[Buildroot] [PATCH] package/poco: convert to CMake package

[Thomas Petazzoni]

Hello Yegor,

On Wed, Jul 01, 2026 at 03:56:40PM +0200, yegorslists--- via buildroot wrote:
> From: Yegor Yefremov <yegorslists at googlemail.com>
> 
> Currently when building with make, the cmake config files are not
> generated. This leads to problems when integrating the package in an
> application built with cmake.
> 
> This patch is based on this one:
> https://lists.buildroot.org/pipermail/buildroot/2026-April/801019.html
> 
> Signed-off-by: Yegor Yefremov <yegorslists at googlemail.com>

Sorry for the delay in getting back to you. Unfortunately, this patch
breaks the build.

I've tested this configuration:

BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
BR2_INIT_NONE=y
BR2_SYSTEM_BIN_SH_NONE=y
# BR2_PACKAGE_BUSYBOX is not set
BR2_PACKAGE_POCO=y
BR2_PACKAGE_POCO_ACTIVERECORD=y
BR2_PACKAGE_POCO_CPP_PARSER=y
BR2_PACKAGE_POCO_DATA_MYSQL=y
BR2_PACKAGE_POCO_DATA_PGSQL=y
BR2_PACKAGE_POCO_DATA_SQLITE=y
BR2_PACKAGE_POCO_JWT=y
BR2_PACKAGE_POCO_MONGODB=y
BR2_PACKAGE_POCO_NETSSL_OPENSSL=y
BR2_PACKAGE_POCO_PDF=y
BR2_PACKAGE_POCO_PROMETHEUS=y
BR2_PACKAGE_POCO_REDIS=y
BR2_PACKAGE_POCO_ZIP=y
# BR2_TARGET_ROOTFS_TAR is not set

which basically has all Poco sub-options enabled. And it fails with:

CMake Error at /home/thomas/projets/buildroot/output/host/share/cmake-4.4/Modules/FindPackageHandleStandardArgs.cmake:290 (message):
  Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR)
Call Stack (most recent call first):
  /home/thomas/projets/buildroot/output/host/share/cmake-4.4/Modules/FindPackageHandleStandardArgs.cmake:654 (_FPHSA_FAILURE_MESSAGE)
  /home/thomas/projets/buildroot/output/host/share/cmake-4.4/Modules/FindPNG.cmake:218 (find_package_handle_standard_args)
  PDF/CMakeLists.txt:93 (find_package)

So it seems like it now needs libpng? Not sure under what conditions.

Same build, but without your patch: the build completes successfully.

Could you have a look and submit a v2?

Thanks!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com