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As wished by Norman Vine, I used the ML way to ask community about a problem in building the gdal library in a cygwin context. And I follow its concil : It's better to keep somes problems related documents (and their fix is they exist) archived on a ML in the goal to share the informations for future.
Me too, I use the ML to help me in the gdal building : http://www.cygwin.com/ml/cygwin-apps/2004-10/msg00072.html http://www.cygwin.com/ml/cygwin-apps/2004-10/msg00183.html http://www.cygwin.com/ml/cygwin/2004-10/msg01134.html http://www.cygwin.com/ml/cygwin-apps/2004-10/msg00186.html .. and all messages in the corresponding threads.
FYI, all wished to build libraries are in /usr/local/src . So the prefix is /usr/local
I builed the proj library without any problem. Now, I wish to build the gdal library but I'm encountering some problems about the gcc linker. I tried a lot of build stages with many changes like : (not particular sort) - removed some formats in GDALmake.opt.in - made a .so link : /usr/lib/libpng12.so -> /usr/lib/libpng12.dll.a - libtoolize -f ; autoreconf -f -i -s - made a link in gdal src library (libtool -> /usr/bin/libtool ) - changed need_relink from yes to no in ltmain.sh
*** Warning: linker path does not have real file for library -lgeotiff. *** I have the capability to make that library automatically link in when *** you link to this library. But I can only do this if you have a *** shared version of the library, which you do not appear to have *** because I did check the linker path looking for a file starting *** with libgeotiff and none of the candidates passed a file format test *** using a file magic. Last file checked: /lib/libgeotiff.dll.a
*** Warning: linker path does not have real file for library -lpng. *** I have the capability to make that library automatically link in when *** you link to this library. But I can only do this if you have a *** shared version of the library, which you do not appear to have *** because I did check the linker path looking for a file starting *** with libpng and none of the candidates passed a file format test *** using a file magic. Last file checked: /usr/bin/libpng12-config
*** Warning: linker path does not have real file for library -lz. *** I have the capability to make that library automatically link in when *** you link to this library. But I can only do this if you have a *** shared version of the library, which you do not appear to have *** because I did check the linker path looking for a file starting *** with libz and none of the candidates passed a file format test *** using a file magic. Last file checked: /lib/libz.dll.a
*** Warning: linker path does not have real file for library -ldl. *** I have the capability to make that library automatically link in when *** you link to this library. But I can only do this if you have a *** shared version of the library, which you do not appear to have *** because I did check the linker path looking for a file starting *** with libdl and none of the candidates passed a file format test *** using a file magic. Last file checked: /lib/libdl.a *** The inter-library dependencies that have been dropped here will be *** automatically added whenever a program is linked with this library *** or is declared to -dlopen it.
*** Since this library must not contain undefined symbols, *** because either the platform does not support them or *** it was explicitly requested with -no-undefined, *** libtool will only create a static version of it. using piecewise archive linking...
I can give more if needed. Sorry for this long message.
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