build: allow building from source zip file.

Changes both how we construct it and how we deal with not having git.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Makefile

@@ -1,6 +1,7 @@
 #! /usr/bin/make
-VERSION_NAME=Principled Opposition to SegWit
-VERSION=$(shell git describe --always --dirty=-modded --abbrev=7)
+
+# Extract version from git, or if we're from a zipfile, use dirname
+VERSION=$(shell git describe --always --dirty=-modded --abbrev=7 2>/dev/null || pwd | sed -n 's,.*/clightning-\(v[0-9.rc]*\)$$,\1,p')
 
 ifeq ($(VERSION),)
 $(error "ERROR: git is required for generating version information")

tools/build-release.sh

@@ -49,7 +49,13 @@ for platform in Fedora-28-amd64 Ubuntu-16.04-amd64 Ubuntu-16.04-i386; do
     docker run --rm=true -w /build $TAG rm -rf /"$VERSION-$platform" /build
 done
 
-git archive --format=zip -o release/clightning-"$VERSION".zip --prefix=lightning-master/ master
+# git archive won't go into submodules :(
+ln -sf .. "release/clightning-$VERSION"
+FILES=$(git ls-files --recurse-submodules | sed "s,^,clightning-$VERSION/,")
+# shellcheck disable=SC2086
+(cd release && zip "clightning-$VERSION.zip" $FILES)
+rm "release/clightning-$VERSION"
+exit 0
 
 sha256sum release/clightning-"$VERSION"* > release/SHA256SUMS
 gpg -sb --armor -o release/SHA256SUMS.asc-"$(gpgconf --list-options gpg | awk -F: '$1 == "default-key" {print $10}' | tr -d '"')" release/SHA256SUMS

tools/refresh-submodules.sh

@@ -5,6 +5,9 @@ if [ $# = 0 ]; then
     exit 1
 fi
 
+# If no git dir, forget it.
+[ -d .git ] || exit 0
+
 # git submodule can't run in parallel.  Really.
 if ! mkdir .refresh-submodules 2>/dev/null ; then
     exit 0