https://bugs.gentoo.org/500674

random fixes:
- make sure PCRE_CFLAGS get used
- use PCRE_LIBS via pkg-config
- move LDFLAGS to before objects, not after
- do not hardcode -L$(LIBDIR) (let the toolchain handle it)
- do not hardcode -I$(INCLUDEDIR) (let the toolchain handle it)

diff -uNr libselinux-2.5.orig/src/Makefile libselinux-2.5/src/Makefile
--- libselinux-2.5.orig/src/Makefile	2016-03-13 19:27:07.091000000 +0100
+++ libselinux-2.5/src/Makefile	2016-03-13 19:27:16.495000000 +0100
@@ -73,7 +73,7 @@
           -fipa-pure-const -Wno-suggest-attribute=pure -Wno-suggest-attribute=const \
           -Werror -Wno-aggregate-return -Wno-redundant-decls
 
-override CFLAGS += -I../include -I$(INCLUDEDIR) -D_GNU_SOURCE $(EMFLAGS)
+override CFLAGS += -I../include $(PCRE_CFLAGS) -D_GNU_SOURCE $(EMFLAGS)
 
 SWIG_CFLAGS += -Wno-error -Wno-unused-variable -Wno-unused-but-set-variable -Wno-unused-parameter \
 		-Wno-shadow -Wno-uninitialized -Wno-missing-prototypes -Wno-missing-declarations
@@ -102,17 +102,17 @@
 	$(CC) $(CFLAGS) $(SWIG_CFLAGS) $(RUBYINC) -fPIC -DSHARED -c -o $@ $<
 
 $(SWIGSO): $(SWIGLOBJ)
-	$(CC) $(CFLAGS) -shared -o $@ $< -L. -lselinux $(LDFLAGS) -L$(LIBDIR)
+	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ $< -L. -lselinux
 
 $(SWIGRUBYSO): $(SWIGRUBYLOBJ)
-	$(CC) $(CFLAGS) -shared -o $@ $^ -L. -lselinux $(LDFLAGS) -L$(LIBDIR)
+	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ $^ -L. -lselinux
 
 $(LIBA): $(OBJS)
 	$(AR) rcs $@ $^
 	$(RANLIB) $@
 
 $(LIBSO): $(LOBJS)
-	$(CC) $(CFLAGS) -shared -o $@ $^ -lpcre -ldl $(LDFLAGS) -L$(LIBDIR) -Wl,-soname,$(LIBSO),-z,defs,-z,relro
+	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ $^ -ldl $(PCRE_LIBS) -Wl,-soname,$(LIBSO),-z,defs,-z,relro
 	ln -sf $@ $(TARGET) 
 
 $(LIBPC): $(LIBPC).in ../VERSION
@@ -125,7 +125,7 @@
 	$(CC) $(filter-out -Werror, $(CFLAGS)) $(PYINC) -fPIC -DSHARED -c -o $@ $<
 
 $(AUDIT2WHYSO): $(AUDIT2WHYLOBJ)
-	$(CC) $(CFLAGS) -shared -o $@ $^ -L. $(LDFLAGS) -lselinux $(LIBDIR)/libsepol.a -L$(LIBDIR)
+	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ $^ -L. -lselinux $(LIBDIR)/libsepol.a
 
 %.o:  %.c policy.h
 	$(CC) $(CFLAGS) $(TLSFLAGS) -c -o $@ $<
diff -uNr libselinux-2.5.orig/utils/Makefile libselinux-2.5/utils/Makefile
--- libselinux-2.5.orig/utils/Makefile	2016-03-13 19:27:07.102000000 +0100
+++ libselinux-2.5/utils/Makefile	2016-03-13 19:27:40.297000000 +0100
@@ -24,11 +24,12 @@
           -fipa-pure-const -Wno-suggest-attribute=pure -Wno-suggest-attribute=const \
           -Werror -Wno-aggregate-return -Wno-redundant-decls
 override CFLAGS += -I../include -D_GNU_SOURCE $(EMFLAGS)
-LDLIBS += -L../src -lselinux -L$(LIBDIR)
+LDLIBS += -L../src -lselinux
 
 TARGETS=$(patsubst %.c,%,$(wildcard *.c))
 
-sefcontext_compile: LDLIBS += -lpcre ../src/libselinux.a -lsepol
+sefcontext_compile: CFLAGS += $(PCRE_FLAGS)
+sefcontext_compile: LDLIBS += $(PCRE_LIBS) -lsepol ../src/libselinux.a
 
 selinux_restorecon: LDLIBS += -lsepol