cmake 4.x requires packages to claim compatibility with at least cmake 3.5

[hnyman]

Package Name

• base16384
• bluld
• canutils canutils: Update to 2025.01 #27850
• cereal cereal: Update to 1.3.2 #27849
• cgi-io
• cjson
• ecdsautils ecdsautils: add cmake 4.x compatibility #27861
• hidapi
• leptonica
• libftdi libftdi: drop package #27902
• libftdi1 libftdi1: require cmake >= 3.10 due to removed legacy support #27762
• libid3tag
• liblo
• libmad
• libnatpmp
• libradiotap
• libroxml
• libsndfile
• libsoxr
• libssh
• libtins
• libuecc
• libvorbis
• libwebsockets
• libyaml-cpp
• libyang
• lua-cjson
• lua-ev lua-ev: add pending patch for CMake >= 4.0 support #27926
• lualanes
• luv luv: Update to 1.51.0-1 #27864
• lzmq
• lzo
• mbpoll mbpoll: add cmake 4.x compatibility #27860
• mbusd
• mjpg-streamer mjpg-streamer: add cmake 4.x compatibility #27878
• msgpack-c
• nlbwmon
• openelp openelp: Update to 0.9.3 #27862
• openobex
• phantap
• portaudio
• protobuf
• qrencode
• quectel-timesync
• realtek-poe
• respondd
• rtpmidid rtpmidid: bump to version 24.12 #27939
• softethervpn5 softethervpn5: bump to version 5.2.5188 #27841
• spawn-fcgi
• swanmon
• sysrepo libnetconf2, sysrepo, netopeer2: fix CMake >= 4.0 compatibility  #27925
• telldus-core
• tiff libtiff: update to 4.7.1 #27764
• tini
• tunneldigger
• uci2 uci2: Update to 2.0.0 #27859
• uledd
• usteer
• v4l2camera
• v4l2rtspserver
• v4l2tools
• xxhash
• yajl
• zlog zlog: add cmake 4.x compatibility #27882
• zmq zmq: add cmake 4.x compatibility #27877

Maintainer

OpenWrt Version

• master

Steps to Reproduce

cmake used in the toolchain for compilation of 250+ packages, will be updated to 4.1.2 in near future.
See openwrt/openwrt#20265

Many packages have already be fixed by their upstreams: the minimum definition in each package's CMakeLists.txt has been already updated to a suitable value.
(so far the local packages in the main OpenWrt repo have been updated to be compatible, by setting the minimum value to cmake 3.10)

The proper final solution is for each upstream to update their packages sources (at upstream). In meanwhile, we can patch the CMakeLists.txt at the package locally, but that will be cumbersome.

The minimum will now be 3.5 and soon that will change to 3.10.

Testing done by building all packages, reveals that about 80 packages will fail to build with cmake 4.1.2.

If you are maintaining / updating any of them, please fix also the needed cmake version minimum at the same time. Otherwise the package build will break soon.

List from Hauke's testing:

Details

hauke@debian-16gb-nbg1-1:~/openwrt/openwrt$ grep "Compatibility with CMake < 3.5 has been removed from CMake" logs/ -r 
logs/package/feeds/packages/openobex/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libsoxr/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/bluld/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/softethervpn5/host-compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lualanes/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/realtek-poe/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lua-cjson/lua-53/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lua-cjson/lua-51/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lua-cjson/lua-54/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/openelp/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libyaml-cpp/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/base16384/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/leptonica/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libftdi/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/uledd/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/mjpg-streamer/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/v4l2camera/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libmad/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/telldus-core/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/zmq/curve/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/zmq/nc/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libftdi1/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/mbusd/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/cjson/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/sysrepo/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/tini/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/canutils/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/tunneldigger/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libnatpmp/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/quectel-timesync/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/usteer/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/rtpmidid/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/tiff/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/xxhash/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/hidapi/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/luv/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/liblo/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libvorbis/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libtins/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lzmq/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libsndfile/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libyang/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libid3tag/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/cereal/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/mbpoll/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/uci2/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/v4l2tools/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/nlbwmon/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/cgi-io/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libuecc/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libssh/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/portaudio/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/phantap/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libroxml/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/qrencode/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lua-ev/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/spawn-fcgi/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/zlog/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/ecdsautils/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/yajl/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libwebsockets/mbedtls/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libwebsockets/full/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libwebsockets/openssl/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/respondd/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/msgpack-c/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/lzo/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/swanmon/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/protobuf/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/protobuf/host-compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/libradiotap/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/packages/v4l2rtspserver/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/routing/oonf-dlep-proxy/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/routing/oonf-dlep-radio/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/routing/oonf-olsrd2/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/routing/ohybridproxy/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/routing/minimalist-pcproxy/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/luci/lucihttp/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/telephony/sipp/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/telephony/bcg729/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.
logs/package/feeds/video/libdouble-conversion/compile.txt:  Compatibility with CMake < 3.5 has been removed from CMake.

[hauke]

cgi-io was fixed here: #27597
usteer was fixed here: #27596

[champtar]

Ping @openwrt/packages-write, if you maintain a package that use cmake, it might need patching, please have a look at this issue

[Ansuel]

To move things up and push for faster update, I merged the cmake update in core.

feeds follow a different update path and it's ok to have broken package while they get fixed as our buildbot will eventually pick the fixed package and they will come again later.

[Jalakas]

tiff also needed some help with building:

--- libs/tiff/Makefile
+++ libs/tiff/Makefile
@@ -55,7 +55,8 @@
 	-Dwebp=OFF \
 	-Djpeg12=OFF \
 	-Dcxx=OFF \
-	-Dlibdeflate=OFF
+	-Dlibdeflate=OFF \
+	-DCMAKE_POLICY_VERSION_MINIMUM=3.5
 
 define Build/InstallDev
 	$(call Build/InstallDev/cmake,$(1))

[cotequeiroz]

Despite not being included in the list, the afalg_engine package needed the policy bump as well, done with 9959178.

[Ansuel]

Thanks a lot @cotequeiroz

[Ansuel]

tiff also needed some help with building:

--- libs/tiff/Makefile
+++ libs/tiff/Makefile
@@ -55,7 +55,8 @@
 	-Dwebp=OFF \
 	-Djpeg12=OFF \
 	-Dcxx=OFF \
-	-Dlibdeflate=OFF
+	-Dlibdeflate=OFF \
+	-DCMAKE_POLICY_VERSION_MINIMUM=3.5
 
 define Build/InstallDev
 	$(call Build/InstallDev/cmake,$(1))

No introduce a patch please, don't use the policy flag...