On Mon, 29 Dec 2025, Marco Atzeri via Cygwin wrote: > On 29/12/2025 17:42, Roger Leigh via Cygwin wrote: > > Hi,
> > I’m trying to test libtiff on Cygwin, and I’m running into a failure. It’s > > finding and linking on all platforms with the exception of Cygwin > > (including MinGW64 and MSVC). For example: > > https://gitlab.com/libtiff/libtiff/-/pipelines/2236584193 > > -- Found ZLIB: /usr/lib/libz.dll.a (found version "1.3.1") > > -- Found Deflate: /usr/lib/libdeflate.dll.a (found version "1.25") > > CMake Error at /usr/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake:99 > > (message): > > The imported target "libjpeg-turbo::jpeg" references the file > > "/usr/lib/libjpeg.dll.a" > > but this file does not exist. Possible reasons include: > > * The file was deleted, renamed, or moved to another location. > > * An install or uninstall procedure did not complete successfully. > > * The installation package was faulty and contained > > "/usr/lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake" > > but not all the files it references. > > Call Stack (most recent call first): > > /usr/lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake:37 (include) > > cmake/JPEGCodec.cmake:36 (find_package) > > It is entirely correct. The file that’s mentioned in the installed CMake > > config file does not exist. > > $ find lib -name '*jpeg*' > > lib/cmake/libjpeg-turbo > > lib/cmake/libjpeg-turbo/libjpeg-turboConfig.cmake > > lib/cmake/libjpeg-turbo/libjpeg-turboConfigVersion.cmake > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets-relwithdebinfo.cmake > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets.cmake > > lib/gdk-pixbuf-2.0/2.10.0/loaders/cygpixbufloader-jpeg.dll > > lib/libopenjpeg.dll.a > > lib/libturbojpeg.dll.a > > lib/openjpeg-1.5 > > lib/pkgconfig/libopenjpeg.pc > > lib/pkgconfig/libopenjpeg1.pc > > lib/pkgconfig/libturbojpeg.pc > > $ find bin -name '*jpeg*' > > bin/cygjpeg-8.dll > > bin/cygopenjpeg-1.dll > > bin/cygturbojpeg-0.dll > > So the DLL exists, but the import library does not. Everything else is > > present and correct as far as I can tell, but something is not right here. > > The import library is missing. > > $ grep '\.a' lib/cmake/libjpeg-turbo/* > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets-relwithdebinfo.cmake: > > IMPORTED_IMPLIB_RELWITHDEBINFO "${_IMPORT_PREFIX}/lib/libjpeg.dll.a" > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets-relwithdebinfo.cmake:list(APPEND > > _cmake_import_check_files_for_libjpeg-turbo::jpeg > > "${_IMPORT_PREFIX}/lib/libjpeg.dll.a" "${_IMPORT_PREFIX}/bin/cygjpeg-8.dll" > > ) > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets-relwithdebinfo.cmake: > > IMPORTED_IMPLIB_RELWITHDEBINFO "${_IMPORT_PREFIX}/lib/libturbojpeg.dll.a" > > lib/cmake/libjpeg-turbo/libjpeg-turboTargets-relwithdebinfo.cmake:list(APPEND > > _cmake_import_check_files_for_libjpeg-turbo::turbojpeg > > "${_IMPORT_PREFIX}/lib/libturbojpeg.dll.a" > > "${_IMPORT_PREFIX}/bin/cygturbojpeg-0.dll" ) > > Because it’s referenced in the configuration, and has the DLL, and > > everything but this file is installed, this looks like a packaging error > > hence reporting it here as a bug. > install libjpeg-devel Pillow, a dependency of the python mastodon TUI app, mastui also requires libjpeg-devel. RequiredDependencyException: The headers or library files could not be found for jpeg, a required dependency when compiling Pillow from source. > https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86_64%2Flibjpeg-devel%2Flibjpeg-devel-3.1.3-1&grep=libjpeg.dll.a > > Kind regards, > > Roger > -- > Problem reports: https://cygwin.com/problems.html > FAQ: https://cygwin.com/faq/ > Documentation: https://cygwin.com/docs.html > Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple -- Greg "Dr Bean" Matheson None of the language can be explained well http://drbean.sdf.org until most of it has already been explained. [email protected] --Norman Cohen -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
