[PATCH libXaw] config: add AM_PROG_CC_C_O for per-target compilation flags

[Alan Coopersmith]

Gaetan Nadon wrote:
> Per-target compilation flags (libXaw7_la_CFLAGS) are required
> when multiple targets which require different compiler flags,
> are build in the same makefile.
> 
> Automake issues a command with -c and -o flags which not all compilers
> support. The object fles are prefixed with libXaw7_la.
> The macro AM_PROG_CC_C_O must then be used to provide this feature
> on compilers that do not have it. If not, a warning is issued at make time.
> 
> This macros checks for compiler support and if missing, uses a "compile"
> script it generates in the package root directory.
> 
> Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
> ---
>  configure.ac |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index de010a3..ee370dc 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -21,6 +21,7 @@ AC_PROG_CC
>  AC_PROG_LIBTOOL
>  AC_PROG_AWK
>  AC_PROG_SED
> +AM_PROG_CC_C_O
>  
>  # Need to call this explicitly since the first call to PKG_CHECK_MODULES
>  # is in an if statement, and later calls would break if it's skipped.

Reviewed-by: Alan Coopersmith <alan.coopersmith at oracle.com>

-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System