Thanks Michael, that's got to be it.

On 01/18/2016 08:00 PM, gimp-developer-list-request@gnome.org wrote:

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Today's Topics:

1. gimp 2.9 build on linux, now jpeg, tiff, etc are unknown file types (John)
2. Re: gimp 2.9 build on linux, now jpeg, tiff, etc are unknown file types (Michael Schumacher)

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Message: 1 Date: Mon, 18 Jan 2016 18:57:30 +0800 From: John
To: gimp-developer-list@gnome.org
Subject: [Gimp-developer] gimp 2.9 build on linux, now jpeg, tiff, etc are unknown file types
Message-ID:
Content-Type: text/plain; charset=utf-8; format=flowed

I've been using gimp 2.9.2 and 2.9.3, building from a git clone without issues, using a subdirectory of my home for the install location.

I've now moved the install location to /usr/local, and the autogen, make and make install steps complete without errors. Note: I now use sudo make install in order to add files to /usr/local, before I simply invoked make install to send files to my home/gimp subdirectory.

However the new build of gimp does not recognize common image types such as jpeg, tiff, etc. During the autogen step, I get output: /
/

/checking for TIFFReadScanline in -ltiff... yes/ /checking tiffio.h usability... yes/ /checking tiffio.h presence... yes/ /checking for tiffio.h... yes/
/checking for jpeg_destroy_decompress in -ljpeg... yes/ /checking for jpeglib.h... yes/ /checking for jpeg_save_markers in -ljpeg... yes

...

config.status: creating plug-ins/file-jpeg/Makefile config.status: creating plug-ins/file-psd/Makefile config.status: creating plug-ins/file-sgi/Makefile config.status: creating plug-ins/file-tiff/Makefile

/

which looks hopeful, but at the end there's no mention of jpg or tiff file support (just JPEG2000),

/Building GIMP with prefix=/usr/local, datarootdir=${prefix}/share// //Desktop files install into ${datarootdir}// //
//Extra Binaries://
// gimp-console: yes//
//
//Optional Features://
// Language selection: yes//
//
//Optional Plug-Ins://
// Ascii Art: no (AA library not found)// // Ghostscript: no (Ghostscript library not found)// // Help Browser: no (WebKit not found)// // JPEG 2000: yes//
// MNG: yes//
// OpenEXR: yes//
// PDF (import): Using PostScript plug-in (libpoppler-glib not found)//
// PDF (export): yes//
// Print: yes//
// Python 2: yes//
// Script-Fu: yes//
// SVG: yes//
// TWAIN (MacOS X): no//
// TWAIN (Win32): no//
// Webpage: no (WebKit not found)// // WMF: no (libwmf not found)// // X11 Mouse Cursor: yes//
// XPM: yes/

Shared libraries for tiff and jpeg exist on my system (as I said, gimp 2.9 worked when the install target was my home directory).

/ldconfig -p | grep tiff/ / libtiffxx.so.5 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libtiffxx.so.5/ / libtiffxx.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libtiffxx.so/ / libtiff.so.5 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libtiff.so.5/ / libtiff.so.5 (libc6) => /usr/lib/i386-linux-gnu/libtiff.so.5/ / libtiff.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libtiff.so/

There must be a simple explanation, I just can't think of it!

------------------------------

Message: 2 Date: Mon, 18 Jan 2016 12:05:01 +0100 From: Michael Schumacher
To: gimp-developer-list@gnome.org
Subject: Re: [Gimp-developer] gimp 2.9 build on linux, now jpeg, tiff, etc are unknown file types
Message-ID:
Content-Type: text/plain; charset=windows-1252

Am 18.01.2016 um 11:57 schrieb John:

There must be a simple explanation, I just can't think of it!

Check where you are pointing GIMP to find its plug-ins. This is in the preferences.