[binutils-gdb] binuitils: Check if AR is usable for LTO build

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=44124a46839b3563e448edfd013c6faa6a8b1642

commit 44124a46839b3563e448edfd013c6faa6a8b1642
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Jan 11 16:37:03 2021 -0800

    binuitils: Check if AR is usable for LTO build
    
    Check if AR is usable for LTO build with --enable-pgo-build=lto:
    
    checking for -plugin option... ar: no operation specified
    Failed: ar --plugin /usr/gcc-11.0.0-x32/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/liblto_plugin.so rc
    no
    configure: error: AR with --plugin and rc is required for LTO build
    
    instead of build failure later.
    
            PR binutils/26766
            * configure.ac:
            * configure: Regenerated.

Diff:
---
 ChangeLog    | 6 ++++++
 configure    | 4 ++++
 configure.ac | 4 ++++
 3 files changed, 14 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 81593bc8f85..b9255d643cb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-01-11  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR binutils/26766
+	* configure.ac:
+	* configure: Regenerated.
+
 2021-01-11  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/27173
diff --git a/configure b/configure
index 5437ef12c72..25d2fc48c66 100755
--- a/configure
+++ b/configure
@@ -10241,6 +10241,10 @@ if test -n "$PLUGIN_OPTION"; then
   if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
     RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
   fi
+else
+  if test "$enable_pgo_build" != "no"; then
+    as_fn_error $? "AR with --plugin and rc is required for LTO build" "$LINENO" 5
+  fi
 fi
 
 
diff --git a/configure.ac b/configure.ac
index 9dd51c36e5a..d39019d7093 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3452,6 +3452,10 @@ if test -n "$PLUGIN_OPTION"; then
   if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
     RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
   fi
+else
+  if test "$enable_pgo_build" != "no"; then
+    AC_MSG_ERROR([AR with --plugin and rc is required for LTO build])
+  fi
 fi
 AC_SUBST(AR_PLUGIN_OPTION)
 AC_SUBST(RANLIB_PLUGIN_OPTION)