From 3f985b15572453eb5d629391f58c53282b8540b6 Mon Sep 17 00:00:00 2001
From: Lephenixnoir <sebastien.michelland@protonmail.com>
Date: Thu, 7 Jan 2021 18:31:52 +0100
Subject: [PATCH] avoid rebuilds during updates

---
 build.sh     |  3 +++
 configure.sh | 13 +++++++++++++
 giteapc.make |  2 +-
 install.sh   |  3 +++
 4 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index efe64e5..acc2395 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,8 @@
 #! /usr/bin/env bash
 
+# Avoid rebuilds of the same version
+[[ ! -d build ]] && exit 0
+
 source util.sh
 cd build
 
diff --git a/configure.sh b/configure.sh
index 97b4bb4..85cf175 100755
--- a/configure.sh
+++ b/configure.sh
@@ -3,9 +3,22 @@
 source util.sh
 
 VERSION=$1
+PREFIX="$2"
 URL="https://ftp.gnu.org/gnu/binutils/binutils-$VERSION.tar.xz"
 ARCHIVE=$(basename "$URL")
 
+# Avoid rebuilds of the same version
+
+existing_as="$PREFIX/bin/sh-elf-as"
+
+if [[ -f "$existing_as" ]]; then
+  existing_version=$($existing_as --version | head -n 1 | grep -Eo '[0-9.]+$')
+  if [[ $existing_version == $VERSION ]]; then
+    echo "$TAG Version $VERSION already installed, skipping rebuild"
+    exit 0
+  fi
+fi
+
 # Check dependencies for binutils and GCC
 
 if command -v apt >/dev/null 2>&1; then
diff --git a/giteapc.make b/giteapc.make
index 935f916..e6f10f8 100644
--- a/giteapc.make
+++ b/giteapc.make
@@ -8,7 +8,7 @@ include giteapc-config-$(GITEAPC_CONFIG).make
 endif
 
 configure:
-	@ ./configure.sh $(VERSION)
+	@ ./configure.sh $(VERSION) "$(PREFIX)"
 
 build:
 	@ ./build.sh
diff --git a/install.sh b/install.sh
index b5cab80..887ff58 100755
--- a/install.sh
+++ b/install.sh
@@ -1,5 +1,8 @@
 #! /usr/bin/env bash
 
+# Avoid rebuilds of the same version
+[[ ! -d build ]] && exit 0
+
 source util.sh
 PREFIX="$1"