From afcf6e9a9d006a2697c92b1069af97708a281a36 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Thu, 15 Feb 2018 21:51:25 +0100
Subject: computing minimal dependencies and make-dependencies for stage2

---
 TODOS                   |  1 -
 compute_dependencies.sh | 54 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100755 compute_dependencies.sh

diff --git a/TODOS b/TODOS
index 271d9ee..56aa715 100644
--- a/TODOS
+++ b/TODOS
@@ -49,4 +49,3 @@
 - using the cross compiler for syslinux is most likely overkill
 - some packages still build more than really needed:
   - syslinux: builds docu with asciidoc and build EFI stuff from gnu-efi
-- net-tools, redo the patch
diff --git a/compute_dependencies.sh b/compute_dependencies.sh
new file mode 100755
index 0000000..b9a5fd6
--- /dev/null
+++ b/compute_dependencies.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+. "./default.conf"
+
+# Compute dependencies and make-dependencies to build packages in stage1,
+# stage2 or stage3
+
+tmp_dir=$(mktemp -d 'tmp.compute-dependencies.0.XXXXXXXXXX' --tmpdir)
+trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
+
+# all top-level packages in base and base-devel
+TOP_PACKAGES=$(pacman -Qg base base-devel | cut -f 2 -d ' ')
+
+# get dependencies
+for package in $TOP_PACKAGES; do
+	pactree -l $package >>${tmp_dir}/dependencies
+done
+
+# all packages needed
+ALL_PACKAGES=$(cat ${tmp_dir}/dependencies | sort | uniq)
+
+export CARCH='x86_64'
+
+for package in $ALL_PACKAGES; do
+	asp show $package >${tmp_dir}/$package.PKGBUILD
+	# temporary hotfix for FS#57524
+	if test "$(head -n1 ${tmp_dir}/$package.PKGBUILD | grep -c '^\$Id\$$' )" == 1; then
+		sed -i 's/^\(\$Id\$\)$/#\1/' ${tmp_dir}/$package.PKGBUILD
+	fi
+	# asp makes redirects like '==>' ignore those and use the pointee
+	if test "$(head -n1 ${tmp_dir}/$package.PKGBUILD | grep -c '==>' )" == 1; then
+		_tmp=$(head -n1 ${tmp_dir}/$package.PKGBUILD | sed 's/==> \(.*\)/\1/')
+		SUB_PACKAGE=$(echo $_tmp | cut -f 1 -d ' ')
+		ADD_PACKAGE=$(echo $_tmp | rev | cut -f 1 -d ' ' | rev)
+		# TODO: we should map sub packages to packages everywhere
+		echo "WARN: seen a redirect from $SUB_PACKAGE to $ADD_PACKAGE" >&2
+		continue
+	fi
+	depends=$(. ${tmp_dir}/$package.PKGBUILD; echo "${depends[@]}")
+	makedepends=$(. ${tmp_dir}/$package.PKGBUILD; echo "${makedepends[@]}")
+	# TODO handle version constraints
+	#checkdepends=$(. ${tmp_dir}/$package.PKGBUILD; echo "${checkdepends[@]}")
+	#echo $package
+	#printf "\tdepends: $depends\n"
+	#printf "\tmakedepends: $makedepends\n"
+	#printf "\tcheckdepends: $checkdepends\n"
+#	echo "${depends[@]}"
+	echo "${makedepends[@]}"
+done
+
+# ./compute_dependencies.sh | tr -s ' ' '\n' | sort | uniq > depends
+# ./compute_dependencies.sh | tr -s ' ' '\n' | sort | uniq > makedepends
+# grep -xf depends makedepends > makedepends_already_depends
+# grep -vxf depends makedepends > new_makedepends
-- 
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