* [gentoo-dev] new helper: econf_build
@ 2011-10-13 23:48 Mike Frysinger
2011-10-14 1:41 ` Alec Warner
2011-10-14 7:08 ` Michael Haubenwallner
0 siblings, 2 replies; 6+ messages in thread
From: Mike Frysinger @ 2011-10-13 23:48 UTC (permalink / raw
To: gentoo-dev
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i've found myself a few times having to implement logic like so:
CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
CPPFLAGS=${BUILD_CPPFLAGS} \
LDFLAGS=${BUILD_LDFLAGS} \
CC=$(tc-getBUILD_CC) \
LD=$(tc-getBUILD_LD) \
econf --host=${CBUILD} "$@"
this is to deal with packages that build up not insignificant (let's call them
"nificant") binaries which are then used at build time. when cross-compiling,
you can't execute those binaries, and things fail.
python is a good example. it builds up the local python interpreter (which is
all written in C/etc...), and then uses that to parse local python scripts
which take care of building everything else. so a while ago we added code so
that it'd build two python binaries when cross-compiling: a local ${CBUILD}
version which is then used to parse the python build files to compile for
${CHOST}. using host python won't work if it's newer/older/insane/afk.
ncurses compiles its local term database by first creating a tic helper and
then parsing its local files. we can't use the build system's tic because if
the installed ncurses is a different version, we run into fun things like
crashes/infinite loops/etc...
the latest thing i hit was elfutils where it creates a local binary to
generate a database of headers which it then compiles into the target code.
so rather than continuing to copy & paste this logic everywhere, i'm going to
add it to toolchain-funcs.eclass as "econf_build". any feedback before i do ?
-mike
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [gentoo-dev] new helper: econf_build
2011-10-13 23:48 [gentoo-dev] new helper: econf_build Mike Frysinger
@ 2011-10-14 1:41 ` Alec Warner
2011-10-14 2:01 ` Mike Frysinger
2011-10-14 7:08 ` Michael Haubenwallner
1 sibling, 1 reply; 6+ messages in thread
From: Alec Warner @ 2011-10-14 1:41 UTC (permalink / raw
To: gentoo-dev
On Thu, Oct 13, 2011 at 4:48 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> i've found myself a few times having to implement logic like so:
> CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
> CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
> CPPFLAGS=${BUILD_CPPFLAGS} \
> LDFLAGS=${BUILD_LDFLAGS} \
> CC=$(tc-getBUILD_CC) \
> LD=$(tc-getBUILD_LD) \
> econf --host=${CBUILD} "$@"
I'm a newb, are BUILD_* expected to be set by users?
-A
>
> this is to deal with packages that build up not insignificant (let's call them
> "nificant") binaries which are then used at build time. when cross-compiling,
> you can't execute those binaries, and things fail.
>
> python is a good example. it builds up the local python interpreter (which is
> all written in C/etc...), and then uses that to parse local python scripts
> which take care of building everything else. so a while ago we added code so
> that it'd build two python binaries when cross-compiling: a local ${CBUILD}
> version which is then used to parse the python build files to compile for
> ${CHOST}. using host python won't work if it's newer/older/insane/afk.
>
> ncurses compiles its local term database by first creating a tic helper and
> then parsing its local files. we can't use the build system's tic because if
> the installed ncurses is a different version, we run into fun things like
> crashes/infinite loops/etc...
>
> the latest thing i hit was elfutils where it creates a local binary to
> generate a database of headers which it then compiles into the target code.
>
> so rather than continuing to copy & paste this logic everywhere, i'm going to
> add it to toolchain-funcs.eclass as "econf_build". any feedback before i do ?
> -mike
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [gentoo-dev] new helper: econf_build
2011-10-13 23:48 [gentoo-dev] new helper: econf_build Mike Frysinger
2011-10-14 1:41 ` Alec Warner
@ 2011-10-14 7:08 ` Michael Haubenwallner
2011-10-14 15:45 ` Mike Frysinger
1 sibling, 1 reply; 6+ messages in thread
From: Michael Haubenwallner @ 2011-10-14 7:08 UTC (permalink / raw
To: gentoo-dev
On 10/14/11 01:48, Mike Frysinger wrote:
> i've found myself a few times having to implement logic like so:
> CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
> CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
> CPPFLAGS=${BUILD_CPPFLAGS} \
> LDFLAGS=${BUILD_LDFLAGS} \
> CC=$(tc-getBUILD_CC) \
> LD=$(tc-getBUILD_LD) \
> econf --host=${CBUILD} "$@"
>
<snip>
> so rather than continuing to copy & paste this logic everywhere, i'm going to
> add it to toolchain-funcs.eclass as "econf_build". any feedback before i do ?
Eventually not to stick to 'econf', but provide a more generic one,
so it is useable like this (in lack of a better name):
run_with_build_env econf --host=${CBUILD} ...
/haubi/
--
Michael Haubenwallner
Gentoo on a different level
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [gentoo-dev] new helper: econf_build
2011-10-14 7:08 ` Michael Haubenwallner
@ 2011-10-14 15:45 ` Mike Frysinger
2011-10-14 15:53 ` Michael Haubenwallner
0 siblings, 1 reply; 6+ messages in thread
From: Mike Frysinger @ 2011-10-14 15:45 UTC (permalink / raw
To: gentoo-dev
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On Friday 14 October 2011 03:08:14 Michael Haubenwallner wrote:
> On 10/14/11 01:48, Mike Frysinger wrote:
> > i've found myself a few times having to implement logic like so:
> > CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
> > CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
> > CPPFLAGS=${BUILD_CPPFLAGS} \
> > LDFLAGS=${BUILD_LDFLAGS} \
> > CC=$(tc-getBUILD_CC) \
> > LD=$(tc-getBUILD_LD) \
> > econf --host=${CBUILD} "$@"
>
> <snip>
>
> > so rather than continuing to copy & paste this logic everywhere, i'm
> > going to add it to toolchain-funcs.eclass as "econf_build". any
> > feedback before i do ?
>
> Eventually not to stick to 'econf', but provide a more generic one,
> so it is useable like this (in lack of a better name):
>
> run_with_build_env econf --host=${CBUILD} ...
i thought of that, but it seems like we've generally moved away from this
style in the tree. the biggest example being `try ...` -> `... || die`.
i'll probably implement as an @INTERNAL:
tc-env_build() { ... }
then define econf_build on top of that as an exported API. then let's see what
grows organically beyond.
-mike
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [gentoo-dev] new helper: econf_build
2011-10-14 15:45 ` Mike Frysinger
@ 2011-10-14 15:53 ` Michael Haubenwallner
0 siblings, 0 replies; 6+ messages in thread
From: Michael Haubenwallner @ 2011-10-14 15:53 UTC (permalink / raw
To: gentoo-dev
On 10/14/11 17:45, Mike Frysinger wrote:
> On Friday 14 October 2011 03:08:14 Michael Haubenwallner wrote:
>> On 10/14/11 01:48, Mike Frysinger wrote:
>>> i've found myself a few times having to implement logic like so:
>>> CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
>>> CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
>>> CPPFLAGS=${BUILD_CPPFLAGS} \
>>> LDFLAGS=${BUILD_LDFLAGS} \
>>> CC=$(tc-getBUILD_CC) \
>>> LD=$(tc-getBUILD_LD) \
>>> econf --host=${CBUILD} "$@"
>>
>> <snip>
> i'll probably implement as an @INTERNAL:
> tc-env_build() { ... }
>
> then define econf_build on top of that as an exported API. then let's see what
> grows organically beyond.
Fine with me.
/haubi/
--
Michael Haubenwallner
Gentoo on a different level
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-10-14 15:54 UTC | newest]
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2011-10-13 23:48 [gentoo-dev] new helper: econf_build Mike Frysinger
2011-10-14 1:41 ` Alec Warner
2011-10-14 2:01 ` Mike Frysinger
2011-10-14 7:08 ` Michael Haubenwallner
2011-10-14 15:45 ` Mike Frysinger
2011-10-14 15:53 ` Michael Haubenwallner
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