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-rw-r--r--sysdeps/mach/hurd/configure.in4
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/configure.in b/sysdeps/mach/hurd/configure.in
index 29bb7e07b9..7daa188713 100644
--- a/sysdeps/mach/hurd/configure.in
+++ b/sysdeps/mach/hurd/configure.in
@@ -7,3 +7,7 @@ DEFINES="$DEFINES -D_LIBC_REENTRANT"
# Don't bother trying to generate any glue code to be compatible with the
# existing system library, because we are the only system library.
inhibit_glue=yes
+
+if test "x$prefix" != x; then
+ AC_MSG_WARN([--prefix= (empty) is required for GNU/Hurd to work normally])
+fi