Building pHash 0.9.4 on OSX can turn out to be tricky. For those of you who've run into issues, my somewhat lengthy answer below might help.
Make sure you've got macports fully updated and working. This means a recent Xcode, and inside Xcode preferences->downloads->components install Command-Line Tools !
$ sudo port selfupdate
# if you've had previous build issues:
$ sudo port clean --all
# get pHash
wget http://www.phash.org/releases/pHash-0.9.4.tar.gz
tar zxvf pHash-0.9.4.tar.gz
cd pHash-0.9.4
# remove old versions of ffmpeg, e.g.
$ sudo port installed ffmpeg
$ sudo port uninstall --follow-dependents ffmpeg @0.7.11_1+mmx
$ sudo port uninstall --follow-dependents ffmpeg @0.7.8_0
# install latest ffmpeg-devel version (@20120329 for me) - enable the non-free stuff as well
$ sudo port install ffmpeg-devel +nonfree
# double check that you have some new header files
$ ll -tr /opt/local/include/
total 8816
-rw-r--r-- 1 root admin 191 Dec 23 2004 lua.hpp
-rw-r--r-- 1 root admin 1026 Dec 27 2007 lualib.h
-rw-r--r-- 1 root admin 5777 Dec 27 2007 lauxlib.h
...
drwxr-xr-x 6 root admin 204 Jul 12 17:27 libmodplug
drwxr-xr-x 3 root admin 102 Jul 12 17:32 libswscale
drwxr-xr-x 3 root admin 102 Jul 12 17:32 libswresample
drwxr-xr-x 3 root admin 102 Jul 12 17:32 libpostproc
drwxr-xr-x 41 root admin 1394 Jul 12 17:32 libavutil
drwxr-xr-x 5 root admin 170 Jul 12 17:32 libavformat
drwxr-xr-x 8 root admin 272 Jul 12 17:32 libavfilter
drwxr-xr-x 3 root admin 102 Jul 12 17:32 libavdevice
drwxr-xr-x 10 root admin 340 Jul 12 17:32 libavcodec
# get CImg and copy CImg.h into your pHash dir
$ cd ..
$ wget http://downloads.sourceforge.net/project/cimg/CImg-1.5.0.zip
$ unzip CImg-1.5.0.zip
$ cp CImg-1.5.0/CImg.h pHash-0.9.4/
$ cd pHash-0.9.4
# copy the JNI headers from your Java SDK into your pHash dir - for 1.7.0 they're here:
$ cp /Library/Java//JavaVirtualMachines/1.7.0.jdk/Contents/Home/include/jni.h ./
$ cp /Library/Java//JavaVirtualMachines/1.7.0.jdk/Contents/Home/include/darwin/jni_md.h ./
# install libsndfile, libsamplerate and mpg123 if not installed already
$ sudo port install libsndfile
$ sudo port install libsamplerate
$ sudo port install mpg123
# now run configure, with Java enabled as you likely want those cool bindings, and expect the missing libavcodec error:
$ ./configure --enable-java
OR this which would make more sense:
$ ./configure --enable-java CPPFLAGS="-I/opt/local/include" LDFLAGS="-L/opt/local/lib"
but configure completely ignores the new include/lib paths stated :( Seemingly as they're hardcoded inside configure.
...
checking CImg.h usability... no
checking CImg.h presence... no
checking for CImg.h... no
checking whether CImg.h is in the current or src directory.... yes
*** Configuring video Hash ***
checking whether FFmpeg is present... checking for avcodec_alloc_frame in -lavcodec... no
configure: error:
*** libavcodec not found.
So then since configure expects all the libs and includes to be in /usr/local/ (not /opt/local) and I cant't get it to look elsewhere, the only thing left to do is brute-force it ! :D
# edit ./configure as follows
$ nano configure
CTRL-W -> search for ' -L/' (note the space)
# edit the lines as follows
LDFLAGS="$LDFLAGS -L/usr/local/lib -L/opt/local/lib"
CPPFLAGS="$CPPFLAGS -I/usr/local/include -I/opt/local/include"
# Or do the newbie version (I actually did this the first time!)
$ sudo mv /usr/local/lib /usr/local/lib-foo
$ sudo mv /usr/local/include/ /usr/local/include-foo
$ sudo ln -s /opt/local/lib /usr/local/lib
$ sudo ln -s /opt/local/include /usr/local/include
$ ll /usr/local/
total 16
drwxr-xr-x 32 root wheel 1088 Jun 29 18:04 bin
drwxr-xr-x 3 root wheel 102 Mar 6 14:40 etc
lrwxr-xr-x 1 root wheel 18 Jul 12 19:27 include -> /opt/local/include
drwxr-xr-x 11 root wheel 374 Jul 12 19:22 include-foo
lrwxr-xr-x 1 root wheel 14 Jul 12 19:27 lib -> /opt/local/lib
drwxr-xr-x 25 root wheel 850 Jul 12 19:23 lib-foo
drwxr-xr-x 8 root wheel 272 Oct 11 2010 sbin
drwxr-xr-x 4 root wheel 136 Jun 12 11:52 share
# at this point ./configure should work ok
Time to run make - you'll get a bunch of errors:
$ make
# on to the code bits:
# we need to adjust src/cimgffmpeg.cpp to support the latest version of ffmpeg
# a few things have moved from being deprecated to having been completely changed:
$ make 2>&1 | grep error
cimgffmpeg.cpp:57: error: 'av_open_input_file' was not declared in this scope
cimgffmpeg.cpp:70: error: 'CODEC_TYPE_VIDEO' was not declared in this scope
cimgffmpeg.cpp:134: error: 'avcodec_decode_video' was not declared in this scope
cimgffmpeg.cpp:202: error: 'av_open_input_file' was not declared in this scope
cimgffmpeg.cpp:216: error: 'CODEC_TYPE_VIDEO' was not declared in this scope
cimgffmpeg.cpp:283: error: 'avcodec_decode_video' was not declared in this scope
cimgffmpeg.cpp:339: error: 'av_open_input_file' was not declared in this scope
cimgffmpeg.cpp:357: error: 'av_open_input_file' was not declared in this scope
cimgffmpeg.cpp:368: error: 'CODEC_TYPE_VIDEO' was not declared in this scope
cimgffmpeg.cpp:399: error: 'av_open_input_file' was not declared in this scope
cimgffmpeg.cpp:410: error: 'CODEC_TYPE_VIDEO' was not declared in this scope
# change as follows; left: original downloaded source, right: modified source
$ diff ~/Downloads/pHash-0.9.4-fresh/src/cimgffmpeg.cpp ~/dev/pHash-0.9.4/src/cimgffmpeg.cpp
57c57
< if(av_open_input_file(&st_info->pFormatCtx, st_info->filename, NULL, 0, NULL)!=0)
---
> if(avformat_open_input(&st_info->pFormatCtx, st_info->filename, NULL, NULL)!=0)
70c70
< if(st_info->pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
---
> if(st_info->pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
134c134
< avcodec_decode_video(st_info->pCodecCtx, pFrame, &frameFinished,packet.data, packet.size);
---
> avcodec_decode_video2(st_info->pCodecCtx, pFrame, &frameFinished, &packet);
202c202
< if(av_open_input_file(&(st_info->pFormatCtx),st_info->filename,NULL,0,NULL)!=0){
---
> if(avformat_open_input(&(st_info->pFormatCtx),st_info->filename,NULL,NULL)!=0){
216c216
< if(st_info->pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
---
> if(st_info->pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
282,283c282
< avcodec_decode_video(st_info->pCodecCtx, pFrame, &frameFinished,
< packet.data,packet.size);
---
> avcodec_decode_video2(st_info->pCodecCtx, pFrame, &frameFinished, &packet);
339c338
< if (av_open_input_file(&pFormatCtx, file, NULL, 0, NULL))
---
> if (avformat_open_input(&pFormatCtx, file, NULL, NULL))
357c356
< if (av_open_input_file(&pFormatCtx, file, NULL, 0, NULL))
---
> if (avformat_open_input(&pFormatCtx, file, NULL, NULL))
368c367
< if(pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
---
> if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
399c398
< if (av_open_input_file(&pFormatCtx, filename, NULL, 0, NULL))
---
> if (avformat_open_input(&pFormatCtx, filename, NULL, NULL))
410c409
< if(pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
---
> if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
That was tons of fun I'm sure, no worries we're almost there.
# make should now complete with only useless warnings
$ make
$ sudo make -n install
# if all went well you've not got pHash with Java bindings
# let's build the Java files and test it
$ cd ll bindings/java/org/phash/
$ javac *.java
# go back to the Java bindins root and run
$ cd ../..
# oh yeah.. if you actually DID rename the include/lib dirs previously then:
$ sudo rm /usr/local/lib
$ sudo rm /usr/local/include
$ sudo mv /usr/local/include-foo/ /usr/local/include
$ sudo mv /usr/local/lib-foo/ /usr/local/lib
# drum roll..
$ java -Djava.library.path=/usr/local/lib org/phash/pHash -mh ~/Downloads/s01.jpg ~/Downloads/s02.jpg
File 1: /Users/xxx/Downloads/s01.jpg
File 2: /Users/xxx/Downloads/s02.jpg
0.3159722222222222
# now go try out your image recognition app ideas ;)