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Diffstat (limited to 'libz/README-DEV')
| -rw-r--r-- | libz/README-DEV | 29 |
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diff --git a/libz/README-DEV b/libz/README-DEV new file mode 100644 index 0000000..42a8ae1 --- /dev/null +++ b/libz/README-DEV @@ -0,0 +1,29 @@ +This document describes how libz was packaged for build2. In particular, this +understanding will be useful when upgrading to a new upstream version. See +../README-DEV for general notes on zlib packaging. + +Symlink the required upstream files into libz/: + +$ cd libz && + ln -s ../../upstream/*.{c,h,map} ../../upstream/win32/*.def ./ && + rm zconf.h zlib.h + +The upstream's (hand written) configure script pre-processes zconf.h.in and +replaces '#ifdef HAVE_UNISTD_H' and '#ifdef HAVE_STDARG_H' with '#if 1' on +POSIX. We replace these constructs in zconf.h.in with '#if @HAVE_...@' and use +the in module to generate zconf.h. We also edit zlib.h to include zconf.h +using angle brackets rather that quotes for the headers auto-generating +machinery to work properly. + +$ cp ../../upstream/{zconf.h.in,zlib.h} ./ +$ touch zconf.h +$ patch -p0 <zconf.h.in.patch +$ patch -p0 <zlib.h.patch + +Note that there is no LICENSE/COPYING file in the upstream project as the +copyright notice is provided at the end of its README file. We extract it into +a separate (installable) LICENSE file. + +Use the upstream's minigzip test for testing: + +ln -s ../../../upstream/test/minigzip.c ../tests/minigzip/ |