Fixes errors like this with Cygwin in a crlf environment even with
SHELLOPTS=igncr:
ps.h:2:1: error: missing terminating " character
2 | "%%BeginProlog ",
| ^~~~~~~~~~~~~~
Although not shown in the error message, this line actually contained
a carriage return after %%BeginProlog:
"%%BeginProlog\r",
gvrender_core_ps.o gvrender_core_ps.lo: ps.h
ps.h : $(srcdir)/ps.txt
- $(AWK) -f $(top_srcdir)/awk/stringize.awk $(srcdir)/ps.txt > ps.h
+ $(AWK) -v RS="\r*\n" -f $(top_srcdir)/awk/stringize.awk $(srcdir)/ps.txt > ps.h
if WITH_WIN32
libgvplugin_core_la_LDFLAGS += -no-undefined