diff --git a/gcc/config/alpha/t-linux b/gcc/config/alpha/t-linux
new file mode 100644
index 00000000000..e4c9fd49261
--- /dev/null
+++ b/gcc/config/alpha/t-linux
@@ -0,0 +1,5 @@
+# Do not build libgcc1. Let gcc generate those functions. The Linux
+# C library can handle them.
+LIBGCC1 = 
+CROSS_LIBGCC1 =
+LIBGCC1_TEST =
diff --git a/gcc/config/sparc/t-linux b/gcc/config/sparc/t-linux
new file mode 100644
index 00000000000..5a4690eab1f
--- /dev/null
+++ b/gcc/config/sparc/t-linux
@@ -0,0 +1,6 @@
+LIBGCC1 =
+CROSS_LIBGCC1 =
+
+# We don't want to build .umul, etc., because Linux provides them,
+# which means that libgcc1-test will fail for cross-compiler.
+LIBGCC1_TEST =