Intel recommends against the use of -Os, and using it seems to produce
incorrect code in many recent versions of Intel's compilers.
js/src/Makefile.in tries to use -Os only with G++, but it tests
INTEL_CC, not INTEL_CXX --- even though almost all the sources are
C++. Check INTEL_CXX instead.
Here's the commit that added this:
1.1764 <benjamin@smedbergs.us> 2007-01-31 08:12
No bug: checking to see which tinderboxes don't have python available.
It seems unlikely that this echo was meant to stay in the configure script.
SpiderMonkey now has its own copy of some of the files from ./config
and ./build. Since there is a decent amount of churn in that area, I
don't want it to become a burden to make merges back and forth. This
patch adds a comment explaining the 'identical if present' policy, and
runs a script to verify that it's actually being observed.
Have js/src/configure create a header file, js-config.h, that records
configure-controlled options that affect the SpiderMonkey API, like
'--enable-threadsafe'. js-config.h is namespace-clean, so it can be
installed with jsapi.h.
This means that clients can configure SpiderMonkey however they like,
and then simply #include "jsapi.h" and have everything work; they
don't have to remember to match their own compiler -D flags with those
SpiderMonkey's configure script chose. For example, mozilla-config.h
needn't concern itself with JS_THREADSAFE.
It seems to me this could also be done by having js-config --cflags
print -D options. The approach taken here seems a bit more robust: if
you can find jsapi.h at all, then you know you're getting the right
settings.
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.
--HG--
rename : build/autoconf/acoutput-fast.pl => js/src/build/autoconf/acoutput-fast.pl
rename : build/autoconf/altoptions.m4 => js/src/build/autoconf/altoptions.m4
rename : build/autoconf/config.guess => js/src/build/autoconf/config.guess
rename : build/autoconf/config.sub => js/src/build/autoconf/config.sub
rename : build/autoconf/glib.m4 => js/src/build/autoconf/glib.m4
rename : build/autoconf/install-sh => js/src/build/autoconf/install-sh
rename : build/autoconf/make-makefile => js/src/build/autoconf/make-makefile
rename : build/autoconf/match-dir.sh => js/src/build/autoconf/match-dir.sh
rename : build/autoconf/nspr.m4 => js/src/build/autoconf/nspr.m4
rename : build/autoconf/pkg.m4 => js/src/build/autoconf/pkg.m4
rename : build/autoconf/update-makefile.sh => js/src/build/autoconf/update-makefile.sh
rename : build/cygwin-wrapper => js/src/build/cygwin-wrapper
rename : build/hcc => js/src/build/hcc
rename : build/hcpp => js/src/build/hcpp
rename : build/unix/mddepend.pl => js/src/build/unix/mddepend.pl
rename : build/unix/uniq.pl => js/src/build/unix/uniq.pl
rename : config/Makefile.in => js/src/config/Makefile.in
rename : config/Moz/Milestone.pm => js/src/config/Moz/Milestone.pm
rename : config/autoconf.mk.in => js/src/config/autoconf.mk.in
rename : config/config.mk => js/src/config/config.mk
rename : config/elf-dynstr-gc.c => js/src/config/elf-dynstr-gc.c
rename : config/fastcwd.pl => js/src/config/fastcwd.pl
rename : config/gcc_hidden.h => js/src/config/gcc_hidden.h
rename : config/insure.mk => js/src/config/insure.mk
rename : nsprpub/config/make-system-wrappers.pl => js/src/config/make-system-wrappers.pl
rename : config/milestone.pl => js/src/config/milestone.pl
rename : config/milestone.txt => js/src/config/milestone.txt
rename : config/mkdepend/Makefile.in => js/src/config/mkdepend/Makefile.in
rename : config/mkdepend/cppsetup.c => js/src/config/mkdepend/cppsetup.c
rename : config/mkdepend/def.h => js/src/config/mkdepend/def.h
rename : config/mkdepend/ifparser.c => js/src/config/mkdepend/ifparser.c
rename : config/mkdepend/ifparser.h => js/src/config/mkdepend/ifparser.h
rename : config/mkdepend/imakemdep.h => js/src/config/mkdepend/imakemdep.h
rename : config/mkdepend/include.c => js/src/config/mkdepend/include.c
rename : config/mkdepend/main.c => js/src/config/mkdepend/main.c
rename : config/mkdepend/mkdepend.man => js/src/config/mkdepend/mkdepend.man
rename : config/mkdepend/parse.c => js/src/config/mkdepend/parse.c
rename : config/mkdepend/pr.c => js/src/config/mkdepend/pr.c
rename : config/nfspwd.pl => js/src/config/nfspwd.pl
rename : config/nsinstall.c => js/src/config/nsinstall.c
rename : config/nsinstall.py => js/src/config/nsinstall.py
rename : config/pathsub.c => js/src/config/pathsub.c
rename : config/pathsub.h => js/src/config/pathsub.h
rename : config/preprocessor.pl => js/src/config/preprocessor.pl
rename : config/revdepth-nt.pl => js/src/config/revdepth-nt.pl
rename : config/revdepth.pl => js/src/config/revdepth.pl
rename : config/rules.mk => js/src/config/rules.mk
rename : config/system-headers => js/src/config/system-headers
rename : config/version.mk => js/src/config/version.mk
rename : config/version_win.pl => js/src/config/version_win.pl
rename : configure.in => js/src/configure.in
This patch depends on compute-libxul-dist-in-configure.patch. The
comments there explain why we need 'fully-substituted values'.
The computation of NSPR_CFLAGS and NSPR_LIBS in the top-level
configure.in is non-trivial. To avoid duplicating all that in the
SpiderMonkey configure script, we'd like to just pass the values we've
computed down to that script as arguments. So:
. The values should contain complete filenames, and ought not contain
references to makefile variables only meaningful to the main build
machinery. In particular, they shouldn't be recursively expanded
variables that refer to LIBXUL_DIST.
. We should set NSPR_LIBS and NSPR_CFLAGS, not the temporaries _libs
and _cflags, because these values are what we want to pass down to
SpiderMonkey. A later patch in the series uses these values.
Background:
Thread-safe SpiderMonkey needs NSPR for threading support, so it uses
the values of NSPR_CFLAGS and NSPR_LIBS to compile and link. The
configure script puts values for those variables in
$(DEPTH)/config/autoconf.mk. They're recursively expanded Make
variables, and the configure script gives them values that cite the
value of LIBXUL_DIST.
LIBXUL_DIST is itself a recursively expanded variable which usually
refers to $(DIST), but refers to $(LIBXUL_SDK) if we're building
against a separate XUL tree.
Once SpiderMonkey has its own configure script, that script should
take options specifying values to use for NSPR_CFLAGS and NSPR_LIBS.
The values we pass to it shouldn't try to reference $(LIBXUL_DIST) or
any other variable from the surrounding makefiles: a stand-alone
Spidermonkey's configuration and build system shouldn't mention LIBXUL
at all. SpiderMonkey doesn't depend on LIBXUL, only NSPR, which just
happens to be installed in the same dist directory as LIBXUL.
That means we need to compute fully-substituted values for NSPR_CFLAGS
and NSPR_LIBS, suitable for stand-alone use in the top-level configure
script, which we can pass down to the SpiderMonkey configure script
(once it has one).
The first step is to actually compute an independent value for
LIBXUL_DIST, one that doesn't refer to either $(DIST) or
$(LIBXUL_SDK). This means we need to make that choice in the
configuration script, not in autoconf.mk. Subsequent patches will use
this to compute fully-substituted values for NSPR_LIBS and NSPR_CFLAGS.
