Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

14 files changed, 429 insertions, 0 deletions

diff --git a/external/curl/ExternalPackage_curl.mk b/external/curl/ExternalPackage_curl.mk
new file mode 100644
index 000000000..ee0cf4501
--- /dev/null
+++ b/external/curl/ExternalPackage_curl.mk
@@ -0,0 +1,28 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalPackage_ExternalPackage,curl,curl))
+
+$(eval $(call gb_ExternalPackage_use_external_project,curl,curl))
+
+ifneq ($(DISABLE_DYNLOADING),TRUE)
+
+ifeq ($(COM),MSC)
+$(eval $(call gb_ExternalPackage_add_file,curl,$(LIBO_LIB_FOLDER)/libcurl$(if $(MSVC_USE_DEBUG_RUNTIME),_debug).dll,builds/libcurl-vc12-$(gb_MSBUILD_PLATFORM)-$(gb_MSBUILD_CONFIG)-dll-zlib-static-ipv6-sspi-schannel/bin/libcurl$(if $(MSVC_USE_DEBUG_RUNTIME),_debug).dll))
+else ifeq ($(OS),MACOSX)
+$(eval $(call gb_ExternalPackage_add_file,curl,$(LIBO_LIB_FOLDER)/libcurl.4.dylib,lib/.libs/libcurl.4.dylib))
+else ifeq ($(OS),AIX)
+$(eval $(call gb_ExternalPackage_add_file,curl,$(LIBO_LIB_FOLDER)/libcurl.so,lib/.libs/libcurl.so.4))
+else
+$(eval $(call gb_ExternalPackage_add_file,curl,$(LIBO_LIB_FOLDER)/libcurl.so.4,lib/.libs/libcurl.so.4.8.0))
+endif
+
+endif # $(DISABLE_DYNLOADING)
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/curl/ExternalProject_curl.mk b/external/curl/ExternalProject_curl.mk
new file mode 100644
index 000000000..8d8bd13ae
--- /dev/null
+++ b/external/curl/ExternalProject_curl.mk
@@ -0,0 +1,99 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalProject_ExternalProject,curl))
+
+$(eval $(call gb_ExternalProject_use_externals,curl,\
+	$(if $(ENABLE_NSS),nss3) \
+	zlib \
+))
+
+$(eval $(call gb_ExternalProject_register_targets,curl,\
+	build \
+))
+
+ifneq ($(OS),WNT)
+
+curl_CPPFLAGS :=
+curl_LDFLAGS := $(if $(filter LINUX FREEBSD,$(OS)),-Wl$(COMMA)-z$(COMMA)origin -Wl$(COMMA)-rpath$(COMMA)\$$$$ORIGIN)
+
+ifneq ($(OS),ANDROID)
+ifneq ($(SYSBASE),)
+curl_CPPFLAGS += -I$(SYSBASE)/usr/include
+curl_LDFLAGS += -L$(SYSBASE)/usr/lib
+endif
+endif
+
+# there are 2 include paths, the other one is passed to --with-nss below
+ifeq ($(SYSTEM_NSS),)
+curl_CPPFLAGS += -I$(call gb_UnpackedTarball_get_dir,nss)/dist/public/nss
+endif
+
+# use --with-secure-transport on macOS >10.5 and iOS to get a native UI for SSL certs for CMIS usage
+# use --with-nss only on platforms other than macOS and iOS
+$(call gb_ExternalProject_get_state_target,curl,build):
+	$(call gb_Trace_StartRange,curl,EXTERNAL)
+	$(call gb_ExternalProject_run,build,\
+		$(gb_RUN_CONFIGURE) ./configure \
+			$(if $(filter iOS MACOSX,$(OS)),\
+				--with-secure-transport,\
+				$(if $(ENABLE_NSS),--with-nss$(if $(SYSTEM_NSS),,="$(call gb_UnpackedTarball_get_dir,nss)/dist/out") --with-nss-deprecated,--without-nss)) \
+			--without-openssl --without-gnutls --without-polarssl --without-cyassl --without-axtls --without-mbedtls \
+			--enable-ftp --enable-http --enable-ipv6 \
+			--without-libidn2 --without-libpsl --without-librtmp \
+			--without-libssh2 --without-metalink --without-nghttp2 \
+			--without-libssh --without-brotli \
+			--without-ngtcp2 --without-quiche \
+			--without-zstd --without-hyper --without-gsasl --without-gssapi \
+			--disable-mqtt --disable-ares \
+			--disable-dict --disable-file --disable-gopher --disable-imap \
+			--disable-ldap --disable-ldaps --disable-manual --disable-pop3 \
+			--disable-rtsp --disable-smb --disable-smtp --disable-telnet  \
+			--disable-tftp  \
+			$(if $(filter LINUX,$(OS)),--without-ca-bundle --without-ca-path) \
+			$(gb_CONFIGURE_PLATFORMS) \
+			$(if $(filter TRUE,$(DISABLE_DYNLOADING)),--disable-shared,--disable-static) \
+			$(if $(ENABLE_DEBUG),--enable-debug) \
+			$(if $(verbose),--disable-silent-rules,--enable-silent-rules) \
+			$(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO) \
+			$(if $(filter MACOSX,$(OS)),CFLAGS='$(CFLAGS) \
+				-mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)') \
+			CPPFLAGS='$(curl_CPPFLAGS)' \
+			CFLAGS="$(gb_CFLAGS) $(call gb_ExternalProject_get_build_flags,curl)" \
+			LDFLAGS='$(call gb_ExternalProject_get_link_flags,curl) $(curl_LDFLAGS)' \
+			ZLIB_CFLAGS='$(ZLIB_CFLAGS)' ZLIB_LIBS='$(ZLIB_LIBS)' \
+		&& cd lib \
+		&& $(MAKE) \
+	)
+	$(call gb_Trace_EndRange,curl,EXTERNAL)
+
+else ifeq ($(COM),MSC)
+
+$(eval $(call gb_ExternalProject_use_nmake,curl,build))
+
+$(call gb_ExternalProject_get_state_target,curl,build):
+	$(call gb_Trace_StartRange,curl,EXTERNAL)
+	$(call gb_ExternalProject_run,build,\
+		nmake -f Makefile.vc \
+			mode=dll \
+			VC=12 \
+			MACHINE=$(gb_MSBUILD_PLATFORM) \
+			GEN_PDB=$(if $(call gb_Module__symbols_enabled,curl),yes,no) \
+			$(if $(call gb_Module__symbols_enabled,curl),CFLAGS_PDB_VALUE="$(gb_DEBUGINFO_FLAGS)") \
+			DEBUG=$(if $(MSVC_USE_DEBUG_RUNTIME),yes,no) \
+			ENABLE_IPV6=yes \
+			ENABLE_SSPI=yes \
+			ENABLE_WINSSL=yes \
+			WITH_ZLIB=static \
+	,winbuild)
+	$(call gb_Trace_EndRange,curl,EXTERNAL)
+
+endif
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/curl/Makefile b/external/curl/Makefile
new file mode 100644
index 000000000..e4968cf85
--- /dev/null
+++ b/external/curl/Makefile
@@ -0,0 +1,7 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+
+module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
+
+include $(module_directory)/../../solenv/gbuild/partial_build.mk
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/curl/Module_curl.mk b/external/curl/Module_curl.mk
new file mode 100644
index 000000000..2b4c61c04
--- /dev/null
+++ b/external/curl/Module_curl.mk
@@ -0,0 +1,18 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Module_Module,curl))
+
+$(eval $(call gb_Module_add_targets,curl,\
+	UnpackedTarball_curl \
+	ExternalPackage_curl \
+	ExternalProject_curl \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/curl/README b/external/curl/README
new file mode 100644
index 000000000..292e4edf5
--- /dev/null
+++ b/external/curl/README
@@ -0,0 +1 @@
+A URL manipulation engine from [http://curl.haxx.se/].
diff --git a/external/curl/UnpackedTarball_curl.mk b/external/curl/UnpackedTarball_curl.mk
new file mode 100644
index 000000000..e78adabb8
--- /dev/null
+++ b/external/curl/UnpackedTarball_curl.mk
@@ -0,0 +1,48 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_UnpackedTarball_UnpackedTarball,curl))
+
+$(eval $(call gb_UnpackedTarball_set_tarball,curl,$(CURL_TARBALL),,curl))
+
+$(eval $(call gb_UnpackedTarball_update_autoconf_configs,curl))
+
+$(eval $(call gb_UnpackedTarball_set_patchlevel,curl,1))
+
+$(eval $(call gb_UnpackedTarball_fix_end_of_line,curl,\
+	winbuild/MakefileBuild.vc \
+))
+
+$(eval $(call gb_UnpackedTarball_add_patches,curl,\
+	external/curl/curl-msvc.patch.1 \
+	external/curl/curl-msvc-zlib.patch.1 \
+	external/curl/curl-msvc-disable-protocols.patch.1 \
+	external/curl/zlib.patch.0 \
+	external/curl/configurable-z-option.patch.0 \
+))
+
+ifeq ($(SYSTEM_NSS),)
+$(eval $(call gb_UnpackedTarball_add_patches,curl,\
+	external/curl/curl-nss.patch.1 \
+))
+endif
+
+ifeq ($(OS)-$(COM_IS_CLANG),WNT-TRUE)
+$(eval $(call gb_UnpackedTarball_add_patches,curl, \
+    external/curl/clang-cl.patch.0 \
+))
+endif
+
+ifneq ($(filter -fsanitize=%,$(CC)),)
+$(eval $(call gb_UnpackedTarball_add_patches,curl, \
+    external/curl/asan-poison-nsspem.patch.0 \
+))
+endif
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/curl/asan-poison-nsspem.patch.0 b/external/curl/asan-poison-nsspem.patch.0
new file mode 100644
index 000000000..b348d44ee
--- /dev/null
+++ b/external/curl/asan-poison-nsspem.patch.0
@@ -0,0 +1,11 @@
+--- lib/vtls/nss.c
++++ lib/vtls/nss.c
+@@ -1926,7 +1926,7 @@
+ 
+   PK11_SetPasswordFunc(nss_get_password);
+ 
+-  result = nss_load_module(&pem_module, pem_library, "PEM");
++  result = CURLE_FAILED_INIT;
+   PR_Unlock(nss_initlock);
+   if(result == CURLE_FAILED_INIT)
+     infof(data, "WARNING: failed to load NSS PEM library %s. Using "
diff --git a/external/curl/clang-cl.patch.0 b/external/curl/clang-cl.patch.0
new file mode 100644
index 000000000..5dfb19d5b
--- /dev/null
+++ b/external/curl/clang-cl.patch.0
@@ -0,0 +1,11 @@
+--- winbuild/MakefileBuild.vc
++++ winbuild/MakefileBuild.vc
+@@ -52,7 +52,7 @@
+ !ELSE
+ CC_NODEBUG  = $(CC) /O2 /DNDEBUG
+ CC_DEBUG    = $(CC) /Od /D_DEBUG /RTC1 /Z7 /LDd
+-CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL $(SOLARINC)
++CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /EHsc /DWIN32 /c /DBUILDING_LIBCURL $(SOLARINC)
+ !ENDIF
+ 
+ LFLAGS     = /nologo /machine:$(MACHINE)
diff --git a/external/curl/configurable-z-option.patch.0 b/external/curl/configurable-z-option.patch.0
new file mode 100644
index 000000000..84516ad21
--- /dev/null
+++ b/external/curl/configurable-z-option.patch.0
@@ -0,0 +1,20 @@
+--- winbuild/MakefileBuild.vc.sav	2021-11-13 11:43:40.756226600 +0000
++++ winbuild/MakefileBuild.vc	2021-11-13 11:52:08.921692300 +0000
+@@ -47,7 +47,7 @@
+ 
+ !IF "$(VC)"=="6"
+ CC_NODEBUG  = $(CC) /O2 /DNDEBUG
+-CC_DEBUG    = $(CC) /Od /Gm /Zi /D_DEBUG /GZ
++CC_DEBUG    = $(CC) /Od /Gm $(DEBUG_FLAGS_VALUE) /D_DEBUG /GZ
+ CFLAGS      = /I. /I../lib /I../include /nologo /W4 /GX /DWIN32 /YX /FD /c /DBUILDING_LIBCURL
+ !ELSE
+ CC_NODEBUG  = $(CC) /O2 /DNDEBUG
+@@ -64,7 +64,7 @@
+ # Instead of id: just create an archive, that contains all objects
+ LNKLIB     = lib.exe
+ 
+-CFLAGS_PDB = /Zi
++CFLAGS_PDB = $(DEBUG_FLAGS_VALUE)
+ LFLAGS_PDB = /incremental:no /opt:ref,icf /DEBUG
+ 
+ CFLAGS_LIBCURL_STATIC  = /DCURL_STATICLIB
diff --git a/external/curl/curl-msvc-disable-protocols.patch.1 b/external/curl/curl-msvc-disable-protocols.patch.1
new file mode 100644
index 000000000..71ff0c01a
--- /dev/null
+++ b/external/curl/curl-msvc-disable-protocols.patch.1
@@ -0,0 +1,36 @@
+disable protocols nobody needs in MSVC build
+
+--- curl/lib/config-win32.h.orig	2017-08-09 16:43:29.464000000 +0200
++++ curl/lib/config-win32.h	2017-08-09 16:47:38.549200000 +0200
+@@ -654,4 +654,20 @@
+ #  define ENABLE_IPV6 1
+ #endif
+ 
++#define CURL_DISABLE_DICT 1
++#define CURL_DISABLE_FILE 1
++#undef CURL_DISABLE_FTP
++#define CURL_DISABLE_GOPHER 1
++#undef CURL_DISABLE_HTTP
++#define CURL_DISABLE_IMAP 1
++#define CURL_DISABLE_LDAP 1
++#define CURL_DISABLE_LDAPS 1
++#define CURL_DISABLE_MQTT 1
++#define CURL_DISABLE_POP3 1
++#define CURL_DISABLE_RTSP 1
++#define CURL_DISABLE_SMB 1
++#define CURL_DISABLE_SMTP 1
++#define CURL_DISABLE_TELNET 1
++#define CURL_DISABLE_TFTP 1
++
+ #endif /* HEADER_CURL_CONFIG_WIN32_H */
+--- curl/winbuild/MakefileBuild.vc.orig	2017-10-23 23:41:21.393200000 +0200
++++ curl/winbuild/MakefileBuild.vc	2017-10-23 23:34:16.028000000 +0200
+@@ -562,7 +562,7 @@
+ 
+ EXE_OBJS = $(CURL_OBJS) $(CURL_DIROBJ)\curl.res
+ 
+-all : $(TARGET) $(PROGRAM_NAME)
++all : $(TARGET)
+ 
+ package: $(TARGET)
+ 	@cd $(DIRDIST)
diff --git a/external/curl/curl-msvc-zlib.patch.1 b/external/curl/curl-msvc-zlib.patch.1
new file mode 100644
index 000000000..a9ee0013d
--- /dev/null
+++ b/external/curl/curl-msvc-zlib.patch.1
@@ -0,0 +1,16 @@
+find internal zlib in nmake buildsystem
+
+--- curl/winbuild/MakefileBuild.vc.orig2	2021-10-27 20:44:48.685237000 +0200
++++ curl/winbuild/MakefileBuild.vc	2021-10-27 20:47:23.792407400 +0200
+@@ -244,8 +244,9 @@
+ ZLIB_LIB_DIR = $(ZLIB_PATH)\lib
+ ZLIB_LFLAGS  = $(ZLIB_LFLAGS) "/LIBPATH:$(ZLIB_LIB_DIR)"
+ !ELSE
+-ZLIB_INC_DIR = $(DEVEL_INCLUDE)
+-ZLIB_LIB_DIR = $(DEVEL_LIB)
++ZLIB_INC_DIR = $(WORKDIR)/UnpackedTarball/zlib
++ZLIB_LIB_DIR = $(WORKDIR)/LinkTarget/StaticLibrary
++ZLIB_LFLAGS  = $(ZLIB_LFLAGS) "/LIBPATH:$(ZLIB_LIB_DIR)"
+ !ENDIF
+ 
+ # Depending on how zlib is built the libraries have different names, we
diff --git a/external/curl/curl-msvc.patch.1 b/external/curl/curl-msvc.patch.1
new file mode 100644
index 000000000..54ad026ec
--- /dev/null
+++ b/external/curl/curl-msvc.patch.1
@@ -0,0 +1,27 @@
+MSVC: using SOLARINC
+
+--- curl/winbuild/MakefileBuild.vc.orig	2017-10-23 16:36:07.713550851 +0200
++++ curl/winbuild/MakefileBuild.vc	2017-10-23 16:38:19.301547594 +0200
+@@ -52,7 +52,7 @@
+ !ELSE
+ CC_NODEBUG  = $(CC) /O2 /DNDEBUG
+ CC_DEBUG    = $(CC) /Od /D_DEBUG /RTC1 /Z7 /LDd
+-CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL
++CFLAGS      = /I. /I ../lib /I../include /nologo /W4 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL $(SOLARINC)
+ !ENDIF
+ 
+ LFLAGS     = /nologo /machine:$(MACHINE)
+@@ -426,11 +426,11 @@
+ # CURL_XX macros are for the curl.exe command
+ 
+ !IF "$(DEBUG)"=="yes"
+-RC_FLAGS = /dDEBUGBUILD=1 /Fo $@ $(LIBCURL_SRC_DIR)\libcurl.rc
++RC_FLAGS = $(SOLARINC) /dDEBUGBUILD=1 /Fo $@ $(LIBCURL_SRC_DIR)\libcurl.rc
+ CURL_CC       = $(CC_DEBUG) $(RTLIB_DEBUG)
+ CURL_RC_FLAGS = $(CURL_RC_FLAGS) /i../include /dDEBUGBUILD=1 /Fo $@ $(CURL_SRC_DIR)\curl.rc
+ !ELSE
+-RC_FLAGS = /dDEBUGBUILD=0 /Fo $@ $(LIBCURL_SRC_DIR)\libcurl.rc
++RC_FLAGS = $(SOLARINC) /dDEBUGBUILD=0 /Fo $@ $(LIBCURL_SRC_DIR)\libcurl.rc
+ CURL_CC       = $(CC_NODEBUG) $(RTLIB)
+ CURL_RC_FLAGS = $(CURL_RC_FLAGS) /i../include /dDEBUGBUILD=0 /Fo $@ $(CURL_SRC_DIR)\curl.rc
+ !ENDIF
diff --git a/external/curl/curl-nss.patch.1 b/external/curl/curl-nss.patch.1
new file mode 100644
index 000000000..2e8766b3d
--- /dev/null
+++ b/external/curl/curl-nss.patch.1
@@ -0,0 +1,17 @@
+diff -ur curl.org/configure curl/configure
+--- curl.orig/configure	2023-02-20 16:11:55.000000000 +0900
++++ curl/configure	2023-02-23 15:40:58.617432471 +0900
+@@ -28675,7 +28675,12 @@
+       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Using hard-wired libraries and compilation flags for NSS." >&5
+ printf "%s\n" "$as_me: WARNING: Using hard-wired libraries and compilation flags for NSS." >&2;}
+       addld="-L$OPT_NSS/lib"
+-      addlib="-lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4"
++      addlib="-lssl3 -lsmime3 -lnss3 -lplds4 -lplc4 -lnspr4 -lnssutil3"
++      case $host_os in
++        *android*)
++          addlib="${addlib} -llog"
++          ;;
++      esac
+       addcflags="-I$OPT_NSS/include"
+       version="unknown"
+       nssprefix=$OPT_NSS
diff --git a/external/curl/zlib.patch.0 b/external/curl/zlib.patch.0
new file mode 100644
index 000000000..b4442ba26
--- /dev/null
+++ b/external/curl/zlib.patch.0
@@ -0,0 +1,90 @@
+--- configure
++++ configure
+@@ -23035,7 +23035,6 @@
+ clean_CPPFLAGS=$CPPFLAGS
+ clean_LDFLAGS=$LDFLAGS
+ clean_LIBS=$LIBS
+-ZLIB_LIBS=""
+ 
+ # Check whether --with-zlib was given.
+ if test ${with_zlib+y}
+@@ -23045,6 +23044,7 @@
+ 
+ 
+ if test "$OPT_ZLIB" = "no" ; then
++    ZLIB_LIBS=""
+     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: zlib disabled" >&5
+ printf "%s\n" "$as_me: WARNING: zlib disabled" >&2;}
+ else
+@@ -23052,6 +23052,21 @@
+     OPT_ZLIB=""
+   fi
+ 
++ if test -n "$ZLIB_CFLAGS$ZLIB_LIBS"; then
++  CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
++  LIBS="$ZLIB_LIBS $LIBS"
++  HAVE_LIBZ="1"
++
++
++$as_echo "#define HAVE_ZLIB_H 1" >>confdefs.h
++
++
++$as_echo "#define HAVE_LIBZ 1" >>confdefs.h
++
++  AMFIXLIB="1"
++ else
++  ZLIB_LIBS=""
++
+   if test -z "$OPT_ZLIB" ; then
+ 
+     if test -n "$PKG_CONFIG"; then
+@@ -23344,6 +23359,7 @@
+ printf "%s\n" "$as_me: found both libz and libz.h header" >&6;}
+     curl_zlib_msg="enabled"
+   fi
++ fi
+ fi
+ 
+  if test x"$AMFIXLIB" = x1; then
+--- configure.ac
++++ configure.ac
+@@ -1243,19 +1243,30 @@
+ clean_CPPFLAGS=$CPPFLAGS
+ clean_LDFLAGS=$LDFLAGS
+ clean_LIBS=$LIBS
+-ZLIB_LIBS=""
+ AC_ARG_WITH(zlib,
+ AS_HELP_STRING([--with-zlib=PATH],[search for zlib in PATH])
+ AS_HELP_STRING([--without-zlib],[disable use of zlib]),
+                [OPT_ZLIB="$withval"])
+ 
+ if test "$OPT_ZLIB" = "no" ; then
++    ZLIB_LIBS=""
+     AC_MSG_WARN([zlib disabled])
+ else
+   if test "$OPT_ZLIB" = "yes" ; then
+     OPT_ZLIB=""
+   fi
+ 
++ if test -n "$ZLIB_CFLAGS$ZLIB_LIBS"; then
++  CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
++  LIBS="$ZLIB_LIBS $LIBS"
++  HAVE_LIBZ="1"
++  AC_SUBST(HAVE_LIBZ)
++  AC_DEFINE(HAVE_ZLIB_H, 1, [if you have the zlib.h header file])
++  AC_DEFINE(HAVE_LIBZ, 1, [if zlib is available])
++  AMFIXLIB="1"
++ else
++  ZLIB_LIBS=""
++
+   if test -z "$OPT_ZLIB" ; then
+     CURL_CHECK_PKGCONFIG(zlib)
+ 
+@@ -1336,6 +1347,7 @@
+     AC_MSG_NOTICE([found both libz and libz.h header])
+     curl_zlib_msg="enabled"
+   fi
++ fi
+ fi
+ 
+ dnl set variable for use in automakefile(s)