A directory's 'libs' target should create symlinks in the top-level
dist/bin and dist/lib directories to the libraries (and any other
generated files) in the build tree, so that when one has changed
sources in $src/js/src, simply running 'make' in $obj/js/src and then
re-running $obj/dist/bin/firefox will pick up the new libraries.
The js/src/Makefile.in 'install' target has many double-colon rules
with commands; we'd like to use these all in two circumstances:
. For 'make install' in a stand-alone js/src build. Since we're
following GNU behavior, this should copy the files it's installing.
. For 'make libs' in an in-tree js/src build. To interact properly
with the rest of the Mozilla build system, this should create
symlinks as explained above.
To accomplish this, we use plain old $(INSTALL) in all the install
targets, have js/src/Makefile.in set NSDISTMODE to copy (to get the
GNU behavior), and then have config/js/Makefile.in override that (to
get the Mozilla in-tree behavior).
Give SpiderMonkey its own configure script and top-level Makefile.
Adjust js/src/Makefile as appropriate for life as a stand-alone
makefile, instead of a 'make export; make libs'-style Mozilla tier
makefile. Have the configure script accept '--with-nspr-cflags' and
'--with-nspr-libs' options for using an in-tree NSPR. Also accept
'--with-system-nspr', '--with-nspr-prefix', and
'--with-nspr-exec-prefix' flags for using an installed NSPR. Default
to --disable-jemalloc, assuming we don't have that part of the tree
available; have the top-level configure script pass --enable-jemalloc
as needed.
Since we no longer have an export phase to copy header files into
dist/include/js before we build the library, we need to be able to
find nanojit.h in the nanojit directory; fix references in
jsbuiltins.h and jstracer.cpp.
Give SpiderMonkey it its own copies of many of the files from ./config
and ./build. These are all exact copies, except as follows:
. js/src/config/Makefile.in: js/src only has a subset of
js/src/config, and thus a subset of the makefile targets.
. js/src/config/autoconf.mk.in: js/src/configure.in has its own make
variables to set, not set by the top-level configure script, so it
needs a custom automake.mk template.
. js/src/config/make-system-wrappers.pl: a copy from nsprpub/config,
so that we can build without having an NSPR source tree handy.
Invoke js/src/configure from ./configure, passing the values computed
for NSPR_CFLAGS and NSPR_LIBS by the top-level configure script.
Treat js/src as a static directory of the js tier, and create a new
config/js (just a Makefile) to be the js tier's non-static directory.
Let js/src/configure generate SpiderMonkey's makefiles, not
./configure.
Generate a 'js-config' script, which clients can call to find the
CFLAGS and LIBS values necessary to compile and link against an
installed SpiderMonkey library. Don't include the js-config script in
Macintosh packages.
Teach client.mk how to rebuild js/src/configure.
Tell Mercurial to ignore files generated by autoconf in js/src.
Further work:
. Right now, callers must define JS_THREADSAFE when #including jsapi.h.
This is fixed in a subsequent patch.
. js/src/configure is a trimmed copy of ./configure. It could be
trimmed more.
