> 
> On Thu, 2018-03-01 at 18:28 +0100, Christophe Fergeau wrote:
> > Tests require 'catch' to be installed, one might want to disable them if
> > catch is not available. This patch adds a --disable-tests switch. By
> > default, tests are enabled depending on 'catch' availability.
> > 
> > Signed-off-by: Christophe Fergeau <cferg...@redhat.com>
> > ---
> >  configure.ac    | 21 +++++++++++++++++++--
> >  src/Makefile.am |  3 +++
> >  2 files changed, 22 insertions(+), 2 deletions(-)
> > 
> > diff --git a/configure.ac b/configure.ac
> > index 1bb1f5d..4333c42 100644
> > --- a/configure.ac
> > +++ b/configure.ac
> > @@ -38,8 +38,6 @@ PKG_CHECK_MODULES(XFIXES, xfixes)
> >  
> >  PKG_CHECK_MODULES(JPEG, libjpeg)
> >  
> > -AC_CHECK_HEADER([catch/catch.hpp],,[AC_MSG_ERROR([Could not find Catch
> > dependency header (catch/catch.hpp)])])
> > -
> >  dnl
> >  ===========================================================================
> >  dnl check compiler flags
> >  
> > @@ -50,6 +48,25 @@ LIBVIRT_LINKER_NO_INDIRECT
> >  AC_SUBST(WARN_CFLAGS)
> >  AC_SUBST(WARN_CXXFLAGS)
> >  
> > +dnl
> > =========================================================================
> > +dnl tests
> > +AC_ARG_ENABLE([tests],
> > +              AS_HELP_STRING([--disable-tests=@<:@yes/no@:>@],
> > +                             [Disable tests (they require 'catch' to be
> > installed) @<:@default=auto@:>@]),
> > +                             [],
> > +                             [enable_tests="auto"])
> > +case "$enable_tests" in
> > +  0|no) enable_tests="no" ;;
> > +  1|yes) enable_tests="yes" ;;
> > +  auto) enable_tests="auto" ;;
> > +  *) AC_MSG_ERROR([bad value ${enable_tests} for enable-tests option]) ;;
> > +esac
> > +AS_IF([test "x$enable_tests" != "xno"],
> > +      [AC_CHECK_HEADER([catch/catch.hpp],have_check="yes",)])
> > +AS_IF([test "x$enable_tests" = "xyes" && test "x$have_check" != "xyes"],
> > +      [AC_MSG_ERROR([Could not find Catch dependency header
> > (catch/catch.hpp)])])
> > +AM_CONDITIONAL([ENABLE_TESTS], [test "x$have_check" = "xyes"])
> > +
> >  AC_DEFINE_DIR([BINDIR], [bindir], [Where binaries are installed.])
> >  
> >  AC_OUTPUT([
> > diff --git a/src/Makefile.am b/src/Makefile.am
> > index 857d763..606f51a 100644
> > --- a/src/Makefile.am
> > +++ b/src/Makefile.am
> > @@ -4,7 +4,10 @@
> >  # Copyright 2016-2017 Red Hat Inc. All rights reserved.
> >  
> >  NULL =
> > +
> > +if ENABLE_TESTS
> >  SUBDIRS = . unittests
> > +endif
> >  
> >  AM_CPPFLAGS = \
> >     -DSPICE_STREAMING_AGENT_PROGRAM \
> 
> Looks fine, lets merge this :)
> 
> Acked-by: Lukáš Hrázký <lhra...@redhat.com>

As a follow up I would add an explicit --enable-tests to the SPEC file.
Maybe as the default is "auto" and not "yes" we want a --enable-tests in the 
documentation
string.

Frediano
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