Index: uspace/lib/c/Makefile
===================================================================
--- uspace/lib/c/Makefile	(revision c875217526e49b72322987f2e8a5476bb184f1eb)
+++ uspace/lib/c/Makefile	(revision dd870b13fb232b945ed902e68d1b6765c90370fe)
@@ -161,14 +161,14 @@
 
 $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld: $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld.in
-	$(GCC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -E -x c $< | grep -v "^\#" > $@
+	$(CC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -E -x c $< | grep -v "^\#" > $@
 
 $(LIBC_PREFIX)/arch/$(UARCH)/_link-loader.ld: $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld.in
-	$(GCC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DLOADER -E -x c $< | grep -v "^\#" > $@
+	$(CC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DLOADER -E -x c $< | grep -v "^\#" > $@
 
 $(LIBC_PREFIX)/arch/$(UARCH)/_link-shlib.ld: $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld.in
-	$(GCC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DSHLIB -E -x c $< | grep -v "^\#" > $@
+	$(CC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DSHLIB -E -x c $< | grep -v "^\#" > $@
 
 $(LIBC_PREFIX)/arch/$(UARCH)/_link-dlexe.ld: $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld.in
-	$(GCC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DDLEXE -E -x c $< | grep -v "^\#" > $@
+	$(CC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -DDLEXE -E -x c $< | grep -v "^\#" > $@
 
 $(COMMON_HEADER_ARCH): $(COMMON_HEADER)
Index: uspace/lib/c/arch/amd64/Makefile.common
===================================================================
--- uspace/lib/c/arch/amd64/Makefile.common	(revision c875217526e49b72322987f2e8a5476bb184f1eb)
+++ uspace/lib/c/arch/amd64/Makefile.common	(revision dd870b13fb232b945ed902e68d1b6765c90370fe)
@@ -28,5 +28,7 @@
 
 CLANG_ARCH = x86_64
+CLANG_TARGET = x86_64-unknown-linux
 GCC_CFLAGS += -fno-omit-frame-pointer
+CLANG_CFLAGS += -fno-omit-frame-pointer
 
 ENDIANESS = LE