1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/arm/preconfigure b/sysdeps/arm/preconfigure
new file mode 100644
index 0000000000..b3124edae2
--- /dev/null
+++ b/sysdeps/arm/preconfigure
@@ -0,0 +1,63 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local preconfigure fragment for sysdeps/arm
+
+case "$machine" in
+arm*)
+  case $config_os in
+  linux-gnueabi*)
+    # If the compiler enables unwind tables by default, this causes
+    # problems with undefined symbols in -nostdlib link tests.  To
+    # avoid this, add -fno-unwind-tables here and remove it in
+    # sysdeps/unix/sysv/linux/arm/configure.ac after those tests have
+    # been run.
+    if test "${CFLAGS+set}" != "set"; then
+      CFLAGS="-g -O2"
+    fi
+    CFLAGS="$CFLAGS -fno-unwind-tables"
+    ;;
+  linux*)
+    as_fn_error $? "Old ABI no longer supported" "$LINENO" 5
+    ;;
+  esac
+
+  base_machine=arm
+  # Lets ask the compiler which ARM family we've got
+  # Unfortunately it doesn't define any flags for implementations
+  # that you might pass to -mcpu or -mtune
+  # Note if you add patterns here you must ensure that
+  # an appropriate directory exists in sysdeps/arm
+  archcppflag=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
+    sed -n 's/^#define \(__ARM_ARCH_[0-9].*__\) .*$/\1/p'`
+
+  case "x$archcppflag" in
+  x__ARM_ARCH_89*__)
+    machine=armv7
+    { $as_echo "$as_me:${as_lineno-$LINENO}: Found compiler is configured for something newer than v7 - using v7" >&5
+$as_echo "$as_me: Found compiler is configured for something newer than v7 - using v7" >&6;}
+    ;;
+
+  x__ARM_ARCH_7A__)
+    machine=armv7
+    { $as_echo "$as_me:${as_lineno-$LINENO}: Found compiler is configured for $machine" >&5
+$as_echo "$as_me: Found compiler is configured for $machine" >&6;}
+    ;;
+
+  x__ARM_ARCH_6T2__)
+    machine=armv6t2
+    { $as_echo "$as_me:${as_lineno-$LINENO}: Found compiler is configured for $machine" >&5
+$as_echo "$as_me: Found compiler is configured for $machine" >&6;}
+    ;;
+  x__ARM_ARCH_6*__)
+    machine=armv6
+    { $as_echo "$as_me:${as_lineno-$LINENO}: Found compiler is configured for $machine" >&5
+$as_echo "$as_me: Found compiler is configured for $machine" >&6;}
+    ;;
+  *)
+    machine=arm
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: arm/preconfigure: Did not find ARM architecture type; using default" >&5
+$as_echo "$as_me: WARNING: arm/preconfigure: Did not find ARM architecture type; using default" >&2;}
+    ;;
+  esac
+
+  machine=arm/$machine
+esac