Remove --enable-cpp-exceptions configure option

RESOLVED FIXED in mozilla10



Build Config
7 years ago
6 years ago


(Reporter: Halton Huo, Assigned: emorley)


Bug Flags:
in-testsuite -

Firefox Tracking Flags

(Not tracked)



(1 attachment, 4 obsolete attachments)



7 years ago
User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100723 Ubuntu/10.04 (lucid) Firefox/3.6.8
Build Identifier: 

On my Ubuntu 10.04, Trunk (f203095c85de) build fails when you have the following line in your mozconfig file:

 ac_add_options --enable-cpp-exceptions

c++ -o nsDependentString.o -c -I../../../dist/stl_wrappers -I../../../dist/system_wrappers -include /home/halton/work/projects/mozilla/mozilla-central/config/gcc_hidden.h -DMOZILLA_INTERNAL_API -DOSTYPE=\"Linux2.6\" -DOSARCH=Linux -D_IMPL_NS_COM  -I/home/halton/work/projects/mozilla/mozilla-central/xpcom/string/src -I. -I../../../dist/include -I../../../dist/include/nsprpub  -I/home/halton/work/projects/mozilla/qtdebug/dist/include/nspr -I/home/halton/work/projects/mozilla/qtdebug/dist/include/nss       -fPIC  -frtti -fexceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type -pedantic -Wno-long-long -fno-strict-aliasing -fshort-wchar -pthread -pipe  -DDEBUG -D_DEBUG -DTRACING -g   -DMOZILLA_CLIENT -include ../../../mozilla-config.h -MD -MF .deps/nsDependentString.pp /home/halton/work/projects/mozilla/mozilla-central/xpcom/string/src/nsDependentString.cpp
In file included from ../../../dist/include/mozilla/mozalloc.h:51,
                 from ../../../dist/include/nscore.h:50,
                 from ../../../dist/include/nsStringFwd.h:45,
                 from ../../../dist/include/nsAString.h:43,
                 from ../../../dist/include/nsSubstring.h:40,
                 from ../../../dist/include/nsString.h:44,
                 from ../../../dist/include/nsDependentString.h:43,
                 from /home/halton/work/projects/mozilla/mozilla-central/xpcom/string/src/nsDependentString.cpp:40:
../../../dist/stl_wrappers/new:45:4: error: #error "STL code can only be used with -fno-exceptions"
make[1]: *** [nsDependentString.o] Error 1
make[1]: Leaving directory `/home/halton/work/projects/mozilla/qtdebug/xpcom/string/src'

My configure script is 

Adding configure options from /home/halton/work/projects/mozilla/mozilla-central/mozconfig:

Reproducible: Always
Benjamin, is this even a supported build option nowadays?  I would think that if it is the #error should be compiled out when this option is used.
I don't think we have any plans to actually make Mozilla work with C++ exceptions anytime soon, so we should just remove this broken option.
Component: XPCOM → Build Config
Ever confirmed: true
QA Contact: xpcom → build-config
Summary: Trunk builds fail when using --enable-cpp-exceptions → Remove --enable-cpp-exceptions configure option
We should remove the RTTI option while we're at it.
Summary: Remove --enable-cpp-exceptions configure option → Remove --enable-cpp-exceptions and --enable-cpp-rtti configure options
Created attachment 473380 [details] [diff] [review]
Patch v1.0

This patch removes the --enable-cpp-exceptions and --enable-cpp-rtti configure options.
Assignee: nobody → mitchell.field
Attachment #473380 - Flags: review?(ted.mielczarek)
OS: Linux → All
Hardware: x86 → All
Wait. The rtti option comes in handy every time we need to figure out which timer callbacks are keeping our threads awake, like in bug 565217.
Please keep the RTTI option.
Comment on attachment 473380 [details] [diff] [review]
Patch v1.0

r- per bsmedberg. I didn't know that cpp-rtti was still useful.
Attachment #473380 - Flags: review?(ted.mielczarek) → review-
Created attachment 473542 [details] [diff] [review]
Patch v1.1

This removes --enable-cpp-exceptions.
Attachment #473380 - Attachment is obsolete: true
Attachment #473542 - Flags: review?(ted.mielczarek)
Summary: Remove --enable-cpp-exceptions and --enable-cpp-rtti configure options → Remove --enable-cpp-exceptions configure option
Attachment #473542 - Flags: review?(ted.mielczarek) → review+
Created attachment 473564 [details] [diff] [review]
Patch v1.2

Sorry, that last patch was incomplete. I left out the mozalloc.h changes.
Attachment #473542 - Attachment is obsolete: true
Attachment #473564 - Flags: review?(ted.mielczarek)
Attachment #473564 - Flags: review?(ted.mielczarek) → review+
Attachment #473564 - Flags: approval2.0?
Let's wait until after branch, just to keep the tree clear for more important stuff.
Attachment #473564 - Flags: approval2.0? → approval2.0-
Just came across this bug and I think we are now far enough after the branch ;)

Comment 12

6 years ago
Created attachment 566499 [details] [diff] [review]
Patch v1.2 rebased

As last patch but updated to tip. Couple of hunks less now, since the Irix sections in configure have been removed by bug 680792.
Attachment #473564 - Attachment is obsolete: true

Comment 13

6 years ago
Comment on attachment 566499 [details] [diff] [review]
Patch v1.2 rebased

Ted, this has received r+ a year ago, but just wanted to:
- Confirm this is still wanted
- Ask what you wanted done about the |AC_DEFINE(CPP_THROW_NEW, [throw()])| (here:, now that has landed since.

Builds fine locally using MSVC2010, but will obviously send to try too before pushing.
Attachment #566499 - Flags: review?(ted.mielczarek)

Comment 14

6 years ago
Taking bug, just so this shows up on my searches. Mitch, hope that's ok :-) If you'd rather take over, that's fine. Patch author will be left as you obviously either way.
Assignee: mitchell.field → bmo
Flags: in-testsuite-
Attachment #566499 - Flags: review?(ted.mielczarek) → review+

Comment 15

6 years ago
Created attachment 568663 [details] [diff] [review]
Patch v1.3

Updated to tip + mozalloc.h changes omitted since they've landed in bug 695171 since.
Attachment #566499 - Attachment is obsolete: true

Comment 16

6 years ago
Target Milestone: --- → mozilla10
Version: unspecified → Trunk

Comment 17

6 years ago
Last Resolved: 6 years ago
Resolution: --- → FIXED


6 years ago
Blocks: 724700
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