From 25b581c833679939408fa51ce1d43b55ae481d51 Mon Sep 17 00:00:00 2001
From: Jeremy Rand <jeremyrand@airmail.cc>
Date: Fri, 19 Feb 2021 00:23:40 +0000
Subject: [PATCH] clang: Support rbm checkpointing

---
 projects/clang/build | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/projects/clang/build b/projects/clang/build
index c4c16d9..bb8283b 100644
--- a/projects/clang/build
+++ b/projects/clang/build
@@ -2,6 +2,13 @@
 [% c("var/set_default_env") -%]
 distdir=/var/tmp/dist/[% project %]
 mkdir -p /var/tmp/dist
+
+if [[ -e /var/tmp/dist/checkpoint1 ]] ; then
+  set +e
+  source /var/tmp/dist/checkpoint1
+  set -e
+else
+
 tar -C /var/tmp/dist -xf [% c('input_files_by_name/cmake') %]
 export PATH="/var/tmp/dist/cmake/bin:$PATH"
 [% IF c("var/linux") || c("var/android") %]
@@ -35,6 +42,12 @@ cd build
             [% IF c("var/rlbox") -%]-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly \[% END -%]
                                     -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;compiler-rt;libcxx;libcxxabi;lld"
 [% END -%]
+
+set > /var/tmp/dist/checkpoint1
+export -p >> /var/tmp/dist/checkpoint1
+fi
+
+cd /var/tmp/build/clang-source/build
 make -j[% c("buildconf/num_procs") %]
 make install
 cd /var/tmp/dist
-- 
2.20.1