obsolete macros in running build.sh

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Hi,
when I want to install modsecurity 3.0.12, by running build.sh these
warnings are displayed: warning: The macro `AC_TRY_LINK' is obsolete.
warning: The macro `AC_HEADER_STDC' is obsolete
warning: AC_PROG_LEX without either yywrap or noyywrap is obsolete
warning: The macro `AC_TRY_COMPILE' is obsolete

the warnings remain after running "autoupdate".
the version of "autoconf" is 2.71-2 (on ubuntu 22.04).

how can I resolve it?

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<div dir=3D"ltr"><div>Hi,</div><div>when I want to install modsecurity 3.0.=
12, by running build.sh these warnings are displayed: warning: The macro `A=
C_TRY_LINK&#39; is obsolete.</div><div>warning: The macro `AC_HEADER_STDC&#=
39; is obsolete</div><div>warning: AC_PROG_LEX without either yywrap or noy=
ywrap is obsolete</div><div>warning: The macro `AC_TRY_COMPILE&#39; is obso=
lete</div><div><br></div><div>the warnings remain after running &quot;autou=
pdate&quot;.</div><div>the version of &quot;autoconf&quot; is 2.71-2 (on ub=
untu 22.04).</div><div><br></div><div>how can I resolve it?<br></div><div><=
br></div></div>

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