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c167aadb27
This commit introduces a "copy-builtin" script designed to prepare a kernel source tree for building SPL as a builtin module. The script makes a full copy of all needed files, thus making the kernel source tree fully independent of the spl source package. To achieve that, some compilation flags (-include, -I) have been moved to module/Makefile. This Makefile is only used when compiling external modules; when compiling builtin modules, a Kbuild file generated by the configure-builtin script is used instead. This makes sure Makefiles inside the kernel source tree does not contain references to the spl source package. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue zfsonlinux/zfs#851
123 lines
2.4 KiB
Bash
Executable File
123 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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set -e
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usage()
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{
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echo "usage: $0 <kernel source tree>" >&2
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exit 1
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}
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[ "$#" -eq 1 ] || usage
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KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
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MODULES=()
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for MODULE_DIR in module/*
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do
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[ -d "$MODULE_DIR" ] || continue
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MODULES+=("${MODULE_DIR##*/}")
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done
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if ! [ -e 'spl_config.h' ]
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then
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echo >&2
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echo " $0: you did not run configure, or you're not in the SPL source directory." >&2
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echo " $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
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echo >&2
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exit 1
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fi
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make clean || true
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rm -rf "$KERNEL_DIR/include/spl" "$KERNEL_DIR/spl"
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cp --recursive include "$KERNEL_DIR/include/spl"
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cp --recursive module "$KERNEL_DIR/spl"
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cp spl_config.h "$KERNEL_DIR/"
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adjust_obj_paths()
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{
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local FILE="$1"
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local LINE OBJPATH
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while IFS='' read -r LINE
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do
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OBJPATH="${LINE#\$(MODULE)-objs += }"
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if [ "$OBJPATH" = "$LINE" ]
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then
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echo "$LINE"
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else
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echo "\$(MODULE)-objs += ${OBJPATH##*/}"
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fi
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done < "$FILE" > "$FILE.new"
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mv "$FILE.new" "$FILE"
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}
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for MODULE in "${MODULES[@]}"
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do
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adjust_obj_paths "$KERNEL_DIR/spl/$MODULE/Makefile"
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done
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cat > "$KERNEL_DIR/spl/Kconfig" <<"EOF"
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config SPL
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tristate "Solaris Porting Layer (SPL)"
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help
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This is the SPL library from the ZFS On Linux project.
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See http://zfsonlinux.org/
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To compile this library as a module, choose M here.
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If unsure, say N.
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EOF
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{
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cat <<-"EOF"
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SPL_MODULE_CFLAGS = -I$(srctree)/include/spl
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SPL_MODULE_CFLAGS += -include $(srctree)/spl_config.h
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export SPL_MODULE_CFLAGS
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obj-$(CONFIG_SPL) :=
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EOF
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for MODULE in "${MODULES[@]}"
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do
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echo 'obj-$(CONFIG_SPL) += ' "$MODULE/"
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done
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} > "$KERNEL_DIR/spl/Kbuild"
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add_after()
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{
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local FILE="$1"
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local MARKER="$2"
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local NEW="$3"
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local LINE
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while IFS='' read -r LINE
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do
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echo "$LINE"
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if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
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then
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echo "$NEW"
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MARKER=''
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if IFS='' read -r LINE
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then
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[ "$LINE" != "$NEW" ] && echo "$LINE"
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fi
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fi
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done < "$FILE" > "$FILE.new"
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mv "$FILE.new" "$FILE"
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}
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add_after "$KERNEL_DIR/Kconfig" 'source "arch/$SRCARCH/Kconfig"' 'source "spl/Kconfig"'
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# We must take care to build SPL before ZFS, else module initialization order will be wrong
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sed -i 's#kernel/ mm/ fs/#kernel/ mm/ spl/ fs/#' "$KERNEL_DIR/Makefile"
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echo >&2
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echo " $0: done." >&2
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echo " $0: now you can build the kernel with SPL support." >&2
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echo " $0: make sure you enable SPL support (CONFIG_SPL) before building." >&2
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echo >&2
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