From 803d5e3c4c71faa1dbcc166e6925ce3748249bad Mon Sep 17 00:00:00 2001
From: Jiaming Yuan <jm.yuan@outlook.com>
Date: Thu, 2 Mar 2023 06:49:39 +0800
Subject: [PATCH] Update c++ requirement to 17 for the R package. (#8860)

---
 R-package/DESCRIPTION  | 2 +-
 R-package/configure    | 6 +++---
 R-package/configure.ac | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/R-package/DESCRIPTION b/R-package/DESCRIPTION
index 3b230ac87..9ceef2fda 100644
--- a/R-package/DESCRIPTION
+++ b/R-package/DESCRIPTION
@@ -66,4 +66,4 @@ Imports:
     jsonlite (>= 1.0),
 RoxygenNote: 7.2.3
 Encoding: UTF-8
-SystemRequirements: GNU make, C++14
+SystemRequirements: GNU make, C++17
diff --git a/R-package/configure b/R-package/configure
index 834cb95c2..19ea48a91 100755
--- a/R-package/configure
+++ b/R-package/configure
@@ -2096,9 +2096,9 @@ if test -z "${R_HOME}"; then
   exit 1
 fi
 
-CXX14=`"${R_HOME}/bin/R" CMD config CXX14`
-CXX14STD=`"${R_HOME}/bin/R" CMD config CXX14STD`
-CXX="${CXX14} ${CXX14STD}"
+CXX17=`"${R_HOME}/bin/R" CMD config CXX17`
+CXX17STD=`"${R_HOME}/bin/R" CMD config CXX17STD`
+CXX="${CXX17} ${CXX17STD}"
 CXXFLAGS=`"${R_HOME}/bin/R" CMD config CXXFLAGS`
 
 CC=`"${R_HOME}/bin/R" CMD config CC`
diff --git a/R-package/configure.ac b/R-package/configure.ac
index 4e6cfee70..1fb6ea35a 100644
--- a/R-package/configure.ac
+++ b/R-package/configure.ac
@@ -10,9 +10,9 @@ if test -z "${R_HOME}"; then
   exit 1
 fi
 
-CXX14=`"${R_HOME}/bin/R" CMD config CXX14`
-CXX14STD=`"${R_HOME}/bin/R" CMD config CXX14STD`
-CXX="${CXX14} ${CXX14STD}"
+CXX17=`"${R_HOME}/bin/R" CMD config CXX17`
+CXX17STD=`"${R_HOME}/bin/R" CMD config CXX17STD`
+CXX="${CXX17} ${CXX17STD}"
 CXXFLAGS=`"${R_HOME}/bin/R" CMD config CXXFLAGS`
 
 CC=`"${R_HOME}/bin/R" CMD config CC`