From f17af5f196ff39f5e9ffadaf05d5d640f14949fc Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 31 Mar 2017 07:54:52 +0200
Subject: Bootstrap toolchain

---
 buildos | 52 +++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 49 insertions(+), 3 deletions(-)

(limited to 'buildos')

diff --git a/buildos b/buildos
index 780dfca..7aa9a0e 100755
--- a/buildos
+++ b/buildos
@@ -12,7 +12,8 @@
 # @@ What will systemd do if we fail? Perhaps configure it to restart
 #    us? Or not since we may hose the logs.
 #
-trap "exit 1" ERR
+owd="$(pwd)"
+trap "{ cd '$owd'; exit 1; }" ERR
 set -o errtrace # Trap in functions.
 
 # Note: diagnostics goes to stdout.
@@ -192,11 +193,12 @@ function tc_fetch () # <toolchain-prefix> <line>
 #
 function tc_bootstrap () # <toolchain-name>
 {
-  local tp="${toolchains["$1"]}"
+  local tn="$1"
+  local tp="${toolchains["$tn"]}"
   local tr="$(tc_value "$tp" toolchain_root)"
   local tf="$(tc_value "$tp" toolchain_file)"
 
-  # Fetch files according to the sums file. Skip empty line and those that
+  # Fetch files according to the sums file. Skip empty lines and those that
   # start with '#'.
   #
   local l ls=()
@@ -208,6 +210,49 @@ function tc_bootstrap () # <toolchain-name>
       return 1 # Diagnostics has already been issued.
     fi
   done
+
+  local tv="$(tc_value "$tp" toolchain_ver)"   # Should be set by tc_fetch().
+  local tt="$(tc_value "$tp" toolchain_trust)"
+
+  # Bootstrap in /tmp/toolchains/$tn/, install to /build/toolchains/$tn/.
+  #
+  local wd="/tmp/toolchains/$tn"
+  local id="/build/toolchains/$tn"
+
+  mkdir -p "$wd"
+  mkdir -p "$id"
+
+  local r=1
+
+  cd "$wd"
+  while true; do # The "breakout loop".
+
+    # Extract the toolchain.
+    #
+    if ! tar -xf "$tr/build2-toolchain.tar.xz"; then
+      info "unable to extract $tr/build2-toolchain.tar.xz"
+      break
+    fi
+
+    cd "build2-toolchain-$tv"
+
+    # Bootstrap, stage, and install using the provided build.sh script.
+    #
+    if ! ./build.sh --install-dir "$id" --trust "$tt" g++; then
+      info "failed to build $(pwd)"
+      break
+    fi
+
+    r=0
+    break
+  done
+  cd "$owd"
+
+  # Clean up.
+  #
+  rm -r "$wd"
+
+  return "$r"
 }
 
 # Print monitor configuration as email body.
@@ -346,6 +391,7 @@ EOF
 	  s="failed to bootstrap $tn toolchain, waiting for new version"
 	fi
 
+	info "$s"
 	email "$s" <<EOF
 $tn.bootstrap_log: tftp://$hname/toolchains/$tn/bootstrap.log
 EOF
-- 
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