Building on Debian sid complains about various deprecated macros in `configure.ac`:
```
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:24: warning: The macro `AC_CANONICAL_SYSTEM' is obsolete.
configure.ac:24: You should run autoupdate.
./lib/autoconf/general.m4:2081: AC_CANONICAL_SYSTEM is expanded from...
configure.ac:24: the top level
configure.ac:59: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:59: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
m4/visibility.m4:23: gl_VISIBILITY is expanded from...
configure.ac:59: the top level
configure.ac:110: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:110: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:110: the top level
configure.ac:123: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:123: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:123: the top level
configure.ac:132: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:132: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:132: the top level
configure.ac:148: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:148: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:148: the top level
configure.ac:166: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:166: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:166: the top level
configure.ac:31: installing './compile'
configure.ac:43: installing './missing'
```
Deprecated configure macros
This is a GitHub Issue
repo:libde265
owner:strukturag
Title : Deprecated configure macros
Issue date:

--- start body ---
Building on Debian sid complains about various deprecated macros in `configure.ac`:
```
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:24: warning: The macro `AC_CANONICAL_SYSTEM' is obsolete.
configure.ac:24: You should run autoupdate.
./lib/autoconf/general.m4:2081: AC_CANONICAL_SYSTEM is expanded from...
configure.ac:24: the top level
configure.ac:59: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:59: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
m4/visibility.m4:23: gl_VISIBILITY is expanded from...
configure.ac:59: the top level
configure.ac:110: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:110: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:110: the top level
configure.ac:123: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:123: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:123: the top level
configure.ac:132: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:132: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:132: the top level
configure.ac:148: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:148: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:148: the top level
configure.ac:166: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:166: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:166: the top level
configure.ac:31: installing './compile'
configure.ac:43: installing './missing'
```
--- end body ---
