Use pkg-config by default to build

src/Makefile

@@ -4,11 +4,11 @@ DESTDIR	=
 BINDIR	= $(PREFIX)/bin
 CC	= cc
 CPPFLAGSF=
-CPPFLAGS= -I $(PREFIX)/include
-CFLAGSF	= -W
+CPPFLAGS= 
+CFLAGSF	= -W `pkg-config --cflags libSystem`
 CFLAGS	= -Wall -g -O2 -pedantic
-LDFLAGSF= -lSystem
-LDFLAGS	= -L $(PREFIX)/lib -Wl,-rpath,$(PREFIX)/lib
+LDFLAGSF= `pkg-config --libs libSystem`
+LDFLAGS	= 
 RM	= rm -f
 LN	= ln -f
 MKDIR	= mkdir -p

src/project.conf

@@ -1,9 +1,9 @@
 targets=configure,makedepend
-cppflags=-I $(PREFIX)/include
-cflags_force=-W
+cppflags=
+cflags_force=-W `pkg-config --cflags libSystem`
 cflags=-Wall -g -O2 -pedantic
-ldflags_force=-lSystem
-ldflags=-L $(PREFIX)/lib -Wl,-rpath,$(PREFIX)/lib
+ldflags_force=`pkg-config --libs libSystem`
+ldflags=
 dist=Makefile,configure.h,makefile.h,settings.h
 
 [configure]