README
1
2Wrapping the jpeg support library for tcl is a bit more complicated
3than libz, or libpng.
4
5(1) libjpeg comes with its own configure command, and there is no
6 configure.ac. This means that it is not possible to lift the
7 relevant sections out of it for the configure of the
8 binding. Instead the binding run the configure of libjpeg
9 (AC_CONFIG_SUBDIRS) from its own configure and uses the
10 resulting header file (jconfig.h) as usual. A quirk is that
11 the tcl binding is a subdirectory of libjpeg, but to be able
12 to perform the previous operation its has to be the other way
13 around (AC_CONFIG_SUBDIRS is unable to handle '..'
14 correctly). To facility this I placed a symbolic link into the
15 directory of the binding, refering to the parent under the
16 name libjpeg.
17
18(2) A second trouble spot is described in the file 'DANGER'.
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