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-rw-r--r--sysdeps/arm/armv7/configure.ac12
1 files changed, 12 insertions, 0 deletions
diff --git a/sysdeps/arm/armv7/configure.ac b/sysdeps/arm/armv7/configure.ac
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+++ b/sysdeps/arm/armv7/configure.ac
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+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/arm/armv7.
+
+# We need binutils 2.21 to ensure that NEON alignments are assembled correctly.
+libc_cv_arm_as_version_ok=yes
+AC_CHECK_PROG_VER(AS, $AS, --version,
+                  [GNU assembler.* \([0-9]*\.[0-9.]*\)],
+                  [2.1[0-9][0-9]*|2.2[1-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], libc_cv_arm_as_version_ok=no)
+
+if test $libc_cv_arm_as_version_ok != yes; then
+  AC_MSG_ERROR([as version too old, at least 2.21 is required])
+fi