diff options
| author | Fabian Groffen <grobian@gentoo.org> | 2019-11-11 08:34:49 +0100 |
|---|---|---|
| committer | Kevin McCarthy <kevin@8t8.us> | 2019-11-30 13:59:51 -0800 |
| commit | 136ae0add512f21bc418f9e31a2f1b970ad1a490 (patch) | |
| tree | 82797901e6688047b77fb05a6d4865db2e260cbb /configure.ac | |
| parent | 1dd65e6beb0f1d211d63f936d92aecc792d2f72b (diff) | |
imap: add support for COMPRESS=DEFLATE, RFC 4978
- added mutt_zstrm which allows wrapping an existing connection with
deflate/inflate (zlib compression)
- call mutt_zstrm_wrap_conn when setting up an IMAP connection if the
server supports COMPRESSION=DEFLATE and imap_deflate evaluates to yes
- add config quad-option imap_deflate enable/disable use of
(de)compression for IMAP connections, defaulting to yes
- add configure check for zlib, --with-zlib to detect if mutt_zstrm can
(or should) be built
Tested against a Dovecot IMAP server, observed easily 7x compression
rates on received data, and 5x on sent data for a normal session. Rates
can be observed when the connection is closed on debug level 4 and
higher.
Bug: https://gitlab.com/muttmua/mutt/issues/92
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 8c1c27ee..4e9cf2b2 100644 --- a/configure.ac +++ b/configure.ac @@ -756,6 +756,44 @@ then fi AM_CONDITIONAL(USE_GSS, test x$need_gss = xyes) +# if zlib +AC_ARG_WITH(zlib, AS_HELP_STRING([--with-zlib@<:@=PFX@:>@],[Enable DEFLATE support for IMAP using libz]), + zlib_prefix="$withval", zlib_prefix="auto") +if test "$zlib_prefix" != "no" +then + if test "$need_imap" = "yes" + then + have_zlib= + saved_LDFLAGS="$LDFLAGS" + saved_CPPFLAGS="$CPPFLAGS" + if test "$zlib_prefix" != "yes" + then + LDFLAGS="$LDFLAGS -L$zlib_prefix/lib" + CPPFLAGS="$CPPFLAGS -I$zlib_prefix/include" + fi + AC_CHECK_HEADERS([zlib.h], [AC_CHECK_LIB([z], [deflate], + [have_zlib=yes])]) + if test "x$have_zlib" = "x" + then + if test "x$zlib_prefix" != "xauto" + then + AC_MSG_ERROR([ZLIB requested, but library or headers not found]) + fi + zlib_prefix=no + else + MUTTLIBS="$MUTTLIBS -lz" + AC_DEFINE(USE_ZLIB, 1, [Define if you have libz available]) + MUTT_LIB_OBJECTS="$MUTT_LIB_OBJECTS mutt_zstrm.o" + zlib_prefix=yes + fi + LDFLAGS="$saved_LDFLAGS" + CPPFLAGS="$saved_CPPFLAGS" + else + AC_MSG_WARN([ZLIB was requested but IMAP is not enabled]) + fi +fi +AM_CONDITIONAL(USE_ZLIB, test x$zlib_prefix = xyes) + dnl -- end imap dependencies -- AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl@<:@=PFX@:>@],[Enable TLS support using OpenSSL]), |