Patchwork [3/4] powerpc64le: Require at least POWER8 for powerpc64le

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Submitter Gabriel F T Gomes
Date June 14, 2017, 10:05 p.m.
Message ID <1497477934-26163-4-git-send-email-gftg@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/21030/
State Superseded
Headers show

Comments

Gabriel F T Gomes - June 14, 2017, 10:05 p.m.
Support for powerpc64le requires POWER8 or newer processors.  Builds for
older processors are not tested.  Require at least POWER8 to avoid
unintentional builds.

2017-06-12  Gabriel F. T. Gomes  <gftg@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc64le/configure.ac: Check for POWER8.
	* sysdeps/powerpc/powerpc64le/configure: Update.
---
 sysdeps/powerpc/powerpc64le/configure    | 30 ++++++++++++++++++++++++++++++
 sysdeps/powerpc/powerpc64le/configure.ac | 16 ++++++++++++++++
 2 files changed, 46 insertions(+)

Patch

diff --git a/sysdeps/powerpc/powerpc64le/configure b/sysdeps/powerpc/powerpc64le/configure
index f5f1069..bf17d15 100644
--- a/sysdeps/powerpc/powerpc64le/configure
+++ b/sysdeps/powerpc/powerpc64le/configure
@@ -68,4 +68,34 @@  if test "$libc_cv_compiler_powerpc64le_compiler_ok" != "yes"; then :
   critic_missing="$critic_missing GCC >= 6.2 is required on powerpc64le."
 fi
 
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS $libc_cv_cc_submachine"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the target machine is at least POWER8" >&5
+$as_echo_n "checking if the target machine is at least POWER8... " >&6; }
+if ${libc_cv_target_power8_ok+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#ifndef _ARCH_PWR8
+#error invalid target architecture
+#endif
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_target_power8_ok=yes
+else
+  libc_cv_target_power8_ok=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_target_power8_ok" >&5
+$as_echo "$libc_cv_target_power8_ok" >&6; }
+if test "$libc_cv_target_power8_ok" != "yes"; then :
+  critic_missing="$critic_missing POWER8 or newer is required on powerpc64le."
+fi
+CFLAGS="$OLD_CFLAGS"
+
 test -n "$critic_missing" && as_fn_error $? "*** $critic_missing" "$LINENO" 5
diff --git a/sysdeps/powerpc/powerpc64le/configure.ac b/sysdeps/powerpc/powerpc64le/configure.ac
index 9d8c54c..53d8e12 100644
--- a/sysdeps/powerpc/powerpc64le/configure.ac
+++ b/sysdeps/powerpc/powerpc64le/configure.ac
@@ -14,4 +14,20 @@  AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
 AS_IF([test "$libc_cv_compiler_powerpc64le_compiler_ok" != "yes"],
       [critic_missing="$critic_missing GCC >= 6.2 is required on powerpc64le."])
 
+dnl Require at least POWER8 on powerpc64le
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS $libc_cv_cc_submachine"
+AC_CACHE_CHECK([if the target machine is at least POWER8],
+	       libc_cv_target_power8_ok, [
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#ifndef _ARCH_PWR8
+#error invalid target architecture
+#endif
+]])],
+	       [libc_cv_target_power8_ok=yes],
+	       [libc_cv_target_power8_ok=no])])
+AS_IF([test "$libc_cv_target_power8_ok" != "yes"],
+      [critic_missing="$critic_missing POWER8 or newer is required on powerpc64le."])
+CFLAGS="$OLD_CFLAGS"
+
 test -n "$critic_missing" && AC_MSG_ERROR([*** $critic_missing])