[debian-mysql] mysql-5.6.26 build fails "exception handling disabled"

[Bjoern Boschman]

Hi Lars,

so currently there are:
-O3 -DBIG_JOINS=1 -felide-constructors -fno-exceptions -fpermissive
-fno-rtti -fPIC -fno-strict-aliasing
I'd drop -fno-exceptions and -fno-rtti. which other would you suggest to
drop?

Cheers
B

On Tue, Sep 29, 2015 at 10:40 AM Lars Tangvald <lars.tangvald at oracle.com>
wrote:

> Upstream, this was actually changed in 5.6.4, for MySQL worklog #5825:
> http://dev.mysql.com/worklog/task/?id=5825
> Accompanying commit:
>
> https://github.com/mysql/mysql-server/commit/a5ee7278a16a6a5e6e90c56c13fdda7f6f30ebad
>
> So the flags should probably just be removed. From what I can see this
> actually applies to the other flags as well. They all seem to be outdated.
>
> The commit causing the compile error:
>
> https://github.com/mysql/mysql-server/commit/0ff896b063916e46d3ab175594f5507756c08adb
>
>
> --
> Lars
>
>
> On 09/29/2015 08:20 AM, Lars Tangvald wrote:
>
> Also note that both no-exceptions and no-rtti will cause compile errors
> with MySQL 5.7.8. I don't see much reason to keep either flag, as I assume
> they're just holdovers from optimizations of old versions?
>
> --
> Lars
>
>
> On 09/28/2015 06:25 PM, Bjoern Boschman wrote:
>
> Hi,
>
> while compiling 5.6.26 I got the following error:
>
> cd /home/jesusch/git/mysql/mysql-5.6/builddir/plugin/password_validation
> && /usr/bin/x86_64-linux-gnu-g++   -DHAVE_CONFIG_H -DMYSQL_DYNAMIC_PLUGIN
> -D_FORTIFY_SOURCE=2 -Dvalidate_password_EXPORTS -O3 -DBIG_JOINS=1
> -felide-constructors -fno-exceptions -fpermissive -fno-rtti
>  -fno-strict-aliasing  -Wall -Wextra -Wformat-security -Wvla
> -Woverloaded-virtual -Wno-unused-parameter -O3 -g -fabi-version=2
> -fno-omit-frame-pointer -fno-strict-aliasing -DDBUG_OFF -fPIC
> -I/home/jesusch/git/mysql/mysql-5.6/builddir/include
> -I/home/jesusch/git/mysql/mysql-5.6/include
> -I/home/jesusch/git/mysql/mysql-5.6/sql
> -I/home/jesusch/git/mysql/mysql-5.6/regex
> -I/home/jesusch/git/mysql/mysql-5.6/extra/yassl/include
> -I/home/jesusch/git/mysql/mysql-5.6/extra/yassl/taocrypt/include    -o
> CMakeFiles/validate_password.dir/validate_password.cc.o -c
> /home/jesusch/git/mysql/mysql-5.6/plugin/passwor
> d_validation/validate_password.cc
> /home/jesusch/git/mysql/mysql-5.6/plugin/password_validation/validate_password.cc:
> In function ‘void read_dictionary_file()’:
> /home/jesusch/git/mysql/mysql-5.6/plugin/password_validation/validate_password.cc:183:10:
> error: exception handling disabled, use -fexceptions to enable
>
> Is there any reason why we have CXXFLAGS="... -fno-exceptions"?
>
> Cheers
> B
>
>
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