{"action":"created","issue":{"url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/87","repository_url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix","labels_url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/87/labels{/name}","comments_url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/87/comments","events_url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/87/events","html_url":"https://github.com/hzeller/rpi-rgb-led-matrix/issues/87","id":117900300,"number":87,"title":"led-image-viewer compile error /usr/bin/ld: cannot find -lwebp","user":{"login":"jwheare","id":49224,"avatar_url":"https://avatars.githubusercontent.com/u/49224?v=3","gravatar_id":"","url":"https://api.github.com/users/jwheare","html_url":"https://github.com/jwheare","followers_url":"https://api.github.com/users/jwheare/followers","following_url":"https://api.github.com/users/jwheare/following{/other_user}","gists_url":"https://api.github.com/users/jwheare/gists{/gist_id}","starred_url":"https://api.github.com/users/jwheare/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jwheare/subscriptions","organizations_url":"https://api.github.com/users/jwheare/orgs","repos_url":"https://api.github.com/users/jwheare/repos","events_url":"https://api.github.com/users/jwheare/events{/privacy}","received_events_url":"https://api.github.com/users/jwheare/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2015-11-19T20:25:28Z","updated_at":"2016-09-13T17:29:47Z","closed_at":"2015-11-19T20:44:39Z","body":"I'm getting an error trying to `make led-image-viewer`\r\n\r\n`/usr/bin/ld: cannot find -lwebp`\r\n\r\nHere's the full log and info on my installed version of `libgraphicsmagick++1-dev`\r\n\r\nAre there other deps I should install?\r\n\r\n(Also I noticed the source comment still says to install image-magick even though the README has been updated to say GraphicsMagick https://github.com/hzeller/rpi-rgb-led-matrix/blob/master/led-image-viewer.cc#L17)\r\n\r\n```\r\npi@raspberrypi ~/led/rpi-rgb-led-matrix $ make\r\ng++ -Iinclude -Wall -O3 -g -c -o demo-main.o demo-main.cc\r\nmake -C lib\r\nmake[1]: Entering directory '/home/pi/led/rpi-rgb-led-matrix/lib'\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o gpio.o gpio.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o led-matrix.o led-matrix.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o framebuffer.o framebuffer.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o thread.o thread.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o bdf-font.o bdf-font.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o graphics.o graphics.cc\r\ng++ -I../include -Wall -O3 -g -fPIC -DRGB_SLOWDOWN_GPIO=1 -DADAFRUIT_RGBMATRIX_HAT -c -o transformer.o transformer.cc\r\nar rcs librgbmatrix.a gpio.o led-matrix.o framebuffer.o thread.o bdf-font.o graphics.o transformer.o\r\nmake[1]: Leaving directory '/home/pi/led/rpi-rgb-led-matrix/lib'\r\ng++ -Wall -O3 -g demo-main.o -o led-matrix -Llib -lrgbmatrix -lrt -lm -lpthread\r\ng++ -Iinclude -Wall -O3 -g -c -o minimal-example.o minimal-example.cc\r\ng++ -Wall -O3 -g minimal-example.o -o minimal-example -Llib -lrgbmatrix -lrt -lm -lpthread\r\ng++ -Iinclude -Wall -O3 -g -c -o text-example.o text-example.cc\r\ng++ -Wall -O3 -g text-example.o -o text-example -Llib -lrgbmatrix -lrt -lm -lpthread\r\n\r\npi@raspberrypi ~/led/rpi-rgb-led-matrix $ make led-image-viewer\r\ng++ -Iinclude -Wall -O3 -g `GraphicsMagick++-config --cppflags --cxxflags` -c -o led-image-viewer.o led-image-viewer.cc\r\nmake -C lib\r\nmake[1]: Entering directory '/home/pi/led/rpi-rgb-led-matrix/lib'\r\nmake[1]: Leaving directory '/home/pi/led/rpi-rgb-led-matrix/lib'\r\ng++ -Wall -O3 -g led-image-viewer.o -o led-image-viewer -Llib -lrgbmatrix -lrt -lm -lpthread `GraphicsMagick++-config --ldflags --libs`\r\n/usr/bin/ld: cannot find -lwebp\r\ncollect2: error: ld returned 1 exit status\r\nMakefile:35: recipe for target 'led-image-viewer' failed\r\nmake: *** [led-image-viewer] Error 1\r\n\r\npi@raspberrypi ~/led/rpi-rgb-led-matrix $ aptitude show libgraphicsmagick++1-dev\r\nPackage: libgraphicsmagick++1-dev \r\nState: installed\r\nAutomatically installed: no\r\nVersion: 1.3.20-3+rpi1\r\nPriority: optional\r\nSection: libdevel\r\nMaintainer: Laszlo Boszormenyi (GCS) <gcs@debian.org>\r\nArchitecture: armhf\r\nUncompressed Size: 1,457 k\r\nDepends: libgraphicsmagick++3 (= 1.3.20-3+rpi1), libgraphicsmagick1-dev\r\nSuggests: graphicsmagick\r\nConflicts: libgraphicsmagick++-dev\r\nReplaces: libgraphicsmagick++-dev\r\nProvides: libgraphicsmagick++-dev\r\nDescription: format-independent image processing - C++ development files\r\n GraphicsMagick provides libraries in several programming languages to read, write and manipulate image files across a large number of\r\n formats, from the widely used jpeg, tiff, bmp or xpm to special-purpose formats such as fits or image formats found on some photo CDs.\r\n There are functions for finegrained image processing tasks, as well as conversion routines between the various image formats. \r\n \r\n The GraphicsMagick library is a fork of ImageMagick and therefore offers an interface that is similar in features, but intended to be\r\n more stable across releases. While compatibility does not go so far that the GraphicsMagick library serves as a drop-in replacement\r\n for ImageMagick, conversion can usually be done with little effort. \r\n \r\n This package contains the C++ development headers and library files needed to compile programs using the GraphicsMagick++ library.\r\nHomepage: http://www.graphicsmagick.org/\r\n\r\npi@raspberrypi ~/led/rpi-rgb-led-matrix $ \r\n```"},"comment":{"url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/comments/246759007","html_url":"https://github.com/hzeller/rpi-rgb-led-matrix/issues/87#issuecomment-246759007","issue_url":"https://api.github.com/repos/hzeller/rpi-rgb-led-matrix/issues/87","id":246759007,"user":{"login":"crale","id":22176978,"avatar_url":"https://avatars.githubusercontent.com/u/22176978?v=3","gravatar_id":"","url":"https://api.github.com/users/crale","html_url":"https://github.com/crale","followers_url":"https://api.github.com/users/crale/followers","following_url":"https://api.github.com/users/crale/following{/other_user}","gists_url":"https://api.github.com/users/crale/gists{/gist_id}","starred_url":"https://api.github.com/users/crale/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/crale/subscriptions","organizations_url":"https://api.github.com/users/crale/orgs","repos_url":"https://api.github.com/users/crale/repos","events_url":"https://api.github.com/users/crale/events{/privacy}","received_events_url":"https://api.github.com/users/crale/received_events","type":"User","site_admin":false},"created_at":"2016-09-13T17:29:47Z","updated_at":"2016-09-13T17:29:47Z","body":"Yes, I installed all of them."}}
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