[gcc r12-7206] i18n: fix exgettext handling of C++ sources

[Joseph Myers <jsm28@gcc.gnu.org>]

https://gcc.gnu.org/g:434b2caf5d44d58cb48c9588d4b70588f6d5965b

commit r12-7206-g434b2caf5d44d58cb48c9588d4b70588f6d5965b
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Fri Feb 11 23:16:33 2022 +0000

    i18n: fix exgettext handling of C++ sources
    
    The move of source files to .cc names broke most message extraction by
    exgettext because it processed .c files with --language=GCC-source but
    didn't process .cc files that way.  Fix to process files identified as
    C++ that way as well.
    
    Tested with "make gcc.pot".
    
            * exgettext: Also process C++ sources with --language=GCC-source.

Diff:
---
 gcc/po/exgettext | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/po/exgettext b/gcc/po/exgettext
index a69cdacb9bf..95cb0e75554 100644
--- a/gcc/po/exgettext
+++ b/gcc/po/exgettext
@@ -69,6 +69,7 @@ posrcxx=$pwd/$T/po-cxx-sources
 pottmp1=$pwd/$T/tmp1.pot
 pottmp2=$pwd/$T/tmp2.pot
 pottmp3=$pwd/$T/tmp3.pot
+pottmp4=$pwd/$T/tmp4.pot
 pottmp=$pwd/$T/tmp.pot
 
 # Locate files to scan.  We scan the following directories:
@@ -312,8 +313,13 @@ $xgettext --default-domain=$package --directory=$srcdir \
 	  --copyright-holder="Free Software Foundation, Inc." \
 	  --msgid-bugs-address="$BUGURL" \
 	  --language=GCC-source -o $pottmp3
+$xgettext --default-domain=$package --directory=$srcdir \
+	  --add-comments --keyword= `cat $kopt2` --files-from=$posrcxx \
+	  --copyright-holder="Free Software Foundation, Inc." \
+	  --msgid-bugs-address="$BUGURL" \
+	  --language=GCC-source -o $pottmp4
 $xgettext --default-domain=$package \
-	  --add-comments $pottmp1 $pottmp2 $pottmp3 \
+	  --add-comments $pottmp1 $pottmp2 $pottmp3 $pottmp4 \
 	  --copyright-holder="Free Software Foundation, Inc." \
 	  --msgid-bugs-address="$BUGURL" \
 	  --language=PO -o $pottmp