[cfe-dev] Installing libc++

[Jon Kalb]

On 4/24/11 10:24 AM, "Howard Hinnant" <hhinnant at apple.com> wrote:

> On Apr 24, 2011, at 1:20 PM, Jean-Daniel Dupas wrote:
> 
>> 
>> Le 24 avr. 2011 à 18:01, Howard Hinnant a écrit :
>> 
>>> On Apr 24, 2011, at 11:51 AM, Jon Kalb wrote:
>>> 
>>>> 
>>>> Thanks Howard, you guessed right.
>>>> 
>>>> This is my testit result (summary):
>>>> 
>>>> ****************************************************
>>>> Results for /Users/jonkalb/Documents/development/developement/libcxx/test:
>>>> using Apple clang version 2.0 (tags/Apple/clang-138) (based on LLVM 2.9svn)
>>>> Target: x86_64-apple-darwin10
>>>> Thread model: posix
>>>> with -std=c++0x -stdlib=libc++
>>>> ----------------------------------------------------
>>>> sections without tests   : 1
>>>> sections with failures   : 153
>>>> sections without failures: 910
>>>>                     +   ----
>>>> total number of sections : 1064
>>>> ----------------------------------------------------
>>>> number of tests failed   : 1221
>>>> number of tests passed   : 3019
>>>>                     +   ----
>>>> total number of tests    : 4240
>>>> ****************************************************
>>>> 
>>>> Is this what I should expect?
>>> 
>>> I would've expected significantly fewer test failures for clang -std=c++0x
>>> -stdlib=libc++:
>>> 
>>> ****************************************************
>>> Results for /test:
>>> using Apple clang version 2.0 (trunk 125236) (based on LLVM 2.9svn)
>>> Target: x86_64-apple-darwin10
>>> Thread model: posix
>>> with -std=c++0x -stdlib=libc++ -arch x86_64 -U__STRICT_ANSI__ -I../include
>>> /usr/lib/libc++.dylib
>>> ----------------------------------------------------
>>> sections without tests   : 1
>>> sections with failures   : 74
>>> sections without failures: 989
>>>                      +   ----
>>> total number of sections : 1064
>>> ----------------------------------------------------
>>> number of tests failed   : 215
>>> number of tests passed   : 4023
>>>                      +   ----
>>> total number of tests    : 4238
>>> ****************************************************
>>> 
>> 
>> Is it on purpose that the testit script didn't include the -U__STRICT_ANSI__
>> flags (this flag was added to buildit to workaround some issue in darwin
>> headers).
>> Adding this flag will lower the count of failed tests.
>> 
>> FWIW, I got this with a fresh build.
>> 
>> using clang version 3.0 (trunk 130088)
>> Target: x86_64-apple-darwin10.7.3
>> Thread model: posix
>> with -std=c++0x -U__STRICT_ANSI__ -stdlib=libc++
>> ----------------------------------------------------
>> sections without tests   : 1
>> sections with failures   : 76
>> sections without failures: 987
>>                       +   ----
>> total number of sections : 1064
>> ----------------------------------------------------
>> number of tests failed   : 217
>> number of tests passed   : 4023
>>                       +   ----
>> total number of tests    : 4240
>> 
> 
> Ah, yes good point.  Yes it is on purpose that the test script doesn't
> automatically include this flag.  I keep "scripts" around so that I can easily
> try different options:
> 
> export OPTIONS="-stdlib=libc++ -arch i386"
> export OPTIONS="-stdlib=libc++ -arch x86_64"
> export OPTIONS="-std=c++0x -stdlib=libc++ -arch i386 -U__STRICT_ANSI__"
> export OPTIONS="-std=c++0x -stdlib=libc++ -arch x86_64 -U__STRICT_ANSI__"
> 
> The need for -U__STRICT_ANSI__ should be considered a temporary workaround.  I
> had forgotten about needing it, thanks for the reminder.  I'll bet that is
> what Jon is seeing.
> 
> Howard

I tried it with:

    export OPTIONS="-std=c++0x -stdlib=libc++ -U__STRICT_ANSI__"

(I didn't know what architecture to specify.)

And my results are much closer to yours.

****************************************************
Results for /Users/jonkalb/Documents/development/developement/libcxx/test:
using clang version 3.0 (trunk 130081)
Target: x86_64-apple-darwin10.7.3
Thread model: posix
with -std=c++0x -stdlib=libc++ -U__STRICT_ANSI__
----------------------------------------------------
sections without tests   : 1
sections with failures   : 93
sections without failures: 970
                       +   ----
total number of sections : 1064
----------------------------------------------------
number of tests failed   : 234
number of tests passed   : 4006
                       +   ----
total number of tests    : 4240
****************************************************

So now I'm starting to play.

Btw, I found Howard's talk on this library to be a lot of fun.

    http://devimages.apple.com/llvm/videos/LibC++.mov

Jon