Previously the generated database/database.h was written to the build
top and exposed with -I${MAGICDIR}. Out-of-tree that placed the raw
build directory on the compiler's include search path.
Introduce ${GENINC}, the single include dir for generated headers:
* in-tree (build top == source top): ${MAGICDIR}, so the header stays
at $(builddir)/database/database.h and -I${GENINC} is exactly the old
-I${MAGICDIR} -- behaviour is unchanged.
* relocated (out-of-tree): ${MAGICDIR}/include, so the header is written
to $(builddir)/include/database/database.h and only that clean
include/ dir is on the search path; the raw build top never is.
* scripts/defs.mak.in: derive GENINC from BUILD_TOP vs MAGICSRC; add
DATABASE_H = ${GENINC}/database/database.h; CPPFLAGS uses -I${GENINC}.
* Makefile.in: the makedbh rule targets ${DATABASE_H} (mkdir its dir);
every prereq and the distclean use ${DATABASE_H}.
* database/Makefile: the fallback delegate targets ${DATABASE_H}.
Verified: relocated `make modules` builds all 33 module libraries with
the header at build/include/database/database.h and no raw build-top on
any -I line; in-tree the header stays at database/database.h and the
-I set is unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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