Blame project/hoppla.sh

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