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-rw-r--r--.gitignore2
-rwxr-xr-xconfigure103
-rwxr-xr-xscripts/genmake93
3 files changed, 198 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
index 5c5ff1687..4d70126d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ pkg
scripts/sgrep
scripts/tsort
scripts/.index
+Makefile
+built
diff --git a/configure b/configure
new file mode 100755
index 000000000..72abed07d
--- /dev/null
+++ b/configure
@@ -0,0 +1,103 @@
+#!/bin/sh -e
+
+HERE="$(dirname $(readlink -f ${0}))";
+
+##
+# Full list of all possible repositories.
+#
+repos=$(grep -v ^# <<EOF
+system
+user
+legacy
+experimental
+EOF
+);
+
+##
+# Do not build any repos by default.
+#
+build="";
+
+##
+# Usage.
+#
+usage ()
+{
+ printf "Usage: %s OPTION [OPTION] ...\n" "${0}";
+
+ printf "\nOptions:\n\n";
+ cat <<"EOF"
+ --simulate Sleep 1 second instead of build
+EOF
+
+ printf "\nRepositories:\n\n";
+ for k in ${repos}; do
+ printf " --enable-%s\n" "${k}";
+ done
+ printf "\n";
+}
+
+##
+# Enable repositories only explicitly.
+#
+_find=;
+_fake=0; # default not a simulation
+for arg; do
+ case "${arg}" in
+ --enable-*)
+ for repo in ${repos}; do
+ _find=0;
+ if test "${arg##*-}" = "${repo}"; then
+ build="${build} ${repo}";
+ _find=1;
+ break;
+ fi
+ done
+ if test ${_find} -eq 0; then
+ printf "E: Repository '%s' is not supported!\n" "${arg##*-}";
+ exit 1;
+ fi
+ ;;
+ --simulate)
+ _fake=1;
+ ;;
+ *)
+ printf "E: Option '%s' is not supported!\n" "${arg}";
+ exit 1;
+ ;;
+ esac
+done
+
+##
+# Sorted order.
+#
+build=$(printf "%s\n" "${build}" | tr ' ' '\n' | sort | uniq | xargs);
+
+##
+# Sanity checks.
+#
+if test "${#build}" -eq 0; then
+ usage;
+ exit 0;
+fi
+
+##
+# Generate Makefile.
+#
+printf "Generating subpackage index ...\n";
+"${HERE}"/scripts/setup;
+printf "Generating dependency list ...\n";
+"${HERE}"/scripts/deplist ${build} | "${HERE}"/scripts/genmake ${_fake};
+
+##
+# Generate report.
+#
+printf "\nSuccess!\n\n";
+
+_numpkgs=$(grep -E '^.*/.*:' "${HERE}"/Makefile | wc -l);
+printf " Packages\t: %s\n" "${_numpkgs}";
+printf "\n";
+
+if test ${_fake} -eq 1; then
+ printf "SIMULATION ONLY! NO PACKAGES WILL BE BUILT!\n\n";
+fi
diff --git a/scripts/genmake b/scripts/genmake
new file mode 100755
index 000000000..79a89175a
--- /dev/null
+++ b/scripts/genmake
@@ -0,0 +1,93 @@
+#!/bin/sh -e
+
+# ./scripts/deplist system | ./scripts/genmake [0|1]
+
+##
+# This script reads from stdin and generates
+# a Makefile in the repository's root.
+#
+# The first argument to this script is a value {0,1}
+# indicating whether to generate real rules or fake
+# (simulation) rules. Fake rules might be 'sleep 1'
+# or can be user-defined.
+#
+# NOTE: out-of-tree builds are not supported.
+#
+
+HERE="$(dirname $(readlink -f ${0}))";
+DEST="${HERE}"/../Makefile;
+TEMP="$(mktemp)";
+
+##
+# Build recipes.
+#
+# FIXME: is $(@D) POSIX or $(%/built=%) required?
+#
+rule_real=$(cat <<"EOF"
+ @cd $(@D) && abuild -r
+EOF
+);
+rule_fake=$(cat <<"EOF"
+ @echo $(@D)
+ @sleep 1
+EOF
+);
+
+##
+# Read deplist from stdin, synthesize Makefile targets.
+#
+awk '{ $(NF+1)=$1; print $0 }' `# duplicate first column to last` \
+ | sed > "${TEMP}" -E `# use extended regex, write to temp file ` \
+ -e 's/ /: /' `# append colon to first column` \
+ -e '/: /s@( |$)@/built @2g' `# append '/built' to all dependencies` \
+ -e 's/ $//g' `# trim trailing spaces` \
+ ;
+
+##
+# Internal; convenience only.
+#
+list=$(grep : "${TEMP}" \
+ | cut -d: -f1 \
+ | xargs \
+);
+
+##
+# Create (or truncate) the output Makefile.
+#
+# Default target builds everything.
+#
+printf "all: %s\n" "${list}" > "${DEST}";
+
+##
+# Append generic target build recipe.
+#
+rule=;
+case ${1} in
+ 0) rule="${rule_real}"; ;;
+ 1) rule="${rule_fake}"; ;;
+ *) printf "E: Invalid mode '%s'\n" "${1}"; exit 1; ;;
+esac
+cat >> "${DEST}" <<EOF
+%/built: %/APKBUILD
+${rule}
+ @touch \$@
+clean:
+ @find \$(CURDIR) -type f -name built -print -delete
+distclean:
+ @rm -fv \
+ \$(CURDIR)/Makefile \
+ \$(CURDIR)/scripts/.index \
+ \$(CURDIR)/scripts/sgrep \
+ \$(CURDIR)/scripts/tsort \
+ ;
+EOF
+
+##
+# Append target rules to output Makefile.
+#
+cat >> "${DEST}" "${TEMP}";
+
+##
+# Clean up.
+#
+rm "${TEMP}";