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-rw-r--r--config/acx.m49
1 files changed, 7 insertions, 2 deletions
diff --git a/config/acx.m4 b/config/acx.m4
index d4a583d..6d3e6d5 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -76,8 +76,13 @@ AC_DEFUN([GCC_TOPLEV_SUBDIRS],
AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl
# Prefix 'build-' so this never conflicts with target_subdir.
build_subdir="build-${build_noncanonical}"
-# Not really a subdirectory, but here for completeness.
-host_subdir=.
+# --srcdir=. covers the toplevel, while "test -d" covers the subdirectories
+if ( test $srcdir = . && test -d gcc ) \
+ || test -d $srcdir/../host-${host_noncanonical}; then
+ host_subdir="host-${host_noncanonical}"
+else
+ host_subdir=.
+fi
# No prefix.
target_subdir=${target_noncanonical}
AC_SUBST([build_subdir]) []dnl