DMARC-Filter:	OpenDMARC Filter v1.4.2 delorie.com 5BTGhPW73678420
Authentication-Results:	delorie.com; dmarc=pass (p=none dis=none) header.from=cygwin.com
Authentication-Results:	delorie.com; spf=pass smtp.mailfrom=cygwin.com
DKIM-Filter:	OpenDKIM Filter v2.11.0 delorie.com 5BTGhPW73678420
Authentication-Results:	delorie.com;
	dkim=pass (1024-bit key, unprotected) header.d=cygwin.com header.i=@cygwin.com header.a=rsa-sha256 header.s=default header.b=ckmipoZN
X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 963AC4BA2E07
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1767026604;
	bh=zg4Z7NKrKF1yPw5ckyhFzq6Qo4DncQGuDlYCqsOCZc0=;
	h=Subject:Date:To:List-Id:List-Unsubscribe:List-Archive:List-Post:
	List-Help:List-Subscribe:From:Reply-To:From;
	b=ckmipoZNJh2R3GnywSGfFoyk7Ty5xIBFe4K2uGGWtYixdX3a83EjRCQ0g7aQDxREV
	h65ASqzt5rpbYfSvQUaFLJVhTR6ir5vBGbX0O7Ws1LpMX/PsNHEdDtlZnsLK2dj063
	2/wJox6q6xRCOkxlBBzm2jbGo9SghHnLybpBUHI4=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.2 sourceware.org 75E5E4BA2E04
ARC-Filter:	OpenARC Filter v1.0.0 sourceware.org 75E5E4BA2E04
ARC-Seal:	i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1767026555; cv=none;
	b=hvYx1fTMGo4ACp2KGtoNFwM4g1GPBW7ldKpoJkKrmn5Ci3ZixHDtHTzWm5WFKetwh+KPHq1c9DhDvnOpft1O9SLYNJewa+bRD+qjc+2xDFyInn8PAtgOI1HjjBSRyEOlstDFhXMScdHA7bv92iEbJYEQMElACJ9R9B8F5IyUvxc=
ARC-Message-Signature:	i=1; a=rsa-sha256; d=sourceware.org; s=key;
	t=1767026555; c=relaxed/simple;
	bh=0cz+hDlhi33xAldZkVh5Lqxe9IQjOL2wLewev4LhiGI=;
	h=From:Mime-Version:Subject:Message-Id:Date:To;
	b=ijeUSD1wVKA53BUZx0obI6js1ojPdbW84Dyhvi9eCJWcF/luDy1Z/CupOl1itqnMRLbmz34khs1e/Vntq9eKTASi41yR5cMCvXiRizw3q5Pn2X9YycA8xvRtq1x4hfQca4IS/SVtqAdoULfxunkt9CQpeL0G35TgG7wrmEIVQ28=
ARC-Authentication-Results:	i=1; server2.sourceware.org
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 75E5E4BA2E04
Mime-Version:	1.0 (Mac OS X Mail 16.0 \(3826.700.81.1.3\))
Subject:	Failure to link with libjpeg.a using cmake configuration
Message-Id:	<AAE47C2C-22AE-4EB9-B5DB-209C99B4D239@codelibre.net>
Date:	Mon, 29 Dec 2025 16:42:22 +0000
To:	cygwin AT cygwin DOT com
X-Mailer:	Apple Mail (2.3826.700.81.1.3)
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.30
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	Roger Leigh via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Roger Leigh <rleigh AT codelibre DOT net>
Sender:	"Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id 5BTGhPW73678420

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.


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

- Raw text -