Bug#914688: g++: fails to understand BOOST_OS_LINUX on ppc64el?
On Mon, 26 Nov 2018 11:50:21 +0100 Matthias Klose wrote:
> Control: severity -1 important
> Control: tags -1 + moreinfo
>
> On 26.11.18 11:23, Gianfranco Costamagna wrote:
> > Source: gcc-8
> > Version: 8.2.0-10
> > Severity: serious
> > Affects: src:performous
> >
> > Hello, after trying to debug why src:performous was FTBFS on ppc64el, I
got this issue:
> >
> > test example reproducing the issue:
> > cat test.c++
> > #include
> > #include
> >
> > #if BOOST_OS_LINUX
> > #warning "OS LINUX DEFINED"
> > #endif
> >
> > int main()
> > {
> >printf("%d\n", BOOST_OS_WINDOWS);
> >printf("%d\n", BOOST_OS_LINUX);
> > }
> >
> >
> > apt-get install libboost-dev
> >
> > on an amd64 machine this happens:
> > $ g++ test.c++
> > test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> > #warning "OS LINUX DEFINED"
> > ^~~
> >
> > $ g++ test.c++ -std=c++14
> > test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> > #warning "OS LINUX DEFINED"
> > ^~~
> >
> > (everything is ok)
> >
> > on a ppc64el machine this happens instead:
> > g++ test.c++
> > test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> > #warning "OS LINUX DEFINED"
> > ^~~
> >
> > g++ test.c++ -std=c++14
> > (NO WARNINGS HERE).
> >
> > this is why the package FTBFS, because that macro is not defined when
std is defined.
> >
> > Any idea?
> > (this might be a boost issue, but I can't prove it!)
>
> ... but you are sure enough to file a RC issue for a different package.
>
> > same happens with old g++-7, and with c++0x or c++11
>
Bug#914688: g++: fails to understand BOOST_OS_LINUX on ppc64el?
control: severity -1 serious I reduced to a simple test case that involves no boost at all, and only a macro. cat test.cpp this code shows on ppc64el: $ g++ test.cpp -std=c++14 -c NO OUTPUT (wrong) $ g++ test.cpp -c test.cpp:2:2: warning: #warning defined linux [-Wcpp] #warning defined linux ^~~ test.cpp:6:2: warning: #warning defined __linux [-Wcpp] #warning defined __linux ^~~ good output. Is is a clear test case now? on amd64 both are returning correct, at least __linux is still defined. $ g++ test.cpp -c -std=c++14 test.cpp:6:2: warning: #warning defined __linux [-Wcpp] #warning defined __linux ^~~ $ g++ test.cpp -c test.cpp:2:2: warning: #warning defined linux [-Wcpp] #warning defined linux ^~~ test.cpp:6:2: warning: #warning defined __linux [-Wcpp] #warning defined __linux ^~~ I hope this makes the issue a little bit more clear! G.
Bug#914688: g++: fails to understand BOOST_OS_LINUX on ppc64el?
Control: severity -1 important
Control: tags -1 + moreinfo
On 26.11.18 11:23, Gianfranco Costamagna wrote:
> Source: gcc-8
> Version: 8.2.0-10
> Severity: serious
> Affects: src:performous
>
> Hello, after trying to debug why src:performous was FTBFS on ppc64el, I got
> this issue:
>
> test example reproducing the issue:
> cat test.c++
> #include
> #include
>
> #if BOOST_OS_LINUX
> #warning "OS LINUX DEFINED"
> #endif
>
> int main()
> {
> printf("%d\n", BOOST_OS_WINDOWS);
> printf("%d\n", BOOST_OS_LINUX);
> }
>
>
> apt-get install libboost-dev
>
> on an amd64 machine this happens:
> $ g++ test.c++
> test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> #warning "OS LINUX DEFINED"
> ^~~
>
> $ g++ test.c++ -std=c++14
> test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> #warning "OS LINUX DEFINED"
> ^~~
>
> (everything is ok)
>
> on a ppc64el machine this happens instead:
> g++ test.c++
> test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
> #warning "OS LINUX DEFINED"
> ^~~
>
> g++ test.c++ -std=c++14
> (NO WARNINGS HERE).
>
> this is why the package FTBFS, because that macro is not defined when std is
> defined.
>
> Any idea?
> (this might be a boost issue, but I can't prove it!)
... but you are sure enough to file a RC issue for a different package.
> same happens with old g++-7, and with c++0x or c++11
look at include hierarchy, and defined macros, and try to figure out what
happens here.
Bug#914688: g++: fails to understand BOOST_OS_LINUX on ppc64el?
Source: gcc-8
Version: 8.2.0-10
Severity: serious
Affects: src:performous
Hello, after trying to debug why src:performous was FTBFS on ppc64el, I got
this issue:
test example reproducing the issue:
cat test.c++
#include
#include
#if BOOST_OS_LINUX
#warning "OS LINUX DEFINED"
#endif
int main()
{
printf("%d\n", BOOST_OS_WINDOWS);
printf("%d\n", BOOST_OS_LINUX);
}
apt-get install libboost-dev
on an amd64 machine this happens:
$ g++ test.c++
test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
#warning "OS LINUX DEFINED"
^~~
$ g++ test.c++ -std=c++14
test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
#warning "OS LINUX DEFINED"
^~~
(everything is ok)
on a ppc64el machine this happens instead:
g++ test.c++
test.c++:5:2: warning: #warning "OS LINUX DEFINED" [-Wcpp]
#warning "OS LINUX DEFINED"
^~~
g++ test.c++ -std=c++14
(NO WARNINGS HERE).
this is why the package FTBFS, because that macro is not defined when std is
defined.
Any idea?
(this might be a boost issue, but I can't prove it!)
same happens with old g++-7, and with c++0x or c++11
G.
