Removed need of LD_LIBRARY_PATH

Makefile

@@ -4,17 +4,15 @@ PREFIX := .
 
 CP := cp -f
 
-export CFLAGS   := -std=c89 -Wall -Wextra -Wpedantic -Wshadow -Wundef
+export CFLAGS   := -std=c89 -Werror -Wall -Wextra -Wpedantic -Wshadow -Wundef
 export CPPFLAGS := -D_FORTIFY_SOURCE=2
 
-all: plug/libplug.so src/plugin
+all: plug src
 
-plug/libplug.so:
-	make -C plug
-	$(CP) $@ $(PREFIX)
+plug:
+	make -C $@
 
-src/plugin:
-	make -C src
-	$(CP) $@ $(PREFIX)
+src:
+	make -C $@
 
-.PHONY: all plug/libplug.so src/plugin
+.PHONY: all plug src

README

@@ -1,8 +1,4 @@
-Run make and LD_LIBRARY_PATH='.' ./plugin for the example.
-
-the LD_LIBRARY_PATH part could be removed by either adding
-something into your .bashrc. With some internal messing with
- get/setenv it's probably possible.
+Run make and ./plugin for the example.
 
 There's a good reason for the fragmentation and recursion of the
 Makefiles, as how the files are compiled vary at compile-time

plug/Makefile

@@ -1,4 +1,4 @@
 CFLAGS += -shared -fPIC
 
-libplug.so: plug.o
+../libplug.so: plug.o
 	${LINK.c} $+ -o $@

src/Makefile

@@ -1,5 +1,5 @@
 CPPFLAGS += -I../plug -L../plug
 LDLIBS += -ldl
 
-plugin: main.o
+../plugin: main.o
 	${LINK.c} $+ -o $@ ${LDLIBS}

src/main.c

@@ -1,4 +1,6 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <dlfcn.h>
 
@@ -8,7 +10,7 @@ int
 main (void)
 {
   int x = 0;
-  char * libplug_fn = "libplug.so";
+  char * libplug_fn = "./libplug.so";
   void * libplug = NULL;
   while (1)
   {