┌──(burster㉿liza)-[~/Development]
└─$ tar xzf scangearmp2.tar.gz

┌──(burster㉿liza)-[~/Development]
└─$ cd scangearmp2

┌──(burster㉿liza)-[~/Development/scangearmp2]
└─$ makepkg
==> Making package: scangearmp2 4.30-1 (Wed Jun 15 20:16:20 2022)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
-> Downloading scangearmp2-source-4.30-1.tar.gz...
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100  343k  100  343k    0     0  3148k      0 --:--:-- --:--:-- --:--:-- 3150k
-> Found scangearmp2.desktop
-> Found libusb.patch
==> Validating source files with sha256sums...
scangearmp2-source-4.30-1.tar.gz ... Passed
scangearmp2.desktop ... Passed
libusb.patch ... Passed
==> Extracting sources...
-> Extracting scangearmp2-source-4.30-1.tar.gz with bsdtar
==> Starting prepare()...
/home/burster/Development/scangearmp2/PKGBUILD: line 25: ../libusb.patch: No such file or directory
==> ERROR: A failure occurred in prepare().
Aborting...

┌──(burster㉿liza)-[~/Development/scangearmp2]
└─sed -i "s/..\\/libusb.patch/libusb.patch/" PKGBUILD

┌──(burster㉿liza)-[~/Development/scangearmp2]
└─$ makepkg
==> Making package: scangearmp2 4.30-1 (Wed Jun 15 20:16:36 2022)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
-> Found scangearmp2-source-4.30-1.tar.gz
-> Found scangearmp2.desktop
-> Found libusb.patch
==> Validating source files with sha256sums...
scangearmp2-source-4.30-1.tar.gz ... Passed
scangearmp2.desktop ... Passed
libusb.patch ... Passed
==> Extracting sources...
-> Extracting scangearmp2-source-4.30-1.tar.gz with bsdtar
==> Starting prepare()...
patching file scangearmp2-source-4.30-1/scangearmp2/src/canon_mfp_tools.c
==> Starting build()...
/tmp/makepkg/scangearmp2/src/scangearmp2-source-4.30-1/scangearmp2 /tmp/makepkg/scangearmp2/src/scangearmp2-source-4.30-1
processing .
Creating ./aclocal.m4 ...
Running glib-gettextize...  Ignore non-fatal messages.
Copying file po/Makefile.in.in

Please add the files
codeset.m4 gettext.m4 glibc21.m4 iconv.m4 isc-posix.m4 lcmessage.m4
progtest.m4
from the /usr/share/aclocal directory to your autoconf macro directory
or directly to your aclocal.m4 file.
You will also need config.guess and config.sub, which you can get from
ftp://ftp.gnu.org/pub/gnu/config/.

Making ./aclocal.m4 writable ...
Running libtoolize...
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: You should add the contents of the following files to 'aclocal.m4':
libtoolize:   '/usr/share/aclocal/libtool.m4'
libtoolize:   '/usr/share/aclocal/ltoptions.m4'
libtoolize:   '/usr/share/aclocal/ltsugar.m4'
libtoolize:   '/usr/share/aclocal/ltversion.m4'
libtoolize:   '/usr/share/aclocal/lt~obsolete.m4'
libtoolize: Consider adding 'AC_CONFIG_MACRO_DIRS([m4])' to configure.in,
libtoolize: and rerunning libtoolize and aclocal.
libtoolize: Consider adding '-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
libtoolize: 'AC_PROG_RANLIB' is rendered obsolete by 'LT_INIT'
Running aclocal  ...
aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in'
Running autoheader...
autoheader: warning: autoconf input should be named 'configure.ac', not 'configure.in'
autoheader: warning: WARNING: Using auxiliary files such as 'acconfig.h', 'config.h.bot'
autoheader: WARNING: and 'config.h.top', to define templates for 'config.h.in'
autoheader: WARNING: is deprecated and discouraged.
autoheader:
autoheader: WARNING: Using the third argument of 'AC_DEFINE_UNQUOTED' and
autoheader: WARNING: 'AC_DEFINE' allows one to define a template without
autoheader: WARNING: 'acconfig.h':
autoheader:
autoheader: WARNING:   AC_DEFINE([NEED_FUNC_MAIN], 1,
autoheader:             [Define if a function 'main' is needed.])
autoheader:
autoheader: WARNING: More sophisticated templates can also be produced, see the
autoheader: WARNING: documentation.
Running automake --gnu  ...
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
configure.in:15: warning: AM_INIT_AUTOMAKE: two- and three-arguments forms are deprecated.  For more info, see:
configure.in:15: https://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_005fINIT_005fAUTOMAKE-invocation
configure.in:17: installing './compile'
configure.in:17: installing './config.guess'
configure.in:17: installing './config.sub'