1#!/bin/sh 2# 3# generate_core.sh extracts the core part from buildgcc script, 4# most importantly the checksum calculation/verification functions. 5# 6# Copyright (C) 2019 Mike Banon <[email protected]> 7# 8############################################################################## 9# 10# USAGE: 11# ./generate_core.sh <buildgcc> <corescript> prepare_before_patch 12# where 13# buildgcc - path to input buildgcc script 14# corescript - path to output core part script 15# prepare_before_patch - optional argument to insert prepare_${package} 16# call into the unpack_and_patch function, e.g. 17# for removing some files with rm command 18# in order to reduce the size of patch file 19# 20############################################################################## 21 22buildgcc="$1" 23corescript="$2" 24prepare_before_patch="$3" 25 26# 27# Imports the source file fragment between start and end into the 28# destination file, optionally excluding the last line if not needed 29# 30 31import_from_file() { 32 source="$1" 33 destination="$2" 34 start="$3" 35 end="$4" 36 last_line_disabled="$5" 37 if [ -z "${last_line_disabled}" ] ; then 38 sed -n "/^${start}/,/^${end}/{/^${start}/{p;n};{p}}" "$source" >> "$destination" 39 else 40 sed -n "/^${start}/,/^${end}/{/^${start}/{p;n};/^${end}/{q};{p}}" "$source" >> "$destination" 41 fi 42} 43 44# 45# Import the color defines together with UNAME/HALT_FOR_TOOLS variables 46# 47 48import_from_file "$buildgcc" "$corescript" "red=" "HALT_FOR_TOOLS=0" || exit "$?" 49 50# 51# Import the core functions 52# 53 54FUNCTIONS="please_install searchtool download compute_hash error_hash_mismatch verify_hash unpack_and_patch" 55 56for F in $FUNCTIONS ; do 57 import_from_file "$buildgcc" "$corescript" "$F()" "}" || exit "$?" 58done 59 60# 61# Import a fragment where we find tar/patch/make and other essential tools 62# 63 64import_from_file "$buildgcc" "$corescript" "# Find all the required tools" "# Allow" "last_line_disabled" || exit "$?" 65 66# 67# Import a fragment with conditional exit if some required tools were not found 68# 69 70import_from_file "$buildgcc" "$corescript" "if \[ \"\$HALT_FOR_TOOLS" "fi" || exit "$?" 71 72# 73# Avoid the unnecessary subdirectories holding a single file each 74# 75 76sed -i -e "s/patches\///g" "$corescript" 77sed -i -e "s/sum\///g" "$corescript" 78sed -i -e "s/tarballs\///g" "$corescript" 79sed -i -e "s/cd tarballs || exit 1//g" "$corescript" 80sed -i -e "s/cd \.\.//g" "$corescript" 81 82# 83# Get the known checksum without using a dedicated single-line file 84# 85 86sed -i -e "s/\tknown_hash=\"\$(get_known_hash.*/\tknown_hash=\"\$2\"/g" "$corescript" 87 88# 89# Update the paths printed at the error messages 90# 91 92sed -i -e "s/util\/crossgcc\///g" "$corescript" 93 94# 95# Insert prepare_${package} function call between the unpack and patch operations 96# 97 98if [ ! -z "${prepare_before_patch}" ] ; then 99 sed -i -e "/\$TAR \$FLAGS \"\$(basename \"\$archive\")\"/a prepare_\${package} || exit \"\$?\"" "$corescript" 100 sed -i -e "/\$TAR \$FLAGS \"\$archive\"/a prepare_\${package} || exit \"\$?\"" "$corescript" 101fi 102 103# 104