CMake Error at /usr/lib64/cmake/vtk-9.4/FindPEGTL.cmake:27 (set_target_properties)

Start with OCP/CMakeLists.txt at the find_package call, then inspect VTK 9.4's FindPEGTL.cmake and the dump_symbols.py traceback for the missing logzero module. Re-run the Gentoo CMake configuration to isolate both failures; done means OCP configures successfully with Python 3.13, VTK 9.4.2, and PEGTL.

Trying to build OCP 7.8.1.2 on a modern Gentoo.

cmake -C /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2/gentoo_common_config.cmake -G Ninja -DCMAKE_INSTALL_PREFIX=/usr -B /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2/OCP.build -DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=ON -Wno-dev -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_TOOLCHAIN_FILE=/var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2/gentoo_toolchain.cmake /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2
loading initial cache file /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2/gentoo_common_config.cmake
-- The C compiler identification is GNU 14.2.1
-- The CXX compiler identification is GNU 14.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/lib/ccache/bin/x86_64-pc-linux-gnu-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/lib/ccache/bin/x86_64-pc-linux-gnu-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test HAVE_FFI_CALL
-- Performing Test HAVE_FFI_CALL - Success
-- Found FFI: /usr/lib64/libffi.so
-- Found ZLIB: /usr/lib64/libz.so (found version "1.3.1")
-- Found zstd: /usr/lib64/libzstd.so
-- Found LibXml2: /usr/lib64/libxml2.so (found version "2.13.8")
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib64/libX11.so;/usr/lib64/libXext.so
-- Looking for XOpenDisplay in /usr/lib64/libX11.so;/usr/lib64/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found Python3: /usr/bin/python3 (found suitable version "3.13.7", minimum required is "3.13") found components: Interpreter Development.Module Development.Embed
-- Found TIFF: /usr/lib64/libtiff.so (found version "4.7.0")
-- Found PNG: /usr/lib64/libpng.so (found version "1.6.50")
-- Found JPEG: /usr/lib64/libjpeg.so (found version "62")
-- Could NOT find freetype (missing: freetype_DIR)
-- Found Freetype: /usr/lib64/libfreetype.so (found version "2.13.3")
-- Searching for PEGTL
-- Searching for PEGTL - found target taocpp::pegtl
-- Found OpenMP_C: -fopenmp (found version "4.5")
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Found double-conversion: /usr/lib64/libdouble-conversion.so
-- Found nlohmann_json: /usr/share/cmake/nlohmann_json/nlohmann_jsonConfig.cmake (found version "3.12.0")
-- VTK 9.4.2 found
-- RapidJSON found. Headers: /usr/include
-- Found Python: /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/temp/python3.13/bin/python3 (found suitable version "3.13.7", minimum required is "3.9") found components: Interpreter Development Development.Module Development.Embed
Traceback (most recent call last):
  File "/var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/work/OCP-7.8.1.2/dump_symbols.py", line 4, in <module>
    from logzero import logger
ModuleNotFoundError: No module named 'logzero'
-- Include dirs: /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14;/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/x86_64-pc-linux-gnu;/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/backward;/usr/lib/gcc/x86_64-pc-linux-gnu/14/include;/usr/x86_64-pc-linux-gnu/include;/usr/include
-- Found Python: /var/tmp/portage/dev-python/cadquery-ocp-7.8.1.2/temp/python3.13/bin/python3 (found version "3.13.7") found components: Interpreter Development Development.Module Development.Embed
-- Python lib: /usr/lib64/libpython3.13.so
-- Performing Test HAS_FLTO
-- Performing Test HAS_FLTO - Success
-- Found pybind11: /usr/include (found version "2.13.6")
-- Could NOT find freetype (missing: freetype_DIR)
-- Searching for PEGTL
-- Searching for PEGTL - found target taocpp::pegtl
CMake Error at /usr/lib64/cmake/vtk-9.4/FindPEGTL.cmake:27 (set_target_properties):
  Attempt to promote imported target "taocpp::pegtl" to global scope (by
  setting IMPORTED_GLOBAL) which is not built in this directory.
Call Stack (most recent call first):
  /usr/lib64/cmake/vtk-9.4/VTK-vtk-module-find-packages.cmake:1813 (find_package)
  /usr/lib64/cmake/vtk-9.4/vtk-config.cmake:170 (include)
  OCP/CMakeLists.txt:17 (find_package)


-- Found OpenMP_C: -fopenmp (found version "4.5")
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- VTK 9.4.2 found
-- <<< Gentoo configuration >>>
Build type      RelWithDebInfo
Install path    /usr
Compiler flags:
C               -O2 -pipe -march=skylake -mtune=native -ftree-vectorize -malign-data=cacheline -mtls-dialect=gnu2
C++             -O2 -pipe -march=skylake -mtune=native -ftree-vectorize -malign-data=cacheline -mtls-dialect=gnu2
Linker flags:
Executable      -Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--hash-style=gnu
Module          -Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--hash-style=gnu
Shared          -Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--hash-style=gnu

-- Configuring incomplete, errors occurred!

Used to build fine in the summer (python 3.12, vtk 9.3.1).