Fix build with GNU Make 4.3:

https://github.com/Aegisub/Aegisub/issues/171

Patch taken from upstream:

https://github.com/Aegisub/Aegisub/commit/6bd3f4c26b8fc1f76a8b797fcee11e7611d59a39

diff --git a/Makefile.target b/Makefile.target
--- a/Makefile.target
+++ b/Makefile.target
@@ -112,7 +112,7 @@ POST_FLAGS = $($@_FLAGS) -c -o $@ $<
 # Libraries contain all object files they depend on (but they may depend on other files)
 # Not using libtool on OS X because it has an unsilenceable warning about a
 # compatibility issue with BSD 4.3 (wtf)
-lib%.a: $$($$*_OBJ)
+lib%.a: $$($$(*F)_OBJ)
 	@$(BIN_MKDIR_P) $(dir $@)
 	$(BIN_AR) cru $@ $(filter %.o,$^)
 	$(BIN_RANLIB) $@
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17:27:21 +0100'>2024-01-05</span></td><td><a href='/guix/commit/nix?id=d5724111ea2a8f5312b47fe9aae2bc74278c127e'>daemon: Change default ‘timeout’ and ‘max-silent-time’ values.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-12-17 01:00:00 +0100'>2023-12-17</span></td><td><a href='/guix/commit/nix?id=892ec53b7eedf998afa149b9cdd169f0cab8f41d'>daemon: Fix my own whitespace errors.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-12-10 01:00:00 +0100'>2023-12-10</span></td><td><a href='/guix/commit/nix?id=d993ed43b2bae8717437aa27d9d33fd223a6411f'>daemon: Sacrifice builders on OOM.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-12-11 23:18:53 +0100'>2023-12-11</span></td><td><a href='/guix/commit/nix?id=1e47148f46e31eb99ce8ec7bc12232cf50d0ebec'>daemon: Implement ‘substitute-urls’ RPC.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-12-04 22:26:36 +0100'>2023-12-04</span></td><td><a href='/guix/commit/nix?id=d83d4488da5c3bb65867bffa2b8587a7c7b056cc'>daemon: Simplify “empty status” substitute error message.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-24 02:00:00 +0200'>2023-09-24</span></td><td><a href='/guix/commit/nix?id=0500af5556307d0a4c14a23864e9e4bccd2643d7'>Revert "build: Add missing guix-gc.timer file to binary tarball."</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-09-26 17:36:58 +0200'>2023-09-26</span></td><td><a href='/guix/commit/nix?id=95f21231352b66f92c466cb30f2258291e854f2f'>daemon: Add “git-download” built-in builder.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-09 18:47:35 +0200'>2023-09-09</span></td><td><a href='/guix/commit/nix?id=cd469932758bf2bec1ff9c82aeb373e18730d0c4'>daemon: Fix build with GCC 13.</a><span class='msg-avail'>...</span></td><td>Sören Tempel</td></tr>
<tr><td><span title='2023-08-31 23:31:49 -0400'>2023-08-31</span></td><td><a href='/guix/commit/nix?id=69f6edc1a8596d2cb4c67e0435d35633af6f3cbc'>build: Add missing guix-gc.timer file to binary tarball.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-01-09 17:40:54 +0100'>2023-01-09</span></td><td><a href='/guix/commit/nix?id=407175a1d0e29f45639e7f28a531b3981cd20085'>daemon: Improve error message for wrong hash sizes.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-12-18 01:16:47 +0100'>2022-12-18</span></td><td><a href='/guix/commit/nix?id=2d4d26769d6a3be1b21302b0bb2bd099fd55ccf8'>daemon: Make "opening file" error messages distinguishable.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-10-17 09:37:27 +0200'>2022-10-17</span></td><td><a href='/guix/commit/nix?id=eec920ba93ecb086366576e31b785962fbaf81c2'>Revert "nix: Guard against removing temporary roots of living processes."</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-10-07 16:54:20 -0400'>2022-10-07</span></td><td><a href='/guix/commit/nix?id=bb0beaecdee1a2315a1269b1746d238c8ab0e699'>nix: Guard against removing temporary roots of living processes.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-09-11 16:43:30 +0200'>2022-09-11</span></td><td><a href='/guix/commit/nix?id=4b32f87e9adf91d5d94287562d8844727d47a07b'>daemon: Remove unused function findOutput.</a><span class='msg-avail'>...</span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2022-09-11 16:43:30 +0200'>2022-09-11</span></td><td><a href='/guix/commit/nix?id=93032586df6b925e1ed9102dc3a77aa626aa60d3'>daemon: Remove unused function exportPaths.</a><span class='msg-avail'>...</span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2022-09-11 16:43:30 +0200'>2022-09-11</span></td><td><a href='/guix/commit/nix?id=1c5f5d6d8cb3bd42ed436e31366a328598165734'>daemon: Remove unused function openStore.</a><span class='msg-avail'>...</span></td><td>Maxime Devos</td></tr>