Add list of things to do in the future
Luis Diaz Mas
8 years ago
committed by
Luis Diaz Mas
parent
6be5278dd2
commit
ca9ef34ea0
@ -0,0 +1,120 @@
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2017-08-17
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Puzzle with autotools/--with-adobe (solved: seems to confined to my Mac Book Pro).
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-----------------------------------------------------------------------------------
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The --with-adobe code is new (added on Monday/Tuesday 2017-08-15).
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It's very much "Work in Progress" and will get lots more polishing.
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This builds and links on Mac and Linux (Cygwin isn't ready yet).
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Autotools isn't used with Visual Studio
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Default build (which compile/links xmpsdk/src) is fine (and passes test suite)
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$ sudo make distclean ; make config ; ./configure ; make ; sudo make install ; make samples ; make tests
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To build with the external Adobe SDK:
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$ sudo make distclean ; make config ; ./configure --with-adobe ; make
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Linux --with-adobe is working when I remove calls to DeleteNamespace in src/xmp.cpp.
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The test suite is mostly OK. Some XMP output format has changed.
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There are some test crashes to be investigated.
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So, this issue only concerns linking on the Mac.
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The following command works:
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$ bin/exiv2 http://clanmills.com/Stonehenge.jpg is working
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The following command crashes when it attempts to execute XMPsdk code
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$ bin/exiv2 --verbose --version
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........
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config_path=/Users/rmills/.exiv2
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uid=501
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euid=501
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gid=20
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dyld: lazy symbol binding failed: Symbol not found: _WXMPMeta_Initialize_1
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Referenced from: /Users/rmills/gnu/github/exiv2/src/.libs/libexiv2.26.dylib
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Expected in: flat namespace
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dyld: Symbol not found: _WXMPMeta_Initialize_1
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Referenced from: /Users/rmills/gnu/github/exiv2/src/.libs/libexiv2.26.dylib
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Expected in: flat namespace
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Abort trap: 6
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$
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This is correct. libXMPCore.a is not in the mix.
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ls -alt src/.libs/libexiv2.26.dylib
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-rwxr-xr-x+ 1 rmills staff 2238124 Aug 17 11:07 src/.libs/libexiv2.26.dylib
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-------
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Edit src/Makefile#242 and change:
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@$(LIBTOOL) --mode=link $(LINK.cc) -o ../bin/$@ $(LIBRARY) $(EXIV2OBJ) $(EXIV2COBJ) -rpath $(libdir)
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to:
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@$(LIBTOOL) --mode=link $(LINK.cc) -lXMPCore -o ../bin/$@ $(LIBRARY) $(EXIV2OBJ) $(EXIV2COBJ) -rpath $(libdir)
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$ touch src/version.cpp src/exiv2.cpp ; make
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$ ls -alt src/.libs/libexiv2.26.dylib
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-rwxr-xr-x+ 1 rmills staff 4312308 Aug 17 11:17 src/.libs/libexiv2.26.dylib
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-------
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$ bin/exiv2
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dyld: Symbol not found: __ZNSiD0Ev
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Referenced from: /Users/rmills/gnu/github/exiv2/src/.libs/libexiv2.26.dylib
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Expected in: flat namespace
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in /Users/rmills/gnu/github/exiv2/src/.libs/libexiv2.26.dylib
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Abort trap: 6
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605 rmills@rmillsmbp:~/gnu/github/exiv2 $
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$ c++filt _ZNSiD0Ev
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std::basic_istream<char, std::char_traits<char> >::~basic_istream()
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It appears that libexiv2.26.dylib isn't linked to the STL libraries.
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However I think problem may be with the "flat namespace" which tells the
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dynamic linker to search for library names. The search order is:
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$ otool -L bin/.libs/exiv2
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bin/.libs/exiv2:
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/usr/local/lib/libexiv2.26.dylib (compatibility version 26.0.0, current version 26.0.0)
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/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.60.2)
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/usr/local/lib/libintl.8.dylib (compatibility version 10.0.0, current version 10.2.0)
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/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
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/usr/local/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)
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/usr/local/lib/libexpat.1.dylib (compatibility version 8.0.0, current version 8.0.0)
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/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 307.5.0)
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So, when he's loading libexiv2.26.dylib, he needs a symbol from libc++.1.dylib
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Amazingly, I got it to work on Wednesday morning.
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I must have been confused. Something was working!
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Notes (mostly to remind of painful discoveries)
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-----------------------------------------------
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How does the build get generated?
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$ make config
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This generates ./configure by reading config/configure.ac
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When you use --with-adobe, CXXFLAGS and LDFLAGS are modified and ENABLE_XMP is set to 2016.
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Makefile has code to execute the script xmpsdk/buildXMPsdk.sh which
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downloads and builds the XMPsdk to create libCore.a (which we need) and libFiles.a
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config/config.mk.in is converted into config/config.mk and included in xmpsdk/src/Makefile
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This is really ugly. config.mk also messes with CPPFLAGS and LDFLAGS
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To get -lXMPCore into the mix, set XMPSDK_LIBS in config/config.mk.in
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XMPSDK_LIBS = -lXMPCore
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508 rmills@rmillsmbp:~/gnu/github/exiv2 $ finder Makefile | xargs grep -H config.mk | grep include
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./contrib/organize/Makefile:include $(top_srcdir)/config/config.mk
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./doc/Makefile:include $(top_srcdir)/config/config.mk
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./samples/Makefile:include $(top_srcdir)/config/config.mk
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./src/Makefile:include $(top_srcdir)/config/config.mk
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./xmpsdk/src/Makefile:include $(top_srcdir)/config/config.mk
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509 rmills@rmillsmbp:~/gnu/github/exiv2 $
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Features to Add to the CMake code
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-----------------------------------------------------------------------------------
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* Auto usage of ccache on Linux and Mac.
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* Remove the trick to compile the documentation using the configure script. Native documentation generation on CMake.
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