[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/arm/preconfigure.ac b/ap/libc/glibc/glibc-2.22/sysdeps/arm/preconfigure.ac
new file mode 100644
index 0000000..20de5bc
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/arm/preconfigure.ac
@@ -0,0 +1,50 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local preconfigure fragment for sysdeps/arm
+
+case "$machine" in
+arm*)
+ # If the compiler enables unwind tables by default, this causes
+ # problems with undefined symbols in -nostdlib link tests. To
+ # avoid this, add -fno-unwind-tables here and remove it in
+ # sysdeps/arm/configure.ac after those tests have been run.
+ if test "${CFLAGS+set}" != "set"; then
+ CFLAGS="-g -O2"
+ fi
+ CFLAGS="$CFLAGS -fno-unwind-tables"
+
+ base_machine=arm
+ # Lets ask the compiler which ARM family we've got
+ # Unfortunately it doesn't define any flags for implementations
+ # that you might pass to -mcpu or -mtune
+ # Note if you add patterns here you must ensure that
+ # an appropriate directory exists in sysdeps/arm
+ archcppflag=`$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
+ AC_MSG_NOTICE([Found compiler is configured for something newer than v7 - using v7])
+ ;;
+
+ x__ARM_ARCH_7A__)
+ machine=armv7
+ AC_MSG_NOTICE([Found compiler is configured for $machine])
+ ;;
+
+ x__ARM_ARCH_6T2__)
+ machine=armv6t2
+ AC_MSG_NOTICE([Found compiler is configured for $machine])
+ ;;
+ x__ARM_ARCH_6*__)
+ machine=armv6
+ AC_MSG_NOTICE([Found compiler is configured for $machine])
+ ;;
+ *)
+ machine=arm
+ AC_MSG_WARN([arm/preconfigure: Did not find ARM architecture type; using default])
+ ;;
+ esac
+
+ machine=arm/$machine
+esac