Re: [submission] AX_LIB_V8

[Peter Johansson]

Hi Peter,

On 12/25/09 7:50 AM, Peter Simons wrote:
> Does anyone else have suggestions or opinions regarding that macro?
>
>    
I get a lot of warnings when I autoconf 2.65 on the macro with '-Wall'. 
Most of them are about obsolete macros such as AC_HELP_STRING and 
AC_TRY_COMPILE. IMHO it would be nice if new macros gave no warnings. 
Many people are checking the archive to learn how to write macros.

The use of AC_TRY_RUN is more serious. The modern version, 
AC_RUN_IFELSE, takes a fifth argument about what to do when 
cross-compiling. Here, the fifth argument is left empty, which implies 
configure  will halt with an error message when cross-compiling. I 
wonder if that is on purpose.

These are the warnings I get with -Wall:

configure.ac:5: warning: The macro `AC_HELP_STRING' is obsolete.
configure.ac:5: You should run autoupdate.
../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
v8.m4:28: AX_LIB_V8 is expanded from...
configure.ac:5: the top level
configure.ac:5: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:5: You should run autoupdate.
../../lib/autoconf/general.m4:2581: AC_TRY_COMPILE is expanded from...
configure.ac:5: warning: The macro `AC_TRY_LINK' is obsolete.
configure.ac:5: You should run autoupdate.
../../lib/autoconf/general.m4:2654: AC_TRY_LINK is expanded from...
configure.ac:5: warning: The macro `AC_TRY_RUN' is obsolete.
configure.ac:5: You should run autoupdate.
../../lib/autoconf/general.m4:2731: AC_TRY_RUN is expanded from...
configure.ac:5: warning: AC_RUN_IFELSE called without default to allow 
cross compiling
../../lib/autoconf/general.m4:2715: AC_RUN_IFELSE is expanded from...

Thanks,
Peter