Land #604, Get __STRICT_ALIGNMENT from machine/endian.h

2 files changed, 11 insertions, 14 deletions

diff --git a/configure.ac b/configure.ac
index 888ca19..75b88fe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,26 +75,12 @@ AC_ARG_ENABLE([tests],
        [enable_tests="yes"])
 AM_CONDITIONAL([ENABLE_TESTS], [test "x$enable_tests" = xyes])
 
-# Add CPU-specific alignment flags
-old_cflags=$CFLAGS
-CFLAGS="$CFLAGS -I$srcdir/include"
-AC_MSG_CHECKING([if BSWAP4 builds without __STRICT_ALIGNMENT])
-AC_TRY_COMPILE([#include "$srcdir/crypto/modes/modes_lcl.h"],
-               [int a = 0; BSWAP4(a);],
-               AC_MSG_RESULT([yes])
-               BSWAP4=yes,
-               AC_MSG_RESULT([no])
-               BSWAP4=no)
-CFLAGS="$old_cflags"
-
 AS_CASE([$host_cpu],
-        [*sparc*], [CPPFLAGS="$CPPFLAGS -D__STRICT_ALIGNMENT"],
         [*arm*], [host_cpu=arm],
         [*amd64*], [host_cpu=x86_64 HOSTARCH=intel],
         [i?86], [HOSTARCH=intel],
         [x86_64], [HOSTARCH=intel]
 )
-AS_IF([test "x$BSWAP4" = "xyes" -a "$host_cpu" = "arm" ],,CPPFLAGS="$CPPFLAGS -D__STRICT_ALIGNMENT")
 AM_CONDITIONAL([HOST_CPU_IS_INTEL], [test "x$HOSTARCH" = "xintel"])
 
 AC_MSG_CHECKING([if .gnu.warning accepts long strings])
diff --git a/include/compat/machine/endian.h b/include/compat/machine/endian.h
index 43dac8f..4dcb60d 100644
--- a/include/compat/machine/endian.h
+++ b/include/compat/machine/endian.h
@@ -37,4 +37,15 @@
 
 #endif
 
+#ifndef __STRICT_ALIGNMENT
+#define __STRICT_ALIGNMENT
+#if defined(__i386)    || defined(__i386__)    || \
+    defined(__x86_64)  || defined(__x86_64__)  || \
+    defined(__s390__)  || defined(__s390x__)   || \
+    defined(__aarch64__)                       || \
+    ((defined(__arm__) || defined(__arm)) && __ARM_ARCH >= 6)
+#undef __STRICT_ALIGNMENT
+#endif
+#endif
+
 #endif