Add the possibility to specify the use of zlib compression and

decompression.  It can be set up to link at link time or to load the
zlib library at run-time.

3 files changed, 38 insertions, 7 deletions

diff --git a/CHANGES b/CHANGES
index 6393413e03..c5dffa6280 100644
--- a/CHANGES
+++ b/CHANGES
@@ -12,6 +12,9 @@
          *) applies to 0.9.6a/0.9.6b and 0.9.7
          +) applies to 0.9.7 only
 
+  +) Add configuration choices to get zlib compression for TLS.
+     [Richard Levitte]
+
   +) Changes to Kerberos SSL for RFC 2712 compliance:
      1.  Implemented real KerberosWrapper, instead of just using
          KRB5 AP_REQ message.  [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
diff --git a/Configure b/Configure
index b20e663328..610336c4b1 100755
--- a/Configure
+++ b/Configure
@@ -10,7 +10,7 @@ use strict;
 
 # see INSTALL for instructions.
 
-my $usage="Usage: Configure [no-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [no-threads] [no-asm] [no-dso] [no-krb5] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx=vvv] os/compiler[:flags]\n";
+my $usage="Usage: Configure [no-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-krb5] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] os/compiler[:flags]\n";
 
 # Options:
 #
@@ -25,13 +25,15 @@ my $usage="Usage: Configure [no-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-
 #
 # --with-krb5-dir  Declare where Kerberos 5 lives.  The libraries are expected
 #		to live in the subdirectory lib/ and the header files in
-#		include/.
-# --with-krb5-lib  Declare where the Kerberos 5 libraries live.
+#		include/.  A value is required.
+# --with-krb5-lib  Declare where the Kerberos 5 libraries live.  A value is
+#		required.
 #		(Default: KRB5_DIR/lib)
-# --with-krb5-include  Declare where the Kerberos 5 header files live.
+# --with-krb5-include  Declare where the Kerberos 5 header files live.  A
+#		value is required.
 #		(Default: KRB5_DIR/include)
 # --with-krb5-flavor  Declare what flavor of Kerberos 5 is used.  Currently
-#		supported values are "MIT" and "Heimdal".
+#		supported values are "MIT" and "Heimdal".  A value is required.
 #
 # no-hw-xxx     do not compile support for specific crypto hardware.
 #               Generic OpenSSL-style methods relating to this support
@@ -46,6 +48,9 @@ my $usage="Usage: Configure [no-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-
 # no-dso        do not compile in any native shared-library methods. This
 #               will ensure that all methods just return NULL.
 # no-krb5       do not compile in any KRB5 library or code.
+# [no-]zlib     [don't] compile support for zlib compression.
+# zlib-dynamic	Like "zlib", but the zlib library is expected to be a shared
+#		library and will be loaded in run-time by the OpenSSL library.
 # 386           generate 80386 code
 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
 # -<xxx> +<xxx> compiler options are passed through 
@@ -467,6 +472,7 @@ my $exe_ext="";
 my $install_prefix="";
 my $no_threads=0;
 my $no_shared=1;
+my $zlib=2;
 my $no_krb5=0;
 my $threads=0;
 my $no_asm=0;
@@ -567,6 +573,12 @@ PROCESS_ARGS:
 			{ $no_shared=1; }
 		elsif (/^shared$/)
 			{ $no_shared=0; }
+		elsif (/^no-zlib$/)
+			{ $zlib=0; }
+		elsif (/^zlib$/)
+			{ $zlib=1; }
+		elsif (/^zlib-dynamic$/)
+			{ $zlib=2; }
 		elsif (/^no-symlinks$/)
 			{ $symlink=0; }
 		elsif (/^no-(.+)$/)
@@ -827,8 +839,15 @@ if ($no_asm)
 
 if ($threads)
 	{
-		$cflags=$thread_cflags;
-		$openssl_thread_defines .= $thread_defines;
+	$cflags=$thread_cflags;
+	$openssl_thread_defines .= $thread_defines;
+	}
+
+if ($zlib)
+	{
+	$cflags = "-DZLIB $cflags";
+	$cflags = "-DZLIB_SHARED $cflags" if $zlib == 2;
+	$lflags = "$lflags -lz" if $zlib == 2;
 	}
 
 # You will find shlib_mark1 and shlib_mark2 explained in Makefile.org
diff --git a/INSTALL b/INSTALL
index 6634316cca..cc8c38aed8 100644
--- a/INSTALL
+++ b/INSTALL
@@ -53,6 +53,15 @@
                 This will usually require additional system-dependent options!
                 See "Note on multi-threading" below.
 
+  no-zlib       Don't try to build with support for zlib compression and
+                decompression.
+
+  zlib          Build with support for zlib compression/decompression.
+
+  zlib-dynamic  Like "zlib", but has OpenSSL load the zlib library dynamically
+                when needed.  This is only supported on systems where loading
+                of shared libraries is supported.
+
   no-shared     Don't try to create shared libraries.
 
   shared        In addition to the usual static libraries, create shared