[PATCH] Use automake (v3)

[Jon Turney]

On 30/11/2020 10:25, Corinna Vinschen wrote:
> Hi Jon,
> 
> On Nov 24 13:37, Jon Turney wrote:
>> For ease of reviewing, this patch doesn't contain changes to generated
>> files which would be made by running ./autogen.sh.
>>
>> v2:
>> * Include tzmap.h in BUILT_SOURCES
>> * Make per-file flags appear after user-supplied CXXFLAGS, so they can
>> override optimization level.
>> * Correct .o files used to define symbols exported by libm.a
>> * Drop gcrt0.o mistakenly incuded in libgmon.a
>> * Add missing line continuations in GMON_FILES value
>>
>> v3:
>> * use per-file flags for .c compilation
>> * override C{XX,}FLAGS, as they are set on the command line by top-level make
> 
> Running autogen.sh shows a couple of warnings:
> 
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> testsuite/cygrun/Makefile.am:16: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> configure.ac:45: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> automake: warning: redefinition of 'ps' ...
> /usr/share/automake-1.16/am/program.am: ... 'ps$(EXEEXT)' previously defined here
> utils/Makefile.am:15:   while processing program 'ps'
> utils/mingw/Makefile.am:14: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
> 
> Something to worry about?

Thanks for taking a look.

These warnings are expected at the moment.

I plan to clean up INCLUDES -> CPPFLAGS in a future patch

The redefinition of 'ps' is due to a conflict between a target built 
into automake for postscript documentation and an executable we have 
called 'ps'.  I'm not sure how to address that.