thodg/libgit2

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6db1826..a8e646d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,13 +21,30 @@ STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_V
 STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
 SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
 
+IF (AMIGA)
+	# Default AmigaOS to use the PowerPC SHA1
+	SET(SHA1_TYPE "ppc")
+ENDIF()
+
 # Find required dependencies
 INCLUDE_DIRECTORIES(src include deps/http-parser)
 
 FILE(GLOB SRC_HTTP deps/http-parser/*.c)
 
+# Specify sha1 implementation
+IF (SHA1_TYPE STREQUAL "ppc")
+	ADD_DEFINITIONS(-DPPC_SHA1)
+	FILE(GLOB SRC_SHA1 src/ppc/*.c src/ppc/*.S)
+ELSE ()
+	SET (SRC_SHA1)
+ENDIF()
+
 IF (NOT WIN32)
 	FIND_PACKAGE(ZLIB)
+	IF (CMAKE_SYSTEM_NAME STREQUAL "AmigaOS")
+		INCLUDE_DIRECTORIES(deps/regex)
+		SET(SRC_REGEX deps/regex/regex.c)
+	ENDIF()
 ELSE()
 	# Windows doesn't understand POSIX regex on its own
 	INCLUDE_DIRECTORIES(deps/regex)
@@ -115,12 +132,15 @@ IF (WIN32 AND NOT CYGWIN)
 	FILE(GLOB SRC src/*.c src/transports/*.c src/xdiff/*.c src/win32/*.c src/compat/*.c)
 ELSEIF (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
 	FILE(GLOB SRC src/*.c src/transports/*.c src/xdiff/*.c src/unix/*.c src/compat/*.c)
+ELSEIF (AMIGA)
+	ADD_DEFINITIONS(-DNO_ADDRINFO -DNO_READDIR_R)
+	FILE(GLOB SRC src/*.c src/transports/*.c src/xdiff/*.c src/amiga/*.c src/compat/*.c)
 ELSE()
 	FILE(GLOB SRC src/*.c src/transports/*.c src/xdiff/*.c src/unix/*.c)
 ENDIF ()
 
 # Compile and link libgit2
-ADD_LIBRARY(git2 ${SRC} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${WIN_RC})
+ADD_LIBRARY(git2 ${SRC} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1} ${WIN_RC})
 
 IF (WIN32)
 	TARGET_LINK_LIBRARIES(git2 ws2_32)
diff --git a/examples/network/Makefile b/examples/network/Makefile
index c21869a..298b1dc 100644
--- a/examples/network/Makefile
+++ b/examples/network/Makefile
@@ -2,7 +2,7 @@ default: all
 
 CC = gcc
 CFLAGS += -g
-CFLAGS += -I../../include -L../../ -lgit2 -lpthread
+CFLAGS += -I../../include -L../../build -lgit2 -lpthread
 
 OBJECTS = \
   git2.o \
diff --git a/examples/network/fetch.c b/examples/network/fetch.c
index 8dcb81b..d275212 100644
--- a/examples/network/fetch.c
+++ b/examples/network/fetch.c
@@ -91,6 +91,7 @@ int fetch(git_repository *repo, int argc, char **argv)
 		usleep(10000);
 		printf("\rReceived %d/%d objects in %d bytes", stats.processed, stats.total, bytes);
 	} while (!data.finished);
+
 	printf("\rReceived %d/%d objects in %d bytes\n", stats.processed, stats.total, bytes);
 
 	// Disconnect the underlying connection to prevent from idling.
diff --git a/include/git2/common.h b/include/git2/common.h
index 0e93798..1af045c 100644
--- a/include/git2/common.h
+++ b/include/git2/common.h
@@ -55,6 +55,10 @@
 #define GIT_WIN32 1
 #endif
 
+#ifdef __amigaos4__
+#include <netinet/in.h>
+#endif
+
 /**
  * @file git2/common.h
  * @brief Git common platform definitions
diff --git a/include/git2/errors.h b/include/git2/errors.h
index ccbc9fc..b4809fe 100644
--- a/include/git2/errors.h
+++ b/include/git2/errors.h
@@ -20,6 +20,7 @@ GIT_BEGIN_DECL
 #ifdef GIT_OLD_ERRORS
 enum {
 	GIT_SUCCESS = 0,
+	GIT_ERROR = -1,
 	GIT_ENOTOID = -2,
 	GIT_ENOTFOUND = -3,
 	GIT_ENOMEM = -4,
@@ -52,7 +53,7 @@ enum {
 	GIT_ENOMATCH = -31,
 	GIT_ESHORTBUFFER = -32,
 };
-#endif
+#else
 
 /** Generic return codes */
 enum {
@@ -66,6 +67,7 @@ enum {
 	GIT_PASSTHROUGH = -30,
 	GIT_REVWALKOVER = -31,
 };
+#endif
 
 typedef struct {
 	char *message;
diff --git a/include/git2/types.h b/include/git2/types.h
index b4b48af..6919030 100644
--- a/include/git2/types.h
+++ b/include/git2/types.h
@@ -32,6 +32,9 @@ GIT_BEGIN_DECL
  * stat() functions, for all platforms.
  */
 #include <sys/types.h>
+#ifdef __amigaos4__
+#include <stdint.h>
+#endif
 
 #if defined(_MSC_VER)
 
diff --git a/src/amiga/map.c b/src/amiga/map.c
new file mode 100755
index 0000000..2fb065c
--- /dev/null
+++ b/src/amiga/map.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2009-2012 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#include <git2/common.h>
+
+#ifndef GIT_WIN32
+
+#include "posix.h"
+#include "map.h"
+#include <errno.h>
+
+int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset)
+{
+	GIT_MMAP_VALIDATE(out, len, prot, flags);
+
+	out->data = NULL;
+	out->len = 0;
+
+	if ((prot & GIT_PROT_WRITE) && ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED)) {
+		giterr_set(GITERR_OS, "Trying to map shared-writeable");
+		return -1;
+	}
+
+	if((out->data = malloc(len))) {
+		p_lseek(fd, offset, SEEK_SET);
+		p_read(fd, out->data, len);
+	}
+
+	if (!out->data || (out->data == MAP_FAILED)) {
+		giterr_set(GITERR_OS, "Failed to mmap. Could not write data");
+		return -1;
+	}
+
+	out->len = len;
+
+	return 0;
+}
+
+int p_munmap(git_map *map)
+{
+	assert(map != NULL);
+	free(map->data);
+
+	return 0;
+}
+
+#endif
+
diff --git a/src/indexer.c b/src/indexer.c
index 5ae66c9..565d9ea 100644
--- a/src/indexer.c
+++ b/src/indexer.c
@@ -365,11 +365,11 @@ int git_indexer_stream_add(git_indexer_stream *idx, const void *data, size_t siz
 		if (error < 0) {
 			idx->off = entry_start;
 			error = store_delta(idx);
+
 			if (error == GIT_EBUFS)
 				return 0;
 			if (error < 0)
 				return error;
-
 			continue;
 		}
 
diff --git a/src/map.h b/src/map.h
index 96d8795..6ce6d36 100644
--- a/src/map.h
+++ b/src/map.h
@@ -23,6 +23,10 @@
 #define GIT_MAP_TYPE	0xf
 #define GIT_MAP_FIXED	0x10
 
+#ifdef __amigaos4__
+#define MAP_FAILED 0
+#endif
+
 typedef struct { /* memory mapped buffer	*/
 	void *data; /* data bytes			*/
 	size_t len; /* data length			*/
diff --git a/src/mwindow.c b/src/mwindow.c
index 57adabd..74fbf78 100644
--- a/src/mwindow.c
+++ b/src/mwindow.c
@@ -158,6 +158,7 @@ static git_mwindow *new_window(
 	git_mwindow *w;
 
 	w = git__malloc(sizeof(*w));
+	
 	if (w == NULL)
 		return NULL;
 
diff --git a/src/netops.c b/src/netops.c
index 3255474..0342d7f 100644
--- a/src/netops.c
+++ b/src/netops.c
@@ -32,6 +32,99 @@
 #include "buffer.h"
 #include "transport.h"
 
+#ifdef NO_ADDRINFO
+struct addrinfo {
+	struct hostent *ai_hostent;
+	struct servent *ai_servent;
+	struct sockaddr_in ai_addr_in;
+	struct sockaddr *ai_addr;
+	size_t ai_addrlen;
+	int ai_family;
+	int ai_socktype;
+	int ai_protocol;
+	long ai_port;
+	struct addrinfo *ai_next;
+};
+
+static int getaddrinfo(const char *host, const char *port, struct addrinfo *hints, struct addrinfo **info) {
+	GIT_UNUSED(hints);
+	
+	struct addrinfo *ainfo, *ai;
+	int p = 0;
+	
+	if((ainfo = malloc(sizeof(struct addrinfo))) == NULL)
+		return -1;
+		
+	if((ainfo->ai_hostent = gethostbyname(host)) == NULL)
+		return -2;
+		
+	ainfo->ai_servent = getservbyname(port, 0);
+	
+	if(ainfo->ai_servent)
+		ainfo->ai_port = ainfo->ai_servent->s_port;
+	else
+		ainfo->ai_port = atol(port);
+
+
+	memcpy(&ainfo->ai_addr_in.sin_addr, ainfo->ai_hostent->h_addr_list[0], ainfo->ai_hostent->h_length);
+	ainfo->ai_protocol = 0;
+	ainfo->ai_socktype = hints->ai_socktype;
+	ainfo->ai_family = ainfo->ai_hostent->h_addrtype;
+	ainfo->ai_addr_in.sin_family = ainfo->ai_family;
+	ainfo->ai_addr_in.sin_port = ainfo->ai_port;
+	ainfo->ai_addr = (struct addrinfo *)&ainfo->ai_addr_in;
+	ainfo->ai_addrlen = sizeof(struct sockaddr_in);
+
+	*info = ainfo;
+	
+	if(ainfo->ai_hostent->h_addr_list[1] == NULL) {
+		ainfo->ai_next = NULL;
+		return 0;
+	}
+	
+	ai = ainfo;
+	
+	for (p = 1; ainfo->ai_hostent->h_addr_list[p] != NULL; p++) {
+		ai->ai_next = malloc(sizeof(struct addrinfo));
+		memcpy(&ai->ai_next, ainfo, sizeof(struct addrinfo));
+		memcpy(&ai->ai_next->ai_addr_in.sin_addr, ainfo->ai_hostent->h_addr_list[p], ainfo->ai_hostent->h_length);
+		ai->ai_next->ai_addr = (struct addrinfo *)&ai->ai_next->ai_addr_in;
+		ai = ai->ai_next;
+	}
+	
+	ai->ai_next = NULL;
+	return 0;
+}
+
+static void freeaddrinfo(struct addrinfo *info) {
+	struct addrinfo *p, *next;
+	
+	p = info;
+	
+	while(p != NULL) {
+		next = p->ai_next;
+		free(p);
+		p = next;
+	}
+}
+
+static const char *gai_strerror(int ret) {
+	switch(ret) {
+		case -1:
+			return "Out of memory";
+		break;
+		
+		case -2:
+			return "Address lookup failed";
+		break;
+		
+		default:
+			return "Unknown error";
+		break;
+	}
+}
+#endif
+
 #ifdef GIT_WIN32
 static void net_set_error(const char *str)
 {
@@ -381,8 +474,8 @@ int gitno_connect(git_transport *t, const char *host, const char *port)
 	GIT_SOCKET s = INVALID_SOCKET;
 
 	memset(&hints, 0x0, sizeof(struct addrinfo));
-	hints.ai_family = AF_UNSPEC;
 	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_family = AF_UNSPEC;
 
 	if ((ret = getaddrinfo(host, port, &hints, &info)) < 0) {
 		giterr_set(GITERR_NET, "Failed to resolve address for %s: %s", host, gai_strerror(ret));
@@ -391,6 +484,7 @@ int gitno_connect(git_transport *t, const char *host, const char *port)
 
 	for (p = info; p != NULL; p = p->ai_next) {
 		s = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
+
 		if (s == INVALID_SOCKET) {
 			net_set_error("error creating socket");
 			break;
diff --git a/src/pack.c b/src/pack.c
index 0db1069..9b5e0e1 100644
--- a/src/pack.c
+++ b/src/pack.c
@@ -262,7 +262,7 @@ int git_packfile_unpack_header(
 	if (base == NULL)
 		return GIT_EBUFS;
 
-	ret = packfile_unpack_header1(&used, size_p, type_p, base, left);
+		ret = packfile_unpack_header1(&used, size_p, type_p, base, left);
 	git_mwindow_close(w_curs);
 	if (ret == GIT_EBUFS)
 		return ret;
diff --git a/src/pool.c b/src/pool.c
index 641292d..63bf09c 100644
--- a/src/pool.c
+++ b/src/pool.c
@@ -275,6 +275,8 @@ uint32_t git_pool__system_page_size(void)
 		SYSTEM_INFO info;
 		GetSystemInfo(&info);
 		size = (uint32_t)info.dwPageSize;
+#elif defined(__amigaos4__)
+		size = (uint32_t)4096; /* 4K as there is no global value we can query */
 #else
 		size = (uint32_t)sysconf(_SC_PAGE_SIZE);
 #endif
diff --git a/src/posix.h b/src/posix.h
index 5799c04..d423b7e 100644
--- a/src/posix.h
+++ b/src/posix.h
@@ -83,6 +83,16 @@ extern int p_gettimeofday(struct timeval *tv, struct timezone *tz);
 #	include "unix/posix.h"
 #endif
 
+#ifndef NO_READDIR_R
 #define p_readdir_r(d,e,r) readdir_r(d,e,r)
+#else
+#include <dirent.h>
+GIT_INLINE(int) p_readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
+{
+	GIT_UNUSED(entry);
+	*result = readdir(dirp);
+	return 0;
+}
+#endif
 
 #endif
diff --git a/src/unix/map.c b/src/unix/map.c
index 772f4e2..9dcae58 100644
--- a/src/unix/map.c
+++ b/src/unix/map.c
@@ -33,6 +33,7 @@ int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offs
 		mflag = MAP_PRIVATE;
 
 	out->data = mmap(NULL, len, mprot, mflag, fd, offset);
+
 	if (!out->data || out->data == MAP_FAILED) {
 		giterr_set(GITERR_OS, "Failed to mmap. Could not write data");
 		return -1;
@@ -47,6 +48,7 @@ int p_munmap(git_map *map)
 {
 	assert(map != NULL);
 	munmap(map->data, map->len);
+
 	return 0;
 }
 
diff --git a/src/unix/posix.h b/src/unix/posix.h
index 48b4929..83fd8a1 100644
--- a/src/unix/posix.h
+++ b/src/unix/posix.h
@@ -7,7 +7,7 @@
 #ifndef INCLUDE_posix__w32_h__
 #define INCLUDE_posix__w32_h__
 
-#ifndef __sun
+#if !defined(__sun) && !defined(__amigaos4__)
 #	include <fnmatch.h>
 #	define p_fnmatch(p, s, f) fnmatch(p, s, f)
 #else