improve alignment autoconf test (#1129)
Replace the deprecated AC_TRY_RUN with AC_RUN_IFELSE. Also, standardize the
variable name and allow for caching of the result.
diff --git a/configure b/configure
index 87504d2..ac16ce7 100755
--- a/configure
+++ b/configure
@@ -784,6 +784,7 @@
docdir
oldincludedir
includedir
+runstatedir
localstatedir
sharedstatedir
sysconfdir
@@ -894,6 +895,7 @@
sysconfdir='${prefix}/etc'
sharedstatedir='${prefix}/com'
localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
includedir='${prefix}/include'
oldincludedir='/usr/include'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1146,6 +1148,15 @@
| -silent | --silent | --silen | --sile | --sil)
silent=yes ;;
+ -runstatedir | --runstatedir | --runstatedi | --runstated \
+ | --runstate | --runstat | --runsta | --runst | --runs \
+ | --run | --ru | --r)
+ ac_prev=runstatedir ;;
+ -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+ | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+ | --run=* | --ru=* | --r=*)
+ runstatedir=$ac_optarg ;;
+
-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
ac_prev=sbindir ;;
-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1283,7 +1294,7 @@
for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
datadir sysconfdir sharedstatedir localstatedir includedir \
oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
- libdir localedir mandir
+ libdir localedir mandir runstatedir
do
eval ac_val=\$$ac_var
# Remove trailing slashes.
@@ -1436,6 +1447,7 @@
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
+ --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
--libdir=DIR object code libraries [EPREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--oldincludedir=DIR C header files for non-gcc [/usr/include]
@@ -9738,8 +9750,11 @@
# check for systems that require aligned memory access
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking aligned memory access is required" >&5
$as_echo_n "checking aligned memory access is required... " >&6; }
-if test "$cross_compiling" = yes; then :
- aligned_required=yes
+if ${ac_cv_aligned_required+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ ac_cv_aligned_required=yes
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
@@ -9756,26 +9771,26 @@
return 1;
return 0;
}
-
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
- aligned_required=no
+ ac_cv_aligned_required=no
else
- aligned_required=yes
+ ac_cv_aligned_required=yes
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
-if test "$aligned_required" = yes ; then
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_aligned_required" >&5
+$as_echo "$ac_cv_aligned_required" >&6; }
+if test "$ac_cv_aligned_required" = yes ; then
$as_echo "#define HAVE_ALIGNED_REQUIRED 1" >>confdefs.h
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $aligned_required" >&5
-$as_echo "$aligned_required" >&6; }
-
# str, bytes and memoryview hash algorithm