Re: Android port

[Po Lu <luangruo@yahoo.com>]

Eli Zaretskii <eliz@gnu.org> writes:

> Then I don't think I understand this, since (a) MinGW64 which Angelo
> uses does have asprintf, and (b) we could use the configure variable
> that records the existence of asprintf to override that, like we do
> with other ac_cv_func_* variables.  But for some reason you didn't use
> that variable (or any similar one) in your proposed patch, why?

That's because my patch was an addendum to changes installed on the
feature/android branch months ago.  The diff between mingw-cfg.site on
the branch and on master is more illustrative:

diff --git a/nt/mingw-cfg.site b/nt/mingw-cfg.site
index 425eaace30d..f78ee525bf1 100644
--- a/nt/mingw-cfg.site
+++ b/nt/mingw-cfg.site
@@ -173,3 +173,21 @@ gl_cv_func_nanosleep=yes
 # Suppress configure-time diagnostic from unnecessary libxattr check,
 # as xattr will not be supported here.
 enable_xattr=no
+# Don't build gnulib printf either.
+gl_cv_func_printf_sizes_c99=yes
+gl_cv_func_printf_sizes_c23=yes
+gl_cv_func_printf_long_double=yes
+gl_cv_func_printf_infinite_long_double=yes
+gl_cv_func_printf_directive_a=yes
+gl_cv_func_printf_directive_b=yes
+gl_cv_func_printf_directive_f=yes
+gl_cv_func_printf_directive_n=yes
+gl_cv_func_printf_directive_ls=yes
+gl_cv_func_printf_directive_lc=yes
+gl_cv_func_printf_positions=yes
+gl_cv_func_printf_flag_grouping=yes
+gl_cv_func_printf_flag_leftadjust=yes
+gl_cv_func_printf_flag_zero=yes
+gl_cv_func_printf_precision=yes
+gl_cv_func_printf_enomem=yes
+ac_cv_func_vasprintf=yes

Both the check for vasprintf (Gnulib eschews testing for asprintf, since
asprintf is never present where vasprintf is not) and the checks for
printf features are overridden, because Gnulib also tries to replace
vasprintf if it discovers that the conventional printf functions will
need to be replaced.