PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works

[H.J. Lu]

On Tue, Jul 28, 2020 at 6:45 AM Alan Modra <amodra@gmail.com> wrote:
>
> On Tue, Jul 28, 2020 at 11:09:02PM +0930, Alan Modra wrote:
> > git commit d70f978b44aafc broke binutils builds on Ubuntu 18.04.4
> >
> > dwarf.c:36:10: fatal error: elfutils/debuginfod.h: No such file or directory
>
> configure:12396: checking whether to use debuginfod
> configure:12398: result: auto
> configure:12404: checking for libdebuginfod >= 0.179
> configure:12411: $PKG_CONFIG --exists --print-errors "libdebuginfod >= 0.179"
> Package libdebuginfod was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libdebuginfod.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libdebuginfod' found
> configure:12414: $? = 1
> configure:12428: $PKG_CONFIG --exists --print-errors "libdebuginfod >= 0.179"
> Package libdebuginfod was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libdebuginfod.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libdebuginfod' found
> configure:12431: $? = 1
> configure:12455: gcc -o conftest -g -Og     conftest.c -ldl  >&5
> configure:12455: $? = 0
> configure:12501: result: yes
>

I am checking in this:

https://sourceware.org/pipermail/binutils/2020-July/112583.html

It should fix it.

-- 
H.J.