7zip support, written by Dennis Schridde, and heavily Ryanified by me.

CHANGELOG

@@ -2,6 +2,7 @@
  * CHANGELOG.
  */
 
+04112006 - Added LZMA archiver...7zip support (thanks, Dennis!).
 03232006 - Added -fvisibility for gcc4 (http://gcc.gnu.org/wiki/Visibility)
 01012006 - Cleaned up overflow checks in platform memory allocators (thanks to
            Nicolas Lebedenco for pointing out the original issue with

Makefile.am.newautomake

@@ -105,7 +105,7 @@ EXTRA_DIST =	\
 
 else
 
-SUBDIRS = platform archivers zlib123 . test extras
+SUBDIRS = platform archivers zlib123 lzma . test extras
 
 libphysfs_la_SOURCES =	\
 	physfs.c	\
@@ -118,13 +118,20 @@ else
 ZLIB_LIB =
 endif
 
+if BUILD_LZMA
+LZMA_LIB = lzma/liblzma.la
+else
+LZMA_LIB =
+endif
+
 libphysfs_la_LDFLAGS = 		\
 	-release $(LT_RELEASE)	\
 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 libphysfs_la_LIBADD =	\
 	archivers/libarchivers.la	\
 	platform/libplatform.la	\
-	$(ZLIB_LIB)
+	$(ZLIB_LIB) \
+	$(LZMA_LIB)
 
 EXTRA_DIST =	\
 	CREDITS \

archivers/Makefile.am

@@ -1,9 +1,13 @@
 noinst_LTLIBRARIES = libarchivers.la
 
-if BUILD_ZLIB
-INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/zlib123
-else
 INCLUDES = -I$(top_srcdir)
+
+if BUILD_ZLIB
+INCLUDES += -I$(top_srcdir)/zlib123
+endif
+
+if BUILD_LZMA
+INCLUDES += -I$(top_srcdir)/lzma
 endif
 
 libarchivers_la_SOURCES =	\
@@ -13,5 +17,6 @@ libarchivers_la_SOURCES =	\
 	hog.c		\
 	mvl.c		\
 	zip.c		\
+	lzma.c		\
 	qpak.c		\
 	mix.c