[Buildroot] procps-ng: disable for musl libc

Markus Mayer mmayer at broadcom.com
Wed Jun 3 04:27:54 UTC 2020


On Tue, 2 Jun 2020 at 21:19, Baruch Siach <baruch at tkos.co.il> wrote:
>
> Hi Markus,
>
> On Wed, Jun 03 2020, Markus Mayer wrote:
> > On Tue, 2 Jun 2020 at 20:54, Baruch Siach <baruch at tkos.co.il> wrote:
> >> On Wed, Jun 03 2020, Markus Mayer wrote:
> >> > There is a patch called "procps-ng: disable for musl libc" that was
> >> > applied to 2018.02.x:
> >> >
> >> > https://patchwork.ozlabs.org/project/buildroot/patch/3f2a94307e6c380842726b8158e8ec2e9d24372a.1530616293.git.baruch@tkos.co.il/
> >> >
> >> > This patch does not seem to be in any of the following releases nor is
> >> > it in master.
> >> >
> >> > $ for i in 2018 2019 2020; do for j in 02 05 08 11;do echo "$i/$j";
> >> > git log origin/$i.$j.x | grep 'procps-ng: disable for musl libc';
> >> > done;done
> >> > 2018/02
> >> >     procps-ng: disable for musl libc
> >> > 2018/05
> >> > 2018/08
> >> > 2018/11
> >> > 2019/02
> >> > 2019/05
> >> > 2019/08
> >> > 2019/11
> >> > 2020/02
> >> >
> >> > Is this on purpose or should this patch be applied to all releases
> >> > going forward?
> >>
> >> This is on purpose.
> >>
> >> The commit log you liked to above specifically mentions musl version
> >> 1.1.8 in 2018.02.x. Later Buildroot releases include newer versions of
> >> musl that implement the missing fopencookie().
> >
> > Interesting. Do I need to turn on anything to enable this feature? I
> > am still seeing the very same error with 2020.05 and musl.
> >
> >   CC       procio.o
> >   CC       proc/alloc.lo
> >   CC       proc/devname.lo
> >   CC       proc/escape.lo
> >   CC       proc/numa.lo
> > procio.c:50:8: error: unknown type name 'cookie_io_functions_t'
> >  static cookie_io_functions_t procio = {
> >         ^~~~~~~~~~~~~~~~~~~~~
> > procio.c:51:5: error: field name not in record or union initializer
> >      .read  = proc_read,
> >      ^
> > procio.c:51:5: note: (near initialization for 'procio')
> > procio.c:51:14: warning: initialization makes integer from pointer
> > without a cast [-Wint-conversion]
> >      .read  = proc_read,
> >               ^~~~~~~~~
> > procio.c:51:14: note: (near initialization for 'procio')
> > procio.c:51:14: error: initializer element is not computable at load time
> > procio.c:51:14: note: (near initialization for 'procio')
> > procio.c:52:5: error: field name not in record or union initializer
> >      .write = proc_write,
> >      ^
> > procio.c:52:5: note: (near initialization for 'procio')
> > procio.c:52:14: warning: excess elements in scalar initializer
> >      .write = proc_write,
> >               ^~~~~~~~~~
> > procio.c:52:14: note: (near initialization for 'procio')
> > procio.c:53:5: error: field name not in record or union initializer
> >      .seek  = NULL,
> >      ^
> > procio.c:53:5: note: (near initialization for 'procio')
> > procio.c:53:14: warning: excess elements in scalar initializer
> >      .seek  = NULL,
> >               ^~~~
> > procio.c:53:14: note: (near initialization for 'procio')
> > procio.c:54:5: error: field name not in record or union initializer
> >      .close = proc_close,
> >      ^
> > procio.c:54:5: note: (near initialization for 'procio')
> > procio.c:54:14: warning: excess elements in scalar initializer
> >      .close = proc_close,
> >               ^~~~~~~~~~
> > procio.c:54:14: note: (near initialization for 'procio')
> > procio.c: In function 'fprocopen':
> > procio.c:136:11: warning: implicit declaration of function
> > 'fopencookie' [-Wimplicit-function-declaration]
> >   handle = fopencookie(cookie, mode, procio);
> >            ^~~~~~~~~~~
> > procio.c:136:9: warning: assignment makes pointer from integer without
> > a cast [-Wint-conversion]
> >   handle = fopencookie(cookie, mode, procio);
> >          ^
> > Makefile:1501: recipe for target 'procio.o' failed
> >
> > It works fine with glibc. I just started experimenting with libmusl.
>
> procps-ng builds fine with musl here on master commit
> c7cd1f0370871b4633. This is my defconfig:
>
> BR2_arm=y
> BR2_cortex_a9=y
> BR2_ARM_ENABLE_VFP=y
> BR2_TOOLCHAIN_EXTERNAL=y
> BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
> BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
> BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-cortex-a9-musl-2020.02.tar.bz2"
> BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
> BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_4=y
> BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
> BR2_TOOLCHAIN_EXTERNAL_CXX=y
> BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> BR2_PACKAGE_PROCPS_NG=y
>
> What is yours?

BR2_aarch64=y
BR2_cortex_a53=y
BR2_ARM_FPU_FP_ARMV8=y

BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED=y
BR2_TOOLCHAIN_EXTERNAL_MUSL=y
BR2_PACKAGE_HAS_TOOLCHAIN_EXTERNAL=y
BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL="toolchain-external-custom"
BR2_TOOLCHAIN_EXTERNAL_PREFIX="$(ARCH)-linux"
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="$(ARCH)-linux"
BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
BR2_TOOLCHAIN_EXTERNAL_HAS_SSP=y
BR2_TOOLCHAIN_EXTERNAL_HAS_SSP_STRONG=y
BR2_TOOLCHAIN_EXTERNAL_CXX=y

Mine is aarch64. GCC is 6.3 and the kernel is 4.9 (the toolchain is
configured with 4.1 headers to support 4.1 and 4.9).

Regards,
-Markus

> baruch
>
> --
>                                                      ~. .~   Tk Open Systems
> =}------------------------------------------------ooO--U--Ooo------------{=
>    - baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -


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