From 50a0a7ef8558bc73e77db3c7eb9aaaa1dab54fdb Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Dec 24 2018 12:23:35 +0000
Subject: project: support of multiple variants: hoppla!


---

diff --git a/project/hoppla.sh b/project/hoppla.sh
new file mode 100755
index 0000000..5e55b3f
--- /dev/null
+++ b/project/hoppla.sh
@@ -0,0 +1,155 @@
+#!/bin/sh
+
+# the purpose of this script is to speed-up the support
+# of additional variants. it is not very pretty, but
+# does the job quite well. please read the script in
+# its entirety before executing it.
+
+set -eu
+
+trap usage 1 EXIT
+
+py_refdir=$(pwd)
+py_hoppla=$(basename "$0")
+py_differ=
+
+usage()
+{
+	printf '%s: %s %s\n' "$py_hoppla" \
+		'please read this script' \
+		'and understand what it does.' >&2
+	exit 1
+}
+
+if ! [ -z ${4:-} ]; then
+	printf '%s: too many arguments.\n' "$py_hoppla" >&2
+	exit 1
+fi
+
+if ! [ -z ${3:-} ]; then
+	if [ "$3" != '--diff-only' ] && [ "$3" != '-d' ]; then
+		printf '%s: %s %s\n' "$py_hoppla" \
+			'invalid third argument' \
+			'(must be --diff-only or -d).' >&2
+		exit 1
+	else
+		py_differ=yes
+	fi
+fi
+
+py_base_ver="$1"
+py_curr_ver="$2"
+
+PY_SOURCE_PREFIX=${PY_SOURCE_PREFIX:-}
+
+if [ -z $PY_SOURCE_PREFIX ]; then
+	PY_SOURCE_PREFIX=$py_refdir
+fi
+
+for py_ver in "$py_base_ver" "$py_curr_ver"; do
+	case "$py_ver" in
+		[0-9].[0-9].[0-9] )
+			if ! [ -d "$PY_SOURCE_PREFIX"/Python-$py_ver ]; then
+				printf '%s: %s: %s\n' "$py_hoppla" \
+					"$PY_SOURCE_PREFIX"/Python-$py_ver \
+					'the directory does not exist.' >&2
+					exit 1
+			fi
+			;;
+		* )
+			printf '%s: %s %s\n' "$py_hoppla" \
+				">>$py_ver<<" 'is not a valid python version.' >&2
+			exit 1
+	esac
+done
+
+for py_ver in $py_base_ver $py_curr_ver; do
+	if [ -z $py_differ ]; then
+		mkdir $py_refdir/$py_ver.build
+		cd    $py_refdir/$py_ver.build
+
+		printf '%s: configure.\n' $py_ver
+
+		"$PY_SOURCE_PREFIX"/Python-$py_ver/configure \
+			--enable-ipv6 > /dev/null
+
+		printf '%s: make.\n' $py_ver
+
+		make V=2 >pylog
+	else
+		cd $py_refdir/$py_ver.build
+	fi
+
+	py_dot=$(printf '%s' $py_ver | sed -e 's/\.[^.]*$//g')
+	py_abi=$(printf '%s' $py_dot | sed -e 's/\.//g')
+
+	grep -e ' -c ' pylog | grep -v -e 'build/temp.' -e '/install' \
+			| sed -e 's@Python-'$py_ver/'@Python-pyver/@g' \
+			      -e 's@-Wstrict-prototypes@@g' \
+			      -e 's@-Werror=implicit-function-declaration@@g' \
+			      -e 's@-Wno-unused-result@@g' \
+			      -e 's@-Wsign-compare@@g' \
+			      -e 's@-DNDEBUGe@@g' \
+			      -e 's@-DPy_BUILD_CORE@@g' \
+			      -e 's@-g -fwrapv -O3 -Wall@@g' \
+			      -e 's@-std=c99 -Wextra@@g' \
+			      -e 's@-Wno-missing-field-initializers@@g' \
+			      -e 's@-Wno-unused-result@@g' \
+			      -e 's@-Wno-unused-parameter@@g' \
+			      -e 's/  */ /g' \
+		| sort > cccore.log
+
+	grep -e ' -c ' pylog | grep -e 'build/temp.' \
+			| sed -e 's@Python-'$py_ver/'@Python-pyver/@g' \
+			      -e 's@'/$py_ver.build'@/pyver.build@g' \
+			      -e 's@'$py_dot/'@pydot/@g' \
+			      -e 's@-Wstrict-prototypes@@g' \
+			      -e 's@-Werror=implicit-function-declaration@@g' \
+			      -e 's@-Wno-unused-result@@g' \
+			      -e 's@-Wsign-compare@@g' \
+			      -e 's@-DNDEBUGe@@g' \
+			      -e 's@-DBLAKE2_USE_SSE=1@@g' \
+			      -e 's@-g -fwrapv -O3 -Wall@@g' \
+			      -e 's@-std=c99 -Wextra@@g' \
+			      -e 's@-Wno-missing-field-initializers@@g' \
+			      -e 's@-Wno-unused-result@@g' \
+			      -e 's@-Wno-unused-parameter@@g' \
+			      -e 's/  */ /g' \
+		| sort > ccext.log
+
+	grep -e ' -shared ' pylog | grep -e '.cpython-' \
+			| sed -e 's@Python-'$py_ver/'@Python-pyver/@g' \
+			      -e 's@.cpython-'$py_abi'@.cpython-pyabi.@g' \
+			      -e 's@'-$py_dot'/@-pydot/@g' \
+		| sort > pyext.log
+
+	find . -name '*.cpython-*' \
+			| sed -e 's@.cpython-'$py_abi'@.cpython-pyabi.@g' \
+			      -e 's@'-$py_dot'/@-pydot/@g' \
+		| sort > pyext.lst
+
+	find "$PY_SOURCE_PREFIX"/Python-$py_ver/Include -maxdepth 1 -name '*.h' \
+			| sed -e 's@Python-'$py_ver/'@Python-pyver/@g' \
+		| sort > pyhdr.lst
+done
+
+diffdir=$py_base_ver-vs-$py_curr_ver
+logfiles="cccore.log ccext.log pyext.log pyext.lst pyhdr.lst"
+genfiles="pyconfig.h Modules/config.c"
+
+cd $py_refdir
+mkdir -p $diffdir
+
+for f in $logfiles $genfiles; do
+	diffname=$(basename $f | sed -e 's/\.[^.]*$//g')
+
+	diff -u \
+			$py_refdir/$py_base_ver.build/$f \
+			$py_refdir/$py_curr_ver.build/$f \
+		> $diffdir/$diffname.diff || true
+done
+
+trap '' 0
+echo yay.
+
+exit 0