dxfread (and DISABLED_DXF/WRITE source inclusion issues) #3798

Job	Run time
linux-cmake	6s
linux (CFLAGS="-O0 -fno-omit-frame-pointer -fsanitize=address -fno-var-tracking" --disable-bindings)	2m 39s
linux (CC="clang")	3m 11s
macOS	13m 26s
mingw	27m 19s
linux (--enable-release)	3m 13s
mingw-cmake	32s
linux (--enable-gcov --disable-bindings)	3m 17s
mips32-big-endian	17m 39s
linux (--disable-write)	2m 56s
ppc64-big-endian	7m 10s
linux (CFLAGS="-O2 -m32" --disable-bindings)	3m 13s
vs2019	28s
linux (CFLAGS="-O2 -fno-omit-frame-pointer -fsanitize=undefined -fno-var-tracking" --disable-bind...	3m 14s
vs2019-ninja	1m 37s
	1h 30m 0s

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