[PATCH] libstdc++: Check if getent is available in git config script [PR111359]

[Jonathan Wakely via Gcc-patches]

Tested x86_64-linux, powerpc-aix, and minimally tested on macOS 12.6
(darwin 21.6.0).

OK for trunk?

-- >8 --

contrib/ChangeLog:

        PR other/111359
        * gcc-git-customization.sh: Check for getent before using it.
        Use id on macOS.
---
 contrib/gcc-git-customization.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contrib/gcc-git-customization.sh b/contrib/gcc-git-customization.sh
index 914d868f7bd..2e173e859d7 100755
--- a/contrib/gcc-git-customization.sh
+++ b/contrib/gcc-git-customization.sh
@@ -46,7 +46,11 @@ set_email=$(git config --get "user.email")
 if [ "x$set_user" = "x" ]
 then
     # Try to guess the user's name by looking it up in the password file
-    new_user=$(getent passwd $(whoami) | awk -F: '{ print $5 }')
+    if type getent >/dev/null 2>&1; then
+      new_user=$(getent passwd $(whoami) | awk -F: '{ print $5 }')
+    elif [ $(uname -s) = Darwin ]; then
+      new_user=$(id -F 2>/dev/null)
+    fi
     if [ "x$new_user" = "x" ]
     then
        new_user="(no default)"
-- 
2.41.0