[libvirt] [PATCH 1/9] Add some autoconf helper macros for checking for libraries

[Daniel P. Berrange]

On Fri, Jan 11, 2013 at 11:09:15AM -0700, Eric Blake wrote:
> On 01/10/2013 03:20 PM, Eric Blake wrote:
> > On 01/10/2013 01:18 PM, Daniel P. Berrange wrote:
> >> From: "Daniel P. Berrange" <berrange at redhat.com>
> >>
> >> Most checks for libraries take the same format
> >>
> >>   * --with-libFOO=yes|no|check|/some/path  argument
> >>   * check for a function NNN in libFOO.so
> >>   * check for a header file DDD/HHH.h
> >>   * Define a WITH_FOO config.h symbol
> >>   * Define a WITH_FOO make conditional
> >>   * Substitute FOO_CFLAGS and FOO_LIBS make variables
> >>   * Print CFLAGS & LIBS summary at the end
> >>
> > 
> > General impression - nice!
> > 
> 
> >> +  m4_expand(cflags_var[=])
> >> +  m4_expand(libs_var[=])
> > 
> > Overkill; you could get by with:
> > 
> > libvirt quality:
> > cflags_var=
> > libs_var=
> > 
> > Pedantic quality:
> > m4_defn([cflags_var])=
> > m4_defn([libs_var])=
> 
> Worse, broken on RHEL 5, where autoconf 2.59 lacks m4_expand:
> 
> ./configure: line 90263: syntax error near unexpected token `with_audit=no'
> ./configure: line 90263: `      m4_expand(with_audit=no)'

Oh, I got rid of all the m4_expand() bits quoted above, but missed
some other usages

Daniel
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