[gcc r12-6001] configure: Account CXXFLAGS in gcc-plugin.m4.

[gcc r12-6001] configure: Account CXXFLAGS in gcc-plugin.m4.

[Iain D Sandoe]

https://gcc.gnu.org/g:3e714cc55efe5e402a7db6703dbfd70baa53dfbe

commit r12-6001-g3e714cc55efe5e402a7db6703dbfd70baa53dfbe
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Wed Dec 8 20:58:34 2021 +0000

    configure: Account CXXFLAGS in gcc-plugin.m4.
    
    We now use a C++ compiler so that we need to process
    CXXFLAGS as well as CFLAGS in the gcc-plugin config
    fragment.
    
    Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
    
    config/ChangeLog:
    
            * gcc-plugin.m4: Save and process CXXFLAGS.
    
    gcc/ChangeLog:
    
            * configure: Regenerate.
    
    libcc1/ChangeLog:
    
            * configure: Regenerate.

Diff:
---
 config/gcc-plugin.m4 | 5 +++++
 gcc/configure        | 5 +++++
 libcc1/configure     | 5 +++++
 3 files changed, 15 insertions(+)

diff --git a/config/gcc-plugin.m4 b/config/gcc-plugin.m4
index 8f278719118..7ee342fe5fe 100644
--- a/config/gcc-plugin.m4
+++ b/config/gcc-plugin.m4
@@ -91,14 +91,18 @@ AC_DEFUN([GCC_ENABLE_PLUGINS],
      # Check that we can build shared objects with -fPIC -shared
      saved_LDFLAGS="$LDFLAGS"
      saved_CFLAGS="$CFLAGS"
+     saved_CXXFLAGS="$CXXFLAGS"
      case "${host}" in
        *-*-darwin*)
 	 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS=`echo $CXXFLAGS | sed s/-mdynamic-no-pic//g`
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
        ;;
        *)
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -fPIC -shared"
        ;;
      esac
@@ -113,6 +117,7 @@ AC_DEFUN([GCC_ENABLE_PLUGINS],
      fi
      LDFLAGS="$saved_LDFLAGS"
      CFLAGS="$saved_CFLAGS"
+     CXXFLAGS="$saved_CXXFLAGS"
 
      # If plugin support had been requested but not available, fail.
      if test x"$enable_plugin" = x"no" ; then
diff --git a/gcc/configure b/gcc/configure
index de20e5d2629..5470987b62f 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -32038,14 +32038,18 @@ fi
      # Check that we can build shared objects with -fPIC -shared
      saved_LDFLAGS="$LDFLAGS"
      saved_CFLAGS="$CFLAGS"
+     saved_CXXFLAGS="$CXXFLAGS"
      case "${host}" in
        *-*-darwin*)
 	 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS=`echo $CXXFLAGS | sed s/-mdynamic-no-pic//g`
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
        ;;
        *)
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -fPIC -shared"
        ;;
      esac
@@ -32077,6 +32081,7 @@ rm -f core conftest.err conftest.$ac_objext \
      fi
      LDFLAGS="$saved_LDFLAGS"
      CFLAGS="$saved_CFLAGS"
+     CXXFLAGS="$saved_CXXFLAGS"
 
      # If plugin support had been requested but not available, fail.
      if test x"$enable_plugin" = x"no" ; then
diff --git a/libcc1/configure b/libcc1/configure
index b198b0b9074..01cfb2806da 100755
--- a/libcc1/configure
+++ b/libcc1/configure
@@ -15141,14 +15141,18 @@ fi
      # Check that we can build shared objects with -fPIC -shared
      saved_LDFLAGS="$LDFLAGS"
      saved_CFLAGS="$CFLAGS"
+     saved_CXXFLAGS="$CXXFLAGS"
      case "${host}" in
        *-*-darwin*)
 	 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS=`echo $CXXFLAGS | sed s/-mdynamic-no-pic//g`
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
        ;;
        *)
 	 CFLAGS="$CFLAGS -fPIC"
+	 CXXFLAGS="$CXXFLAGS -fPIC"
 	 LDFLAGS="$LDFLAGS -fPIC -shared"
        ;;
      esac
@@ -15180,6 +15184,7 @@ rm -f core conftest.err conftest.$ac_objext \
      fi
      LDFLAGS="$saved_LDFLAGS"
      CFLAGS="$saved_CFLAGS"
+     CXXFLAGS="$saved_CXXFLAGS"
 
      # If plugin support had been requested but not available, fail.
      if test x"$enable_plugin" = x"no" ; then