Added compll to the compilation environment and allow linking to zlib

.gitmodules

+[submodule "compll"]
+	path = compll
+	url = git://g.blicky.net/compll.git/

compll @ f089f642

+Subproject commit f089f64220c1a41532853c5e4ee17daa8f40b2ff

configure.in

@@ -18,6 +18,8 @@ AC_CHECK_HEADERS(
 AC_TYPE_OFF_T
 AC_SYS_LARGEFILE
 AC_STRUCT_ST_BLOCKS
+AC_CHECK_TYPE([unsigned long long], [],
+              [AC_MSG_ERROR([your compiler does not have an unsigned long long type.])])
 
 # Check for library functions.
 AC_CHECK_FUNCS(
@@ -47,6 +49,28 @@ AC_CHECK_LIB([$ncurses],
 
 
 
+# compll configuration (only zlib is supported currently)
+compll=no
+AC_ARG_WITH([compll],
+            AC_HELP_STRING([--with-compll=zlib], [use zlib for in-memory compression (experimental)]),
+            [compll=$withval])
+if test "x$compll" != "xno"; then
+  AC_CHECK_LIB([z],
+               [zlibVersion],
+               [AC_CHECK_HEADER([zlib.h], [LIBS="$LIBS -lz"; compll=zlib],
+                                [if test "x$compll" = "xauto"; then compll=no
+                                 else AC_MSG_ERROR([--with-compll is given, but zlib.h could not be found]); fi])
+               ],
+               [if test "x$compll" = "xauto"; then compll=no
+                else AC_MSG_ERROR([--with-compll is given, but no zlib library could not be found]); fi])
+fi
+if test "x$compll" = "xno"; then
+  AC_DEFINE([COMPLL_NOLIB], [1], [don't use compll])
+fi
+AM_CONDITIONAL([COMPLL], [test "x$compll" != "xno"])
+
+
+
 AC_OUTPUT([Makefile src/Makefile doc/Makefile])
 
 echo ""

src/Makefile.am

 bin_PROGRAMS = ncdu
 
 ncdu_SOURCES = browser.c calc.c delete.c dirlist.c exclude.c help.c main.c path.c util.c
+if COMPLL
+ncdu_SOURCES += compll.c
+endif
 
-noinst_HEADERS = browser.h calc.h delete.h dirlist.h exclude.h global.h help.h path.h util.h
+noinst_HEADERS = browser.h compll.h calc.h delete.h dirlist.h exclude.h global.h help.h path.h util.h

src/compll.c

+../compll/compll.c
\ No newline at end of file

src/compll.h

+../compll/compll.h
\ No newline at end of file