Remove linker warning for examples

example/Makefile

@@ -1,8 +1,8 @@
 CC=cc -std=c99
 CFLAGS=-Wall -W -pedantic -Wshadow -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wswitch-default -Wswitch-enum -Wcast-align -Wpointer-arith -Wbad-function-cast -Wstrict-overflow=5 -Wstrict-prototypes -Winline -Wundef -Wnested-externs -Wcast-qual -Wshadow -Wunreachable-code -Wlogical-op -Wstrict-aliasing=2 -Wredundant-decls -Wold-style-definition -Wno-unused-function
 GMP_DIR=
-CPPFLAGS=-I.. -I$(GMP_DIR)/include
+CPPFLAGS=-I..
-LDFLAGS=-pthread -L$(GMP_DIR)/lib
+LDFLAGS=-pthread
 RM=rm -f
 
 .SUFFIXES: .c .exe
@@ -15,7 +15,7 @@ all: config
 
 config:
 	printf "#include <gmp.h>\nint main(void){mpz_t z; mpz_init(z); return 0;}\n" > config-test.c
-	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -lgmp config-test.c -o config-test.exe 2> /dev/null && echo "-DHAVE_GMP=1 -lgmp" > config || echo "-DHAVE_GMP=0" > config
+	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)  -I$(GMP_DIR)/include -L$(GMP_DIR)/lib -lgmp config-test.c -o config-test.exe 2> /dev/null && echo "-DHAVE_GMP=1  -I$(GMP_DIR)/include -L$(GMP_DIR)/lib -lgmp" > config || echo "-DHAVE_GMP=0" > config
 	$(RM) config-test.*
 
 clean: