On Mon, Aug 19, 2013 at 10:10:20PM +0200, Stefan Agner wrote: > The SoC specific code is in subdirectories which leads to warnings in > newer > automake versions. The option subdir-objects prevents those warnings. > > Signed-off-by: Stefan Agner <[email protected]> > --- > > Sorry, was in vacation. I could not reproduce the message Thierry sees > on > my automake 1.14 installation, however, the option make sense as far as > I > understand its meaning.
Yes, automake 1.14 doesn't warn about it, presumably because it makes sure to select AM_PROG_CC_C_O if subdir-objects is enabled. I can reproduce the warning by downgrading to 1.13.4, though. > configure.ac | 1 + > src/Makefile.am | 2 ++ > 2 files changed, 3 insertions(+) > > diff --git a/configure.ac b/configure.ac > index ccd0a55..9b83a21 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -10,6 +10,7 @@ AC_CONFIG_HEADERS([config.h]) > # Checks for programs. > AC_PROG_CXX > AC_PROG_CC > +AM_PROG_CC_C_O > PKG_PROG_PKG_CONFIG > > # Checks for libraries. > diff --git a/src/Makefile.am b/src/Makefile.am > index 6fcc0d8..6fecfc7 100644 > --- a/src/Makefile.am > +++ b/src/Makefile.am > @@ -1,3 +1,5 @@ > +AUTOMAKE_OPTIONS = subdir-objects > + I don't remember if I mentioned it before, but I've seen a lot of projects that keep these options in the configure.ac file (in the AM_INIT_AUTOMAKE command). The GNU documentation isn't specific about which variant is preferred, so either way: Reviewed-by: Thierry Reding <[email protected]>
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