netgen-6.2.2406 failed to link with libjpeg

[alexxy]

Hi!

While building netgen on Gentoo linux i found an issue

FAILED: ng/netgen 
: && /usr/bin/x86_64-pc-linux-gnu-g++ -O2 -pipe -march=skylake -mtune=skylake -Wl,-O1,--hash-style=gnu,--sort-common,--as-needed     -Wl,--dependency-file=ng/CMakeFiles/netgen.dir/link.d ng/CMakeFiles/netgen.dir/ngappinit.cpp.o -o ng/netgen  -Wl,-rpath,/var/tmp/portage/media-gfx/netgen-6.2.2406/work/netgen-6.2.2406_build:/var/tmp/portage/media-gfx/netgen-6.2.2406/work/netgen-6.2.2406_build/libsrc/core:  libnggui.so  /usr/lib64/libtcl.so  /usr/lib64/libtk.so  libnglib.so  libsrc/core/libngcore.so  -ldl  ng/Togl2.1/libtogl.a  /usr/lib64/libXmu.so  /usr/lib64/libX11.so  /usr/lib64/libtclstub.a  /usr/lib64/libtkstub.a  /usr/lib64/libOpenGL.so  /usr/lib64/libGLX.so  /usr/lib64/libGLU.so && :
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_set_defaults'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_write_scanlines'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_set_quality'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_stdio_dest'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_start_compress'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_std_error'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_finish_compress'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_destroy_compress'
/usr/lib/gcc/x86_64-pc-linux-gnu/14/../../../../x86_64-pc-linux-gnu/bin/ld: libnggui.so: undefined reference to `jpeg_CreateCompress'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

Config options

cmake -C /var/tmp/portage/media-gfx/netgen-6.2.2406/work/netgen-6.2.2406_build/gentoo_common_config.cmake -G Ninja -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_STUB_FILES=OFF -DENABLE_UNIT_TESTS=no -DINSTALL_PROFILES=OFF -DNG_INSTALL_DIR_CMAKE=lib64/cmake/netgen -DNG_INSTALL_DIR_INCLUDE=include/netgen -DNG_INSTALL_DIR_LIB=lib64 -DUSE_CCACHE=OFF -DUSE_CGNS=OFF -DUSE_GUI=yes -DUSE_INTERNAL_TCL=OFF -DUSE_JPEG=yes -DUSE_MPEG=no -DUSE_NATIVE_ARCH=OFF -DUSE_MPI=no -DUSE_OCC=yes -DUSE_PYTHON=no -DUSE_SUPERBUILD=OFF -DNETGEN_VERSION_GIT=v6.2.2406 -DTK_INCLUDE_PATH=/usr/lib64/tk8.6/include -DUSE_MPI4PY=OFF -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_TOOLCHAIN_FILE=/var/tmp/portage/media-gfx/netgen-6.2.2406/work/netgen-6.2.2406_build/gentoo_toolchain.cmake /var/tmp/portage/media-gfx/netgen-6.2.2406/work/netgen-6.2.2406

Ref for gentoo bug https://bugs.gentoo.org/947728