From ba5f6783e2f6ba3bb55ff71f911c085a96b17016 Mon Sep 17 00:00:00 2001
From: Aaron Colwell <300262+acolwell@users.noreply.github.com>
Date: Sat, 16 Sep 2023 16:43:46 -0700
Subject: [PATCH] Force c++20 when building Natron.

---
 global.pri                       | 6 +++---
 tools/jenkins/build-natron.sh    | 4 ++--
 tools/jenkins/compiler-common.sh | 3 +++
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/global.pri b/global.pri
index da7052b3e..42fdbbcb0 100644
--- a/global.pri
+++ b/global.pri
@@ -530,9 +530,9 @@ unix {
   c++11 {
     c++20 {
       QMAKE_CXXFLAGS += -std=c++20
-      enable_cxx17.name = CLANG_CXX_LANGUAGE_STANDARD
-      enable_cxx17.value = c++20
-      QMAKE_MAC_XCODE_SETTINGS += enable_cxx17
+      enable_cxx20.name = CLANG_CXX_LANGUAGE_STANDARD
+      enable_cxx20.value = c++20
+      QMAKE_MAC_XCODE_SETTINGS += enable_cxx20
     }
     !c++20 {
       QMAKE_CXXFLAGS += -std=c++11
diff --git a/tools/jenkins/build-natron.sh b/tools/jenkins/build-natron.sh
index ca131e1e1..1c79b13df 100755
--- a/tools/jenkins/build-natron.sh
+++ b/tools/jenkins/build-natron.sh
@@ -290,8 +290,8 @@ fi
 # build
 if [ "$NO_BUILD" != "1" ]; then
     printStatusMessage "Building Natron..."
-    echo "env CFLAGS=\"${BF:-}\" CXXFLAGS=\"${BF:-}\" \"$QMAKE\" -r CONFIG+=\"$COMPILE_TYPE\" QMAKE_CC=\"$CC\" QMAKE_CXX=\"$CXX\" QMAKE_LINK=\"$CXX\" QMAKE_OBJECTIVE_CC=\"$OBJECTIVE_CC\" QMAKE_OBJECTIVE_CXX=\"$OBJECTIVE_CXX\" ${QMAKE_FLAGS_EXTRA[*]} ${PYO:-} ../Project.pro"
-    env CFLAGS="${BF:-}" CXXFLAGS="${BF:-}" "$QMAKE" -r CONFIG+="$COMPILE_TYPE" QMAKE_CC="$CC" QMAKE_CXX="$CXX" QMAKE_LINK="$CXX" QMAKE_OBJECTIVE_CC="$OBJECTIVE_CC" QMAKE_OBJECTIVE_CXX="$OBJECTIVE_CXX" "${QMAKE_FLAGS_EXTRA[@]}" ${PYO:-} "$srcdir"/Project.pro
+    echo "env CFLAGS=\"${BF:-}\" CXXFLAGS=\"${BF:-}\" \"$QMAKE\" -r CONFIG+=\"$COMPILE_TYPE\" QMAKE_CC=\"$CC\" QMAKE_CXX=\"$CXX20\" QMAKE_LINK=\"$CXX\" QMAKE_OBJECTIVE_CC=\"$OBJECTIVE_CC\" QMAKE_OBJECTIVE_CXX=\"$OBJECTIVE_CXX\" ${QMAKE_FLAGS_EXTRA[*]} ${PYO:-} ../Project.pro"
+    env CFLAGS="${BF:-}" CXXFLAGS="${BF:-}" "$QMAKE" -r CONFIG+="$COMPILE_TYPE" QMAKE_CC="$CC" QMAKE_CXX="$CXX20" QMAKE_LINK="$CXX20" QMAKE_OBJECTIVE_CC="$OBJECTIVE_CC" QMAKE_OBJECTIVE_CXX="$OBJECTIVE_CXX" "${QMAKE_FLAGS_EXTRA[@]}" ${PYO:-} "$srcdir"/Project.pro
     make -j"${MKJOBS}"
     make -j"${MKJOBS}" -C Tests
     if [ "$PKGOS" = "OSX" ]; then
diff --git a/tools/jenkins/compiler-common.sh b/tools/jenkins/compiler-common.sh
index 534cf2e20..fd2d9886d 100644
--- a/tools/jenkins/compiler-common.sh
+++ b/tools/jenkins/compiler-common.sh
@@ -6,11 +6,13 @@ set -u # Treat unset variables as an error when substituting.
 
 STD14="c++14"
 STD17="c++17"
+STD20="c++20"
 
 # https://stackoverflow.com/a/42232124
 if [ "$PKGOS" = "Windows" ]; then
     STD14="gnu++14"
     STD17="gnu++17"
+    STD20="gnu++20"
 fi
 
 if [ "$PKGOS" = "OSX" ]; then
@@ -205,6 +207,7 @@ COMPILER=${COMPILER:-gcc}
 CC=${CC:-gcc}
 CXX=${CXX:-g++ -std=${STD14}}
 CXX17=${CXX17:-g++ -std=${STD17}}
+CXX20=${CXX20:-g++ -std=${STD20}}
 OBJECTIVE_CC=${OBJECTIVE_CC:-${CC}}
 OBJECTIVE_CXX=${OBJECTIVE_CXX:-${CXX}}