Add jpeg recipe with custom CMake file.

recipes/jpeg/CMakeLists.txt.patch

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+--- CMakeLists.txt	1970-01-01 10:00:00.000000000 +1000
++++ CMakeLists.txt	2016-04-15 14:26:56.952441300 +1000
+@@ -0,0 +1,45 @@
++# Helper cmake for Windows
++# the default libjpeg build for Windows (see makefile.vc)
++# only builds a static library. Because the jpeg functions 
++# aren't marked with __declspec(export) it is easiest
++# to use cmake and set the WINDOWS_EXPORT_ALL_SYMBOLS property
++# to create a DLL with all symbols exported and a implib (.lib)
++# that can be linked against.
++
++cmake_minimum_required (VERSION 3.4)
++project (JPEG)
++
++set(JPEG_SRC jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c 
++        jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c 
++        jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c 
++        jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c 
++        jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c 
++        jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c 
++        jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c 
++        jquant2.c jutils.c jmemmgr.c jmemansi.c)
++add_library (libjpeg SHARED ${JPEG_SRC})
++        
++target_include_directories (libjpeg PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
++set_target_properties(libjpeg PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
++add_definitions(-D_CRT_SECURE_NO_WARNINGS)
++
++add_executable (cjpeg cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c rdswitch.c cdjpeg.c)
++target_link_libraries (cjpeg libjpeg)
++add_executable (djpeg djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c rdcolmap.c cdjpeg.c)
++target_link_libraries (djpeg libjpeg)
++add_executable (jpegtran jpegtran.c rdswitch.c cdjpeg.c transupp.c)
++target_link_libraries (jpegtran libjpeg)
++add_executable (rdjpgcom rdjpgcom.c)
++target_link_libraries (rdjpgcom libjpeg)
++add_executable (wrjpgcom wrjpgcom.c)
++target_link_libraries (wrjpgcom libjpeg)
++
++add_library(jpeg STATIC ${JPEG_SRC})
++
++install(TARGETS libjpeg cjpeg djpeg jpegtran rdjpgcom wrjpgcom jpeg
++  RUNTIME DESTINATION bin
++  LIBRARY DESTINATION lib
++  ARCHIVE DESTINATION lib)
++  
++install(FILES jpeglib.h jconfig.h jmorecfg.h jerror.h jpegint.h DESTINATION include)  
++  

recipes/jpeg/bld.bat

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+REM Configure step
+copy jconfig.vc jconfig.h
+if errorlevel 1 exit 1
+
+REM Build step
+cmake -G "NMake Makefiles" -D CMAKE_INSTALL_PREFIX=%LIBRARY_PREFIX% -D CMAKE_BUILD_TYPE=Release .
+if errorlevel 1 exit 1
+
+nmake
+if errorlevel 1 exit 1
+
+REM Install step
+nmake install
+if errorlevel 1 exit 1

recipes/jpeg/build.sh

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+#!/bin/bash
+
+./configure --prefix=$PREFIX \
+    --enable-shared=yes \
+    --enable-static=yes
+make
+make check
+make install

recipes/jpeg/licence.txt

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+The authors make NO WARRANTY or representation, either express or implied,
+with respect to this software, its quality, accuracy, merchantability, or
+fitness for a particular purpose.  This software is provided "AS IS", and you,
+its user, assume the entire risk as to its quality and accuracy.
+
+This software is copyright (C) 1991-2016, Thomas G. Lane, Guido Vollbeding.
+All Rights Reserved except as specified below.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+software (or portions thereof) for any purpose, without fee, subject to these
+conditions:
+(1) If any part of the source code for this software is distributed, then this
+README file must be included, with this copyright and no-warranty notice
+unaltered; and any additions, deletions, or changes to the original files
+must be clearly indicated in accompanying documentation.
+(2) If only executable code is distributed, then the accompanying
+documentation must state that "this software is based in part on the work of
+the Independent JPEG Group".
+(3) Permission for use of this software is granted only if the user accepts
+full responsibility for any undesirable consequences; the authors accept
+NO LIABILITY for damages of any kind.
+
+These conditions apply to any software derived from or based on the IJG code,
+not just to the unmodified library.  If you use our work, you ought to
+acknowledge us.
+
+Permission is NOT granted for the use of any IJG author's name or company name
+in advertising or publicity relating to this software or products derived from
+it.  This software may be referred to only as "the Independent JPEG Group's
+software".
+
+We specifically permit and encourage the use of this software as the basis of
+commercial products, provided that all warranty or liability claims are
+assumed by the product vendor.
+
+
+The Unix configuration script "configure" was produced with GNU Autoconf.
+It is copyright by the Free Software Foundation but is freely distributable.
+The same holds for its supporting scripts (config.guess, config.sub,
+ltmain.sh).  Another support script, install-sh, is copyright by X Consortium
+but is also freely distributable.
+
+The IJG distribution formerly included code to read and write GIF files.
+To avoid entanglement with the Unisys LZW patent (now expired), GIF reading
+support has been removed altogether, and the GIF writer has been simplified
+to produce "uncompressed GIFs".  This technique does not use the LZW
+algorithm; the resulting GIF files are larger than usual, but are readable
+by all standard GIF decoders.

recipes/jpeg/meta.yaml

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+{% set version = "9b" %}
+
+package:
+    name: jpeg
+    version: {{ version }}
+
+source:
+    fn: jpegsrc.v9b.tar.gz
+    url: http://www.ijg.org/files/jpegsrc.v{{ version }}.tar.gz
+    md5: 6a9996ce116ec5c52b4870dbcd6d3ddb
+    patches:
+        - CMakeLists.txt.patch  # [win]
+
+build:
+    number: 0
+    features:
+        - vc9  # [win and py27]
+        - vc10  # [win and py34]
+        - vc14  # [win and py35]
+
+requirements:
+    build:
+        - python  # [win]
+        - cmake  # [win]
+
+test:
+    requires:
+        - python {{ environ['PY_VER'] + '*' }}  # [win]
+    files:
+        - testorig.jpg
+    commands:
+        - djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
+
+about:
+    home: http://www.ijg.org/
+    license: Custom free software license
+    summary: read/write jpeg COM, EXIF, IPTC medata
+
+extra:    
+    recipe-maintainers:
+        - gillins