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-rw-r--r--sysdeps/mach/Subdirs10
1 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/mach/Subdirs b/sysdeps/mach/Subdirs
index fc6ac35d83..24fa4a3c98 100644
--- a/sysdeps/mach/Subdirs
+++ b/sysdeps/mach/Subdirs
@@ -1 +1,9 @@
-mach
+# This file says that the mach subdirectory should appear before all others.
+# The mach and hurd subdirectories have many generated header files which
+# much of the rest of the library depends on, so it is best to build them
+# first (and mach before hurd, at that).  The before-compile additions in
+# sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
+# not to exist when making in other directories, but it will be slower that
+# way with more somewhat expensive `make' invocations.
+
+first mach