Cygwin builds require this of dependencies pertaining to pattern rules.
On Cygwin, stat("foo") in the absence of a file with that exact name can
locate foo.exe. While GNU make uses stat() for dependencies of ordinary
rules, it uses readdir() to assess dependencies of pattern rules.
Therefore, a pattern rule dependency should match any underlying file
name exactly. Back-patch to 9.4, where the dependency was introduced.
ECPG = ../../preproc/ecpg --regression -I$(srcdir)/../../include -I$(srcdir)
# Files that most or all ecpg preprocessor test outputs depend on
-ECPG_TEST_DEPENDENCIES = ../../preproc/ecpg \
+ECPG_TEST_DEPENDENCIES = ../../preproc/ecpg$(X) \
$(srcdir)/../regression.h \
$(srcdir)/../../include/sqlca.h \
$(srcdir)/../../include/sqlda.h \