[opensuse-packaging] Selecting GCC version

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Matthias Fehring

30 Mar 2017 30 Mar '17

10:51

Hello, is there a simple way to force the GCC version used to build a package? openSUSE Leap 42.2 for example uses GCC 4.8 as default compiler, but also provides packages for GCC 5.3. Simply using BuildRequires gcc5 pulls gcc5 in but still uses gcc48 to build the package (especially in Build Service). So is there maybe some Buid Service or spec file switch (bcond) to select the used GCC version? Best greetings Matthias Fehring P.S. Not sure if it is a problem with my browser settings, but when I try to search lists.opensuse.org, it is not possible for me to limit the results to a specific list. Even if I set one, I get results from all lists, what makes searching almost impossible, because most results are commit messages. -- Das Gesetz hat zum Schneckengang verdorben, was Adlerflug geworden wäre. (Friedrich Schiller - Die Räuber) www.buschmann23.de GPG-Key: 0x614C3258 GPG Fingerprint: D786 DDF8 4CA9 00BC CDE0 9A5F CCC5 125D 6E87 D4FC

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Jan Engelhardt

30 Mar 30 Mar

11:18

On Thursday 2017-03-30 12:51, Matthias Fehring wrote:

...

So is there maybe some Buid Service or spec file switch (bcond) to select the used GCC version?

%build export CC=gcc-5 %configure ... ? -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Matthias Fehring

11:37

Am 30.03.2017 um 13:18 schrieb Jan Engelhardt:

...

On Thursday 2017-03-30 12:51, Matthias Fehring wrote:

...
So is there maybe some Buid Service or spec file switch (bcond) to select the used GCC version? %build export CC=gcc-5 %configure ... ?

Arrrrgh, not seeing the wood for the trees.... Thank you :) -- Das Gesetz hat zum Schneckengang verdorben, was Adlerflug geworden wäre. (Friedrich Schiller - Die Räuber) www.buschmann23.de GPG-Key: 0x614C3258 GPG Fingerprint: D786 DDF8 4CA9 00BC CDE0 9A5F CCC5 125D 6E87 D4FC

Christian Boltz

20:08

Hello, Am Donnerstag, 30. März 2017, 12:51:00 CEST schrieb Matthias Fehring:

...

Simply using BuildRequires gcc5 pulls gcc5 in but still uses gcc48 to build the package (especially in Build Service).

Besides Jan's way, using a BuiltIgnore could be another option.

...

P.S. Not sure if it is a problem with my browser settings, but when I try to search lists.opensuse.org, it is not possible for me to limit the results to a specific list. Even if I set one, I get results from all lists, what makes searching almost impossible, because most results are commit messages.

Please report such issues to admin@opensuse.org ;-) That said - this is a known issue: https://progress.opensuse.org/issues/4314 Regards, Christian Boltz --

...

Apper segfaults [...] Well, that's annoying but it's better not to be in the dark. I foresee a busy Tuesday evening in my near future. [Will Stephenson in opensuse-factory]

-- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Hans-Peter Jansen

31 Mar 31 Mar

12:29

Hi Jan, Christian, all, On Donnerstag, 30. März 2017 22:08:40 Christian Boltz wrote:

...

Hello,

Am Donnerstag, 30. März 2017, 12:51:00 CEST schrieb Matthias Fehring:

...
Simply using BuildRequires gcc5 pulls gcc5 in but still uses gcc48 to build the package (especially in Build Service).

Besides Jan's way, using a BuiltIgnore could be another option.

Both ways, exyporting CC and defining #BuildIgnore are spec based. Any idea, how to select another compiler for a whole project in prjconf? TIA, Pete -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Jan Engelhardt

13:45

On Saturday 2018-03-31 14:29, Hans-Peter Jansen wrote:

...

Hi Jan, Christian, all,

On Donnerstag, 30. März 2017 22:08:40 Christian Boltz wrote:

...
Hello,

Am Donnerstag, 30. März 2017, 12:51:00 CEST schrieb Matthias Fehring:

...
Simply using BuildRequires gcc5 pulls gcc5 in but still uses gcc48 to build the package (especially in Build Service).

Besides Jan's way, using a BuiltIgnore could be another option.

Both ways, exyporting CC and defining #BuildIgnore are spec based. Any idea, how to select another compiler for a whole project in prjconf?

Macros: %__cc gcc-8 %__cxx g++-8 :Macros But, because %configure and %cmake for example do not read %__cc unfortunately (why?!), it in itself has no effect. Some work from upstream rpm is needed. -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Hans-Peter Jansen

18:40

Hi Jan, thanks for your well educated response (as always). Much appreciated. On Samstag, 31. März 2018 15:45:13 Jan Engelhardt wrote:

...

On Saturday 2018-03-31 14:29, Hans-Peter Jansen wrote:

...
Hi Jan, Christian, all,

On Donnerstag, 30. März 2017 22:08:40 Christian Boltz wrote:

...
Hello,

Am Donnerstag, 30. März 2017, 12:51:00 CEST schrieb Matthias Fehring:

...
Simply using BuildRequires gcc5 pulls gcc5 in but still uses gcc48 to build the package (especially in Build Service).

Besides Jan's way, using a BuiltIgnore could be another option.

Both ways, exyporting CC and defining #BuildIgnore are spec based. Any idea, how to select another compiler for a whole project in prjconf?

Macros: %__cc gcc-8 %__cxx g++-8

:Macros

But, because %configure and %cmake for example do not read %__cc unfortunately (why?!), it in itself has no effect. Some work from upstream rpm is needed.

which in turn means, that I have to touch every spec, doesn't it? In a local OBS, where I attempt to build Kernel:stable and friends, I fiddled with below to get $subject going, but failed so far, barfing on a missing gcc. Looks, like I need to create a gcc7-default package, that symlinks gcc7 and consorts to gcc. Has anybody done this before? Guess, this plan isn't that uncommon nowadays... %define gcc_version 7 Ignore: libgcc_s1 Preinstall: !libgcc_s1 libgcc_s1-gcc7 Prefer: -libstdc++6 libstdc++6-gcc7 Prefer: -libtsan0 libtsan0-gcc7 Prefer: -libgomp1 libgomp1-gcc7 Prefer: -libgcc_s1 libgcc_s1-gcc7 Prefer: -libatomic1 libatomic1-gcc7 Prefer: -libcilkrts5 libcilkrts5-gcc7 Prefer: -libitm1 libitm1-gcc7 Prefer: -liblsan0 liblsan0-gcc7 Prefer: -libmpx2 libmpx2-gcc7 Prefer: -libubsan0 libubsan0-gcc7 Required: gcc7 cpp7 gcc7-devel Ignore: gcc48 cpp48 Ignore: gcc-4.8 cpp-4.8 Ignore: gcc-c++ Ignore: gcc-devel Substitute: gcc48 gcc7 Substitute: gcc gcc7 Substitute: cpp48 cpp7 Substitute: cpp cpp7 Substitute: gcc-4.8 gcc7 Substitute: gcc-c++ gcc7-c++ Substitute: gcc-devel gcc7-devel #Prefer: -gcc gcc7 #Prefer: -gcc48 gcc7 #Prefer: -cpp48 cpp7 Macros: %__cc gcc-7 %__cxx g++-7 :Macros Cheers, Pete -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Andreas Schwab

3 Apr 3 Apr

09:34

New subject: [opensuse-packaging] Re: Selecting GCC version

On Mär 31 2018, Hans-Peter Jansen wrote:

...

In a local OBS, where I attempt to build Kernel:stable and friends, I fiddled with below to get $subject going, but failed so far, barfing on a missing gcc.

Looks, like I need to create a gcc7-default package, that symlinks gcc7 and consorts to gcc. Has anybody done this before?

Guess, this plan isn't that uncommon nowadays...

%define gcc_version 7 Ignore: libgcc_s1 Preinstall: !libgcc_s1 libgcc_s1-gcc7 Prefer: -libstdc++6 libstdc++6-gcc7 Prefer: -libtsan0 libtsan0-gcc7 Prefer: -libgomp1 libgomp1-gcc7 Prefer: -libgcc_s1 libgcc_s1-gcc7 Prefer: -libatomic1 libatomic1-gcc7 Prefer: -libcilkrts5 libcilkrts5-gcc7 Prefer: -libitm1 libitm1-gcc7 Prefer: -liblsan0 liblsan0-gcc7 Prefer: -libmpx2 libmpx2-gcc7 Prefer: -libubsan0 libubsan0-gcc7

That's all you should need, together with a branch of the gcc package with has gcc_version and gcc_suffix adjusted. Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different." -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Marcus Meissner

09:36

New subject: [opensuse-packaging] Re: Selecting GCC version

On Tue, Apr 03, 2018 at 11:34:02AM +0200, Andreas Schwab wrote:

...

On Mär 31 2018, Hans-Peter Jansen wrote:

...
In a local OBS, where I attempt to build Kernel:stable and friends, I fiddled with below to get $subject going, but failed so far, barfing on a missing gcc.

Looks, like I need to create a gcc7-default package, that symlinks gcc7 and consorts to gcc. Has anybody done this before?

Guess, this plan isn't that uncommon nowadays...

%define gcc_version 7 Ignore: libgcc_s1 Preinstall: !libgcc_s1 libgcc_s1-gcc7 Prefer: -libstdc++6 libstdc++6-gcc7 Prefer: -libtsan0 libtsan0-gcc7 Prefer: -libgomp1 libgomp1-gcc7 Prefer: -libgcc_s1 libgcc_s1-gcc7 Prefer: -libatomic1 libatomic1-gcc7 Prefer: -libcilkrts5 libcilkrts5-gcc7 Prefer: -libitm1 libitm1-gcc7 Prefer: -liblsan0 liblsan0-gcc7 Prefer: -libmpx2 libmpx2-gcc7 Prefer: -libubsan0 libubsan0-gcc7

That's all you should need, together with a branch of the gcc package with has gcc_version and gcc_suffix adjusted.

Why not use BuildRequires: gcc7 and later on: set CC=gcc-7 instead? Ciao, Marcus -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Jan Engelhardt

09:39

New subject: [opensuse-packaging] Re: Selecting GCC version

On Tuesday 2018-04-03 11:36, Marcus Meissner wrote:

...

Why not use BuildRequires: gcc7

and later on:

set CC=gcc-7

instead?

Because set CC requires modifying the spec file(s), of which there are potentially many. -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Hans-Peter Jansen

10:58

New subject: [opensuse-packaging] Re: Selecting GCC version

On Dienstag, 3. April 2018 11:34:02 Andreas Schwab wrote:

...

On Mär 31 2018, Hans-Peter Jansen wrote:

...
In a local OBS, where I attempt to build Kernel:stable and friends, I fiddled with below to get $subject going, but failed so far, barfing on a missing gcc.

Looks, like I need to create a gcc7-default package, that symlinks gcc7 and consorts to gcc. Has anybody done this before?

Guess, this plan isn't that uncommon nowadays...

%define gcc_version 7 Ignore: libgcc_s1 Preinstall: !libgcc_s1 libgcc_s1-gcc7 Prefer: -libstdc++6 libstdc++6-gcc7 Prefer: -libtsan0 libtsan0-gcc7 Prefer: -libgomp1 libgomp1-gcc7 Prefer: -libgcc_s1 libgcc_s1-gcc7 Prefer: -libatomic1 libatomic1-gcc7 Prefer: -libcilkrts5 libcilkrts5-gcc7 Prefer: -libitm1 libitm1-gcc7 Prefer: -liblsan0 liblsan0-gcc7 Prefer: -libmpx2 libmpx2-gcc7 Prefer: -libubsan0 libubsan0-gcc7

That's all you should need, together with a branch of the gcc package with has gcc_version and gcc_suffix adjusted.

Well, I find it a bit expensive to rebuild two gcc packages (in worst case) just for changing the compiler, but possibly the way to go. Does anybody know, how the build system behaves, if I "overload" %___build_pre of /usr/lib/rpm/macros within another macro file? Is the load order of macro files documented/deterministic? Would be much easier to Preinstall a rpm_macros_gcc7 package, where a matching CC is exported in %___build_pre, wouldn't it? Cheers, Pete -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Jan Engelhardt

11:24

New subject: [opensuse-packaging] Re: Selecting GCC version

On Tuesday 2018-04-03 12:58, Hans-Peter Jansen wrote:

...

...
That's all you should need, together with a branch of the gcc package with has gcc_version and gcc_suffix adjusted.

Well, I find it a bit expensive to rebuild two gcc packages (in worst case) just for changing the compiler, but possibly the way to go.

It's just the gcc *metapackage* (with the symlinks), not gcc7/gcc8.src.rpm itself. -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Andreas Schwab

12:41

New subject: [opensuse-packaging] Re: Selecting GCC version

On Apr 03 2018, Hans-Peter Jansen wrote:

...

Well, I find it a bit expensive to rebuild two gcc packages (in worst case) just for changing the compiler, but possibly the way to go.

There is only one package named gcc. Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different." -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

Hans-Peter Jansen

15:16

New subject: [opensuse-packaging] Re: Selecting GCC version

On Dienstag, 3. April 2018 14:41:30 Andreas Schwab wrote:

...

On Apr 03 2018, Hans-Peter Jansen wrote:

...
Well, I find it a bit expensive to rebuild two gcc packages (in worst case) just for changing the compiler, but possibly the way to go.

There is only one package named gcc.

Duh, of course. Thanks, Jan and Andreas. For the record: In order to change the default gcc for a project, do this: Provide the gcc build in a repo, and add this repo to your upstream repos in the project meta data, e.g.: <repository name="openSUSE_Leap_42.3"> <path project="home:xxx:gcc" repository="openSUSE_Leap_42.3"/> <path project="openSUSE:Leap:42.3:Update" repository="standard"/> <arch>x86_64</arch> </repository> Add this to prjconf: # change to gcc7 %define gcc_version 7 Preinstall: !libgcc_s1 libgcc_s1-gcc7 Prefer: -libstdc++6 libstdc++6-gcc7 Prefer: -libtsan0 libtsan0-gcc7 Prefer: -libgomp1 libgomp1-gcc7 Prefer: -libgcc_s1 libgcc_s1-gcc7 Prefer: -libatomic1 libatomic1-gcc7 Prefer: -libcilkrts5 libcilkrts5-gcc7 Prefer: -libitm1 libitm1-gcc7 Prefer: -liblsan0 liblsan0-gcc7 Prefer: -libmpx2 libmpx2-gcc7 Prefer: -libubsan0 libubsan0-gcc7 link gcc package into your project, adjust gcc_version and gcc_suffix in the spec: %define gcc_version 7 %define gcc_suffix 7 Version: 7 Cheers, Pete -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-packaging+owner@opensuse.org

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Andreas Schwab
Christian Boltz
Hans-Peter Jansen
Jan Engelhardt
Marcus Meissner
Matthias Fehring

[opensuse-packaging] Selecting GCC version

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