Add support for compiling on AIX

Closes #1900

src/Makefile

@@ -62,13 +62,19 @@ ifeq ($(uname_S),SunOS)
 else
 ifeq ($(uname_S),Darwin)
 	# Darwin (nothing to do)
+else
+ifeq ($(uname_S),AIX)
+        # AIX
+        FINAL_LDFLAGS+= -Wl,-bexpall
+        FINAL_LIBS+= -pthread -lcrypt -lbsd
+
 else
 	# All the other OSes (notably Linux)
 	FINAL_LDFLAGS+= -rdynamic
 	FINAL_LIBS+= -pthread
 endif
 endif
-
+endif
 # Include paths to dependencies
 FINAL_CFLAGS+= -I../deps/hiredis -I../deps/linenoise -I../deps/lua/src
 

src/anet.h

@@ -39,10 +39,14 @@
 #define ANET_NONE 0
 #define ANET_IP_ONLY (1<<0)
 
-#if defined(__sun)
+#if defined(__sun) || defined(_AIX)
 #define AF_LOCAL AF_UNIX
 #endif
 
+#ifdef _AIX
+#undef ip_len
+#endif
+
 int anetTcpConnect(char *err, char *addr, int port);
 int anetTcpNonBlockConnect(char *err, char *addr, int port);
 int anetTcpNonBlockBindConnect(char *err, char *addr, int port, char *source_addr);

src/fmacros.h

@@ -36,6 +36,10 @@
 #define _GNU_SOURCE
 #endif
 
+#if defined(_AIX)
+#define _ALL_SOURCE
+#endif
+
 #if defined(__linux__) || defined(__OpenBSD__)
 #define _XOPEN_SOURCE 700
 /*

src/redis.h

@@ -626,6 +626,11 @@ typedef struct redisOpArray {
 
 struct clusterState;
 
+#ifdef _AIX
+#undef hz
+#endif
+
+
 struct redisServer {
     /* General */
     pid_t pid;                  /* Main process pid. */