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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<tr><td><span title='2023-02-19 01:00:01 +0100'>2023-02-19</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=1e6ddceb8318d413745ca1c9d91fde01b1e0364b'>gnu: Use HTTPS package home pages wherever possible.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-02-12 08:45:36 +0100'>2023-02-12</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=015777f4c5094d20c2697c633dfe52ff966052a1'>gnu: Add esmini.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2023-02-12 08:45:35 +0100'>2023-02-12</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=4a42167c3cb39645d07cb1a25b4e4e75247b4322'>gnu: Add python-open-simulation-interface.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2023-02-12 08:45:35 +0100'>2023-02-12</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=efee3dd7a175c2e068178cc0b48479a03775c23d'>gnu: Add open-simulation-interface.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2023-01-08 16:29:56 +0100'>2023-01-08</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=e55bc944a94134f7ff2a4ab4a0e8b9a5ac9d46d1'>gnu: Add python-commonroad-route-planner.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2023-01-08 16:29:56 +0100'>2023-01-08</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=86136b4f76e3950124563aea5173a3f78847c3c2'>gnu: Add python-commonroad-io.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2023-01-08 16:27:59 +0100'>2023-01-08</span></td><td><a href='/guix/commit/gnu/packages/simulation.scm?id=59a8de6bad856ee012cd6bc8aaf4d929a6c8e619'>gnu: Add python-commonroad-vehicle-models.</a><span class='msg-avail'>...</span></td><td>Liliana Marie Prikler</td></tr>