- AC_HAVE_FUNCS is an alias to AC_CHECK_FUNCS, so it is covered.
- Nothing uses HAVE___CXA_DEMANGLE, so we don't explictly set it,
  although we do need the result of whether __cxa_demangle is supported.
- No moz.build uses MOZ_DEMANGLE_SYMBOLS, so we only `set_define` it.
- We leave dladdr in old-configure because it needs to move along other
  dl* things.
- The hotfix for AC_CHECK_FUNC is however not needed for dladdr, so we
  remove it.
- We replace the forced HAVE_LOCALECONV on Windows with a check shared
  with all platforms.

Differential Revision: https://phabricator.services.mozilla.com/D134858

- AC_HAVE_FUNCS is an alias to AC_CHECK_FUNCS, so it is covered.
- Nothing uses HAVE___CXA_DEMANGLE, so we don't explictly set it,
  although we do need the result of whether __cxa_demangle is supported.
- No moz.build uses MOZ_DEMANGLE_SYMBOLS, so we only `set_define` it.
- We leave dladdr in old-configure because it needs to move along other
  dl* things.
- The hotfix for AC_CHECK_FUNC is however not needed for dladdr, so we
  remove it.
- We replace the forced HAVE_LOCALECONV on Windows with a check shared
  with all platforms.

Differential Revision: https://phabricator.services.mozilla.com/D134858

Differential Revision: https://phabricator.services.mozilla.com/D134743

Version of NSS >= 3.27 have a pkg-config file. We're now requiring 3.53,
so while moving, just use pkg-config, which is simpler.

The old-configure check that rejected some untested platforms for
in-tree NSS is actually rejecting none: the accepted platforms cover all
the supported ones, so we remove that check.

And because building with system NSS without system NSPR doesn't make
sense, imply the latter when the former is used.

Differential Revision: https://phabricator.services.mozilla.com/D77428

Bug 1635764 - Move --with-system-icu and --with-intl-api to python configure. r=firefox-build-system-reviewers,rstewart

At the same time, because it's now simpler to do so, set the right data
file name for big-endians, even though we don't have or produce it
(bug #1264836). Also remove USE_ICU, which is redundant with
JS_HAS_INTL_API, and actively break the build at configure time when
using --without-intl-api with Firefox because this hasn't actually
worked for close to 3 years (since bug 1402048).

Differential Revision: https://phabricator.services.mozilla.com/D77416

Bug 1641775 - Move --with-system-nspr to python configure. r=firefox-build-system-reviewers,rstewart

Versions of NSPR >= 4.10 come with a pkg-config file. We currently
depend on 4.9.2 for spidermonkey, but much more recent versions for
Firefox. 4.10 is less than a year newer than 4.9.2, and 4.10 is 7 years
old, so bumping the requirement to 4.10 is not really a big deal.

With the use of pkg-config, --with-nspr-cflags and --with-nspr-libs are
not needed.

None of the AC_TRY_COMPILE tests were any useful because
PR_STATIC_ASSERT and PR_UINT64 have been when we look for them since
4.8.6 and 4.9 respectively.

Differential Revision: https://phabricator.services.mozilla.com/D77412

As all versions of zlib >= 1.2.3.1 have a pkg-config file, and 1.2.3.1
is close to 14 years old, let's drop 1.2.3 and just use pkg-config, which
simplifies what we need to do dramatically.

Differential Revision: https://phabricator.services.mozilla.com/D77404

iOS support for Gecko has not been tested in years and is most probably
out of date. The build system part of it, specifically the checks in
build/autoconf/ios.m4, are not trivial to port to python configure, and
they prevent other things from moving to python configure (because some
of them change value when MOZ_IOS is set).

The code is left alone, although it could probably be stripped off as
well, but I'll leave that as an exercise for someone else.

Differential Revision: https://phabricator.services.mozilla.com/D75463

We've been relying on frame pointers being indirectly enabled via things
like --enable-profiling for some time, but this doesn't scale because
some things may want frame pointers while wanting --disable-profiling.

So we move MOZ_FRAMEPTR_FLAGS to python configure and add a new option
to decide whether to enable frame pointers or not.

Differential Revision: https://phabricator.services.mozilla.com/D34117

--HG--
extra : moz-landing-system : lando

Because we only ever run one subconfigure, the machinery to execute
several is not useful anymore. Inlining it allows to simplify the code
too, because it doesn't need to be generic anymore. This also removes
the last remaining bits of acwinpaths.m4.

Also remove now unused support for --list in build/subconfigure.py.

Depends on D16380

Differential Revision: https://phabricator.services.mozilla.com/D16381

--HG--
extra : moz-landing-system : lando

We're always setting -dead_strip on mac builds, per
cross-mozconfig.common, we might as well not do that and revert bug
638149, which disabled adding -dead_strip with LTO: that is apparently
not a problem anymore.

Differential Revision: https://phabricator.services.mozilla.com/D14373

--HG--
extra : rebase_source : 9794320e96279cbb8b7b66db6720c959eaa6a95b

MozReview-Commit-ID: 3wobNk0HDU5

MozReview-Commit-ID: FWovXD9rjed

--HG--
extra : rebase_source : 4a9693b512c51b37abd5cdafcedc21cff8b4434c

At the same time, autodetect the SDK if WINDOWSSDKDIR is not given.

--HG--
extra : rebase_source : 4ee98e2105b607bab5050127f23354e9b291a246

MozReview-Commit-ID: 9ol2nMYM0a0

--HG--
extra : rebase_source : 3f3feeac941791d081e09ebb096a3e052540a52c

At the same time, we improve things slightly by deriving HOST_CC from CC
in a smarter way, as well as CXX from CC, which we weren't doing
previously.

Many related things are not moved at the same time to keep the patch
somehow "small".

--HG--
extra : rebase_source : b837db972abeb5b2a955c4b52b7ceb6f31c74660

The PR was fixed in early 2011.  clang 3.3, the oldest version of clang
that we build with, was released in mid-2013.  It's safe to say that all
versions of clang now have this fix, and we can delete the check.

This PR was fixed in the GCC 4.7 development cycle.  Since we require
GCC 4.7 now, we no longer have to check for this bug.

MozReview-Commit-ID: CLn3PQUh4gG

MozReview-Commit-ID: KinAe8zLivJ

--HG--
extra : rebase_source : 8ce1b58222a034f2d6ec45f28aabb3a543bc84c7

bug 1172632 - Move some allocator related configure checks in a common location for both top-level and js/src to use. r=mshal

--HG--
extra : commitid : EAxgCmmuwAx
extra : rebase_source : 854a55e62573e59e042a326d62450fa3fbf2db18

The fix is included in GCC 4.4, which is our minimum supported version.

Also, avoid removing --with-ccache from all subconfigure calls. Only remove it
from NSPR's.

Backed out changeset 9d86b9442f0b (bug 975011) for Windows debug test bustage that only appears on clobber builds.
CLOSED TREE

--HG--
extra : rebase_source : 740fc0d5cd27b0cc7d06ce9f9c2f848c9d071b20

--HG--
extra : rebase_source : 92960a00e4d89eb9f2af4247c1434f31e27392a0

Bug 968561 - Move ffi detection from configure.in and js/src/configure.in into build/autoconf/ffi.m4. r=gps

Bug 967556 - Divert AC_CHECK_FUNC so that the #includes it uses can't interfere with the function it tests. r=gps