103 lines
2.8 KiB
Bash
Executable File
103 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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#
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# generate_core.sh extracts the core part from buildgcc script,
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# most importantly the checksum calculation/verification functions.
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#
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# Copyright (C) 2019 Mike Banon <mikebdp2@gmail.com>
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#
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##############################################################################
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#
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# USAGE:
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# ./generate_core.sh <buildgcc> <corescript> prepare_before_patch
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# where
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# buildgcc - path to input buildgcc script
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# corescript - path to output core part script
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# prepare_before_patch - optional argument to insert prepare_${package}
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# call into the unpack_and_patch function, e.g.
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# for removing some files with rm command
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# in order to reduce the size of patch file
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#
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##############################################################################
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buildgcc="$1"
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corescript="$2"
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prepare_before_patch="$3"
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#
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# Imports the source file fragment between start and end into the
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# destination file, optionally excluding the last line if not needed
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#
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import_from_file() {
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source="$1"
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destination="$2"
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start="$3"
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end="$4"
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last_line_disabled="$5"
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if [ -z "${last_line_disabled}" ] ; then
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sed -n "/^${start}/,/^${end}/{/^${start}/{p;n};{p}}" "$source" >> "$destination"
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else
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sed -n "/^${start}/,/^${end}/{/^${start}/{p;n};/^${end}/{q};{p}}" "$source" >> "$destination"
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fi
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}
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#
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# Import the color defines together with UNAME/HALT_FOR_TOOLS variables
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#
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import_from_file "$buildgcc" "$corescript" "red=" "HALT_FOR_TOOLS=0" || exit "$?"
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#
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# Import the core functions
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#
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FUNCTIONS="please_install searchtool download compute_hash error_hash_mismatch verify_hash unpack_and_patch"
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for F in $FUNCTIONS ; do
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import_from_file "$buildgcc" "$corescript" "$F()" "}" || exit "$?"
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done
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#
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# Import a fragment where we find tar/patch/make and other essential tools
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#
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import_from_file "$buildgcc" "$corescript" "# Find all the required tools" "# Allow" "last_line_disabled" || exit "$?"
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#
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# Import a fragment with conditional exit if some required tools were not found
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#
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import_from_file "$buildgcc" "$corescript" "if \[ \"\$HALT_FOR_TOOLS" "fi" || exit "$?"
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#
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# Avoid the unnecessary subdirectories holding a single file each
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#
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sed -i -e "s/patches\///g" "$corescript"
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sed -i -e "s/sum\///g" "$corescript"
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sed -i -e "s/tarballs\///g" "$corescript"
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sed -i -e "s/cd tarballs || exit 1//g" "$corescript"
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sed -i -e "s/cd \.\.//g" "$corescript"
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#
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# Get the known checksum without using a dedicated single-line file
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#
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sed -i -e "s/\tknown_hash=\"\$(get_known_hash.*/\tknown_hash=\"\$2\"/g" "$corescript"
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#
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# Update the paths printed at the error messages
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#
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sed -i -e "s/util\/crossgcc\///g" "$corescript"
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#
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# Insert prepare_${package} function call between the unpack and patch operations
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#
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if [ ! -z "${prepare_before_patch}" ] ; then
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sed -i -e "/\$TAR \$FLAGS \"\$(basename \"\$archive\")\"/a prepare_\${package} || exit \"\$?\"" "$corescript"
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fi
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#
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