_modules(COMEDILIB IMPORTED_TARGET comedilib>=0.11.0)
 pkg_check_modules(LIBZMQ IMPORTED_TARGET libzmq>=2.2.0)
 pkg_check_modules(ULDAQ IMPORTED_TARGET libuldaq>=1.0.0)
+pkg_check_modules(LIBWEBSOCKETS IMPORTED_TARGET libwebsockets>=2.3.0)
 pkg_check_modules(NANOMSG IMPORTED_TARGET nanomsg)
 if(NOT NANOMSG_FOUND)
     pkg_check_modules(NANOMSG IMPORTED_TARGET libnanomsg>=1.0.0)
diff --git a/include/villas/log.h b/include/villas/log.h
index 36ce7aead..031c16d11 100644
--- a/include/villas/log.h
+++ b/include/villas/log.h
@@ -74,7 +74,7 @@ enum log_facilities {
 	LOG_WEBSOCKET =		(1L << 29),
 	LOG_OPAL =		(1L << 30),
 	LOG_COMEDI =		(1L << 31),
-	LOG_IB =		(1L << 32),
+	LOG_IB =		(1LL << 32),
 
 	/* Classes */
 	LOG_NODES =	LOG_NODE | LOG_SOCKET | LOG_FILE | LOG_FPGA | LOG_NGSI | LOG_WEBSOCKET | LOG_OPAL | LOG_IB,
@@ -148,7 +148,7 @@ void log_print(struct log *l, const char *lvl, const char *fmt, ...)
 void log_vprint(struct log *l, const char *lvl, const char *fmt, va_list va);
 
 /** Printf alike debug message with level. */
-void debug(long lvl, const char *fmt, ...)
+void debug(long long lvl, const char *fmt, ...)
 	__attribute__ ((format(printf, 2, 3)));
 
 /** Printf alike info message. */
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 3cfec4f2f..9015ef96d 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -34,6 +34,7 @@ set(LIBRARIES
     PkgConfig::JANSSON
     ${OPENSSL_LIBRARIES}
     ${CURL_LIBRARIES}
+    m
 )
 
 set(LIB_SRC
@@ -72,9 +73,13 @@ set(LIB_SRC
     table.c
     bitset.c
     signal.c
-    tsc.c
 )
 
+
+if(ARCH STREQUAL "x86_64")
+	list(APPEND LIB_SRC tsc.c)
+endif()
+
 if(IBVERBS_FOUND AND RDMACM_FOUND)
     list(APPEND LIB_SRC memory/ib.c)
 endif()
@@ -113,7 +118,7 @@ if(WITH_WEB)
     )
     
     list(APPEND INCLUDE_DIRS ${LIBWEBSOCKETS_INCLUDE_DIRS})
-    list(APPEND LIBRARIES websockets_shared)
+    list(APPEND LIBRARIES PkgConfig::LIBWEBSOCKETS)
 endif()
 
 if(WITH_API AND WITH_WEB)
diff --git a/lib/kernel/kernel.c b/lib/kernel/kernel.c
index aa9dacd19..08538c8ab 100644
--- a/lib/kernel/kernel.c
+++ b/lib/kernel/kernel.c
@@ -38,7 +38,7 @@
 
 int kernel_get_cacheline_size()
 {
-#ifdef __linux__
+#if defined(__linux__) && defined(__x86_64__)
 	return sysconf(_SC_LEVEL1_ICACHE_LINESIZE);
 #else
 	return 64; /** @todo fixme */
diff --git a/lib/log.c b/lib/log.c
index 66627a129..d472db6c7 100644
--- a/lib/log.c
+++ b/lib/log.c
@@ -216,7 +216,7 @@ int log_set_facility_expression(struct log *l, const char *expression)
 {
 	bool negate;
 	char *copy, *token;
-	long mask = 0, facilities = 0;
+	long long mask = 0, facilities = 0;
 
 	copy = strdup(expression);
 	token = strtok(copy, ",");
diff --git a/lib/log_helper.c b/lib/log_helper.c
index e263ee0c6..3a90e6090 100644
--- a/lib/log_helper.c
+++ b/lib/log_helper.c
@@ -27,7 +27,7 @@
 #include <villas/utils.h>
 #include <villas/log.h>
 
-void debug(long class, const char *fmt, ...)
+void debug(long long class, const char *fmt, ...)
 {
 	va_list ap;
 
diff --git a/lib/memory.c b/lib/memory.c
index 436527198..24eb0b952 100644
--- a/lib/memory.c
+++ b/lib/memory.c
@@ -53,7 +53,7 @@ int memory_init(int hugepages)
 {
 	info("Initialize memory sub-system: #hugepages=%d", hugepages);
 
-#ifdef __linux__
+#if defined(__linux__) && defined(__x86_64__)
 	int pagecnt, pagesz, ret;
 	struct rlimit l;
 
@@ -85,7 +85,7 @@ int memory_init(int hugepages)
 	if (l.rlim_cur < lock) {
 		if (l.rlim_max < lock) {
 			if (getuid() != 0) {
-				warn("Failed to in increase ressource limit of locked memory from %zu to %zu bytes", l.rlim_cur, lock);
+				warn("Failed to in increase ressource limit of locked memory from %lu to %zu bytes", l.rlim_cur, lock);
 				warn("Please re-run as super-user or raise manually via:");
 				warn("   $ ulimit -Hl %zu", lock);
 
diff --git a/lib/queue.c b/lib/queue.c
index 0b020b192..3f69079c9 100644
--- a/lib/queue.c
+++ b/lib/queue.c
@@ -44,7 +44,7 @@ int queue_init(struct queue *q, size_t size, struct memory_type *m)
 	if (!IS_POW2(size)) {
 		size_t old_size = size;
 		size = LOG2_CEIL(size);
-		warn("A queue size was changed from %lu to %lu", old_size, size);
+		warn("A queue size was changed from %zu to %zu", old_size, size);
 	}
 
 	q->buffer_mask = size - 1;
diff --git a/packaging/docker/Dockerfile.app b/packaging/docker/Dockerfile.app
index 8128abb9c..cf5229b36 100644
--- a/packaging/docker/Dockerfile.app
+++ b/packaging/docker/Dockerfile.app
@@ -42,7 +42,7 @@ RUN cmake -DCPACK_GENERATOR=RPM ..
 RUN make -j$(nproc) doc
 RUN make -j$(nproc) package
 
-FROM fedora:28
+FROM fedora:29
 	
 # Some of the dependencies are only available in our own repo
 ADD https://packages.fein-aachen.org/redhat/fein.repo /etc/yum.repos.d/
diff --git a/packaging/docker/Dockerfile.dev b/packaging/docker/Dockerfile.dev
index cebb1dc8a..9621cbd86 100644
--- a/packaging/docker/Dockerfile.dev
+++ b/packaging/docker/Dockerfile.dev
@@ -28,7 +28,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ###################################################################################
 
-FROM fedora:28
+FROM fedora:29
 
 ARG GIT_REV=unknown
 ARG GIT_BRANCH=unknown
@@ -36,12 +36,7 @@ ARG VERSION=unknown
 ARG VARIANT=unknown
 
 # Some of the dependencies are only available in our own repo
-ADD https://packages.fein-aachen.org/redhat/fein.repo /etc/yum.repos.d/
-
-# We need to use our own RPM packages of libwebsockets
-# as the official ones do contain the CMake files
-RUN dnf -y install --repo=fein \
-	libwebsockets-2.4.2
+ADD https://packages.fein-aachen.org/fedora/fein.repo /etc/yum.repos.d/
 
 # Toolchain
 RUN dnf -y install \
@@ -76,15 +71,16 @@ RUN dnf -y install \
 	libcurl-devel \
 	jansson-devel \
 	zeromq-devel \
-	nanomsg-devel \
 	protobuf-devel \
 	protobuf-c-devel \
-	libiec61850-devel \
 	librabbitmq-devel \
 	mosquitto-devel \
 	comedilib-devel comedilib \
 	libibverbs-devel \
-	librdmacm-devel
+	librdmacm-devel \
+	libwebsockets-devel \
+	nanomsg \
+	libiec61850
 
 # Build & Install Criterion
 RUN cd /tmp && \
diff --git a/src/villas-node.cpp b/src/villas-node.cpp
index 037b3f38f..3a1f8a7f0 100644
--- a/src/villas-node.cpp
+++ b/src/villas-node.cpp
@@ -117,7 +117,7 @@ int main(int argc, char *argv[])
 
 	const char *uri = "opal-shmem.conf";
 #else
-	char c;
+	int c;
 	while ((c = getopt(argc, argv, "hV")) != -1) {
 		switch (c) {
 			case 'V':
diff --git a/src/villas-pipe.cpp b/src/villas-pipe.cpp
index 81996a2c1..39733ba19 100644
--- a/src/villas-pipe.cpp
+++ b/src/villas-pipe.cpp
@@ -255,7 +255,8 @@ int main(int argc, char *argv[])
 
 	json_t *cfg_cli = json_object();
 
-	char c, *endptr;
+	int c;
+	char *endptr;
 	while ((c = getopt(argc, argv, "Vhxrsd:l:L:t:f:o:")) != -1) {
 		switch (c) {
 			case 'V':