Initial commit

Makefile

+all:
+	tar xf SDL2-2.0.22.tar.gz
+	patch -Np1 -d SDL2-2.0.22 < SDL2-2.0.22-fix_configure.patch
+	cd SDL2-2.0.22 && ./configure --prefix=/usr
+	$(MAKE) -C SDL2-2.0.22
+	$(MAKE) -C SDL2-2.0.22 install
+	rm -v /usr/lib/libSDL2*.a
+	rm -rf SDL2-2.0.22

SDL2-2.0.22-fix_configure.patch

+diff -uNr SDL2-2.0.22/configure SDL2-2.0.22-fix_configure/configure
+--- SDL2-2.0.22/configure	2022-04-09 10:49:19.000000000 +0930
++++ SDL2-2.0.22-fix_configure/configure	2022-04-30 22:44:52.651583510 +0930
+@@ -20480,7 +20480,7 @@
+     have_gcc_declaration_after_statement=no
+ 
+     save_CFLAGS="$CFLAGS"
+-    CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
++    CFLAGS="$save_CFLAGS -Wdeclaration-after-statement"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ /* end confdefs.h.  */
+ 
+@@ -20503,7 +20503,7 @@
+     CFLAGS="$save_CFLAGS"
+ 
+     if test x$have_gcc_declaration_after_statement = xyes; then
+-        EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
++        EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement"
+     fi
+ }
+