[Buildroot] [PATCH 2/2] enable static linking for libfuse

[Stefan Fröberg]

Hi Arvid


Arvid Picciani kirjoitti 14.12.2017 klo 17:27:
> thanks for checking.
> yes i did see the comment that's why i didnt submit a proper patch but
> more an RFC.
> It builds fine for me. maybe it doesn't try to use the dlopen stuff
> with musl?
>

Just out of interest:  do you also have the following static musl
libraries with size 8 bytes and
content just "!<arch>" and nothing more :
libcrypt,a libdl.a libm.a libpthread.a libresolv.a librt.a libutil.a
libxnet.a

Musl seems to stuff all their stuff into libc.a when using static linking?

I am asking this because I have dlopen problem with static linking
Python on musl.
(or actually, I can build Python completely statically against musl just
fine if I disable the dlopen part but that will
also disable pip and setuptools support)


-S-


>
> On Thu, Dec 14, 2017 at 4:21 PM, Thomas Petazzoni
> <thomas.petazzoni at free-electrons.com
> <mailto:thomas.petazzoni at free-electrons.com>> wrote:
>
>     Hello,
>
>     Thanks for your contribution. However...
>
>     On Thu, 14 Dec 2017 11:57:06 +0100, Arvid E. Picciani wrote:
>     > Signed-off-by: Arvid E. Picciani <aep at exys.org
>     <mailto:aep at exys.org>>
>     > ---
>     >  package/libfuse/Config.in  | 4 ----
>     >  package/libfuse/libfuse.mk <http://libfuse.mk> | 3 ++-
>     >  2 files changed, 2 insertions(+), 5 deletions(-)
>     >
>     > diff --git a/package/libfuse/Config.in b/package/libfuse/Config.in
>     > index 2b0e31a991..62b18c2444 100644
>     > --- a/package/libfuse/Config.in
>     > +++ b/package/libfuse/Config.in
>     > @@ -1,7 +1,6 @@
>     >  config BR2_PACKAGE_LIBFUSE
>     >       bool "libfuse"
>     >       # Really doesn't like static, see fuse/lib/fuse.c
>
>     ...did you see this comment?
>
>     fuse.c uses dlopen(), this requires shared library support.
>
>     Apply your patch, and build the following configuration:
>
>     BR2_arm=y
>     BR2_STATIC_LIBS=y
>     BR2_TOOLCHAIN_EXTERNAL=y
>     BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
>     BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-full-static-2017.11-rc1.tar.bz2
>     <http://autobuild.buildroot.org/toolchains/tarballs/br-arm-full-static-2017.11-rc1.tar.bz2>"
>     BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
>     BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10=y
>     BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
>     # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
>     BR2_TOOLCHAIN_EXTERNAL_CXX=y
>     BR2_INIT_NONE=y
>     BR2_SYSTEM_BIN_SH_NONE=y
>     # BR2_PACKAGE_BUSYBOX is not set
>     BR2_PACKAGE_LIBFUSE=y
>     # BR2_TARGET_ROOTFS_TAR is not set
>
>     You'll get the following build failure:
>
>     fuse.c:33:19: fatal error: dlfcn.h: No such file or directory
>      #include <dlfcn.h>
>                        ^
>     compilation terminated.
>
>     Also, passing --enable-static is not necessary, this is already
>     done by
>     the autotools-package infrastructure when BR2_STATIC_LIBS=y.
>
>     Best regards,
>
>     Thomas
>     --
>     Thomas Petazzoni, CTO, Free Electrons
>     Embedded Linux and Kernel engineering
>     http://free-electrons.com
>
>
>
>
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