Index: uspace/lib/posix/Makefile
===================================================================
--- uspace/lib/posix/Makefile	(revision 2463df96bddf2aaf81fa87e49bc02ae36dad068d)
+++ uspace/lib/posix/Makefile	(revision d52ab7be66f720e789575e048109add865242a82)
@@ -36,4 +36,5 @@
 
 INCLUDE_LIBC = ./include/libc
+INCLUDE_LIBMATH = ./include/libmath
 
 LIBC_FILE = $(LIBC_PREFIX)/libc.a
@@ -46,7 +47,7 @@
 COLLISIONS_LIST = collisions.list
 
-PRE_DEPEND = $(INCLUDE_LIBC)
+PRE_DEPEND = $(INCLUDE_LIBC) $(INCLUDE_LIBMATH)
 EXTRA_CLEAN = \
-	$(INCLUDE_LIBC) \
+	$(INCLUDE_LIBC) $(INCLUDE_LIBMATH) \
 	$(REDEFS_HIDE_LIBC) $(REDEFS_SHOW_LIBPOSIX) \
 	$(COLLISIONS_LIST)
@@ -84,4 +85,7 @@
 	ln -s -f -n ../$^ $@
 
+$(INCLUDE_LIBMATH): ../math/include
+	ln -s -f -n ../$^ $@
+
 $(FIXED_C_LIBRARY): $(REDEFS_HIDE_LIBC) $(REDEFS_SHOW_LIBPOSIX)
 	$(OBJCOPY) --redefine-syms=$(REDEFS_HIDE_LIBC) $(LIBC_FILE) $@