added example dlopen-able libhack.c and updated Makefile to actually be able to build segfault. was missing -ldl

2 files changed, 16 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index 56eb231..4e755c7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,15 @@
-LDFLAGS=-L/usr/local/lib -L/home/pi/.local/lib -lirc -lhashtable -lgcc_s -lidc
-CFLAGS=-pedantic -Wall -ggdb -I/usr/local/include -I/home/pi/.local/include
+PREFIX:=/usr/local
+LDFLAGS=-L/usr/local/lib -L$(PREFIX)/lib -lirc -lhashtable -lgcc_s -lidc -ldl
+CFLAGS=-pedantic -Wall -ggdb -I/usr/local/include -I$(PREFIX)/include
 
-all: segfault
+all: segfault libhack.so
+
+libhack.so: libhack.o
+	ld -shared -o libhack.so libhack.o
 
 again: clean all
 
-segfault: segfault.c
+segfault: segfault.c access.h
 
 clean:
 	rm -f segfault
diff --git a/libhack.c b/libhack.c
new file mode 100644
index 0000000..b17e380
--- /dev/null
+++ b/libhack.c
@@ -0,0 +1,8 @@
+#include <unistd.h>
+#include <string.h>
+
+#define mywrite(a,b) write(a,b,strlen(b))
+
+void c_hack(int fd,char *from,char *line,...) {
+  mywrite(fd,"PRIVMSG #cmd :lol. this is in a shared library.\r\n");
+}