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Diffstat (limited to 'tkimg/libjpeg/README')
| -rwxr-xr-x | tkimg/libjpeg/README | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tkimg/libjpeg/README b/tkimg/libjpeg/README new file mode 100755 index 0000000..91d3563 --- /dev/null +++ b/tkimg/libjpeg/README @@ -0,0 +1,18 @@ +
+Wrapping the jpeg support library for tcl is a bit more complicated
+than libz, or libpng.
+
+(1) libjpeg comes with its own configure command, and there is no
+ configure.in. This means that it is not possible to lift the
+ relevant sections out of it for the configure of the
+ binding. Instead the binding run the configure of libjpeg
+ (AC_CONFIG_SUBDIRS) from its own configure and uses the
+ resulting header file (jconfig.h) as usual. A quirk is that
+ the tcl binding is a subdirectory of libjpeg, but to be able
+ to perform the previous operation its has to be the other way
+ around (AC_CONFIG_SUBDIRS is unable to handle '..'
+ correctly). To facility this I placed a symbolic link into the
+ directory of the binding, refering to the parent under the
+ name libjpeg.
+
+(2) A second trouble spot is described in the file 'DANGER'.
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