Fixed to build examples with knowledge of include and lib locations.

examples/Makefile

+.PHONY: all
+
+CFLAGS = -g -I../include
+LFLAGS = -Ldirectory-containing-libgit
+
 all: general showindex
 
 general : general.c
-		gcc -lgit2 -o general general.c
+	gcc -o general $(CFLAGS) general.c $(LFLAGS) -lgit2 -lz
 
 showindex : showindex.c
-		gcc -lgit2 -o showindex showindex.c
+	gcc -o showindex $(CFLAGS) showindex.c $(LFLAGS) -lgit2 -lz
 
 clean:
-		rm general showindex
+	rm general showindex