Re: V2 [PATCH] PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works

H.J. Lu
2020-07-28T14:11:57Z

On Tue, Jul 28, 2020 at 7:01 AM Simon Marchi <simark@simark.ca> wrote:
>
> On 2020-07-28 9:56 a.m., H.J. Lu wrote:
> > On Tue, Jul 28, 2020 at 6:51 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
> >>
> >> On Jul 28 2020, H.J. Lu via Binutils wrote:
> >>
> >>> On x86, the native GCC can support -m32 and -m64. "gcc -m32" or "gcc -m64"
> >>> are not cross compiling.
> >>
> >> You cannot link -m64 and -m32 together.
> >>
> >>> I didn't set PKG_CONFIG_LIBDIR and I don't want to set it.
> >>
> >> Then use the correct pkg-config for your target. If you think
> >> pkg-config is broken, then fix _that_.
> >>
> >
> > I did:
> >
> > RUNTESTFLAGS="--target_board 'unix{-m32}'" CC="gcc -m32 -fno-lto
> > -fcf-protection"
> > CXX="g++ -fno-lto -m32 -fcf-protection" /exp
> > ort/gnu/import/git/gitlab/x86-binutils/configure \
> > --enable-targets=x86_64-linux \
> > i686-linux \
> > --enable-plugins --disable-gdb --disable-gdbserver --disable-libdecnumbe
> > r --disable-readline --disable-sim --with-sysroot=/ --with-system-zlib \
> > --prefix=/usr/local \
> > --with-local-prefix=/usr/local
> > configure: WARNING: you should use --build, --host, --target
> > checking build system type... i686-pc-linux-gnu
> > checking host system type... i686-pc-linux-gnu
> > checking target system type... i686-pc-linux-gnu
>
> So... is your build system a 32-bit one? Why does the above say i686-pc-linux-gnu
> and not x86_64-something?
>

My system supports both -m32 and -m64. Depending on CC, configure
selects i686 or x86-64 target.

--
H.J.