Support identifying msvc dependency prefix with a path starting with a backslash
@@ -464,8 +464,13 @@ int dummy;
# different locales have different messages with a different
# number of colons. Match up to the the drive name 'd:\'.
# When used in cross compilation, the path separator is a
- # forward slash rather than a backslash so handle both.
- matchre = re.compile(rb"^(.*\s)([a-zA-Z]:\\|\/).*stdio.h$")
+ # forward slash rather than a backslash so handle both; i.e.
+ # the path is /MyDir/include/stdio.h.
+ # With certain cross compilation wrappings of MSVC, the paths
+ # use backslashes, but without the leading drive name, so
+ # allow the path to start with any path separator, i.e.
+ # \MyDir\include\stdio.h.
+ matchre = re.compile(rb"^(.*\s)([a-zA-Z]:\\|[\\\/]).*stdio.h$")
def detect_prefix(out):
for line in re.split(rb'\r?\n', out):
