Get rid of config.gen

Instead, prepare the files as a part of bootstrap and install them.
This avoids rebuilding these files in each working directory; they
don't change anyway as they are generated from the same installed
source.

Signed-off-by: Alexey Neyman <stilor@att.net>

1 files changed, 180 insertions, 0 deletions

diff --git a/maintainer/gen-kconfig.sh b/maintainer/gen-kconfig.sh
new file mode 100755
index 0000000..4cb6567
--- /dev/null
+++ b/maintainer/gen-kconfig.sh
@@ -0,0 +1,180 @@
+#!/bin/bash
+
+set -e
+
+# Accept overrides from command line if needed
+sed=${SED:-sed}
+grep=${GREP:-grep}
+
+# Generate either a choice or a menuconfig with the specified entries.
+#
+# Usage:
+#   generate a choice:
+#       gen_choice <out-file> <label> <config-prefix> <base-dir> \
+#                  <conditionals> entry [entry...]
+#
+#   generate a menuconfig:
+#       gen_menu <out-file> <label> <config-prefix> <base-dir> \
+#                entry [entry...]
+#
+# where:
+#   out-file
+#       put the generated choice/menuconfig into that file
+#       for choices, it acts as the base bname of the file, the secondary
+#       parts (the .in.2) are put in out-file.2
+#
+#   label
+#       name for the entries family
+#       eg. Architecture, Kernel...
+#
+#   config-prefix
+#       prefix for the choice entries
+#       eg. ARCH, KERNEL...
+#
+#   base-dir
+#       base directory containing config files
+#       eg. config/arch, config/kernel...
+#
+#   conditionals (valid only for choice)
+#       generate backend conditionals if Y/y, don't if anything else
+#       if 'Y' (or 'y'), a dependency on the backen mode will be added
+#       to each entry
+#
+#   entry [entry...]
+#       a list of entry/ies toadd to the choice/menuconfig
+#       eg.:
+#           arm mips sh x86...
+#           linux cygwin mingw32 solaris...
+#           ...
+#
+
+# Helper: find the base names of all *.in files in a given directory
+get_components() {
+    local dir="${1}"
+    local f b
+
+    for f in ${dir}/*.in; do
+        b=${f#${dir}/}
+        echo ${b%.in}
+    done
+}
+
+# Generate a choice
+# See above for usage
+gen_choice() {
+    local out_file="${1}"
+    local label="${2}"
+    local cfg_prefix="${3}"
+    local base_dir="${4}"
+    local cond="${5}"
+    local file entry _entry
+
+    # Generate the part-1
+    exec >"${out_file}"
+    printf '# %s menu\n' "${label}"
+    printf '# Generated file, do not edit!!!\n'
+    printf '\n'
+    printf 'choice GEN_CHOICE_%s\n' "${cfg_prefix}"
+    printf '    bool\n'
+    printf '    prompt "%s"\n' "${label}"
+    printf '\n'
+    for entry in `get_components ${base_dir}`; do
+        file="${base_dir}/${entry}.in"
+        _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
+        printf 'config %s_%s\n' "${cfg_prefix}" "${_entry}"
+        printf '    bool\n'
+        printf '    prompt "%s"\n' "${entry}"
+        if [ "${cond}" = "Y" -o "${cond}" = "y" ]; then
+            printf '    depends on %s_%s_AVAILABLE\n' "${cfg_prefix}" "${_entry}"
+        fi
+        "${sed}" -r -e '/^## depends on /!d; s/^## /    /;' ${file} 2>/dev/null
+        "${sed}" -r -e '/^## select /!d; s/^## /    /;' ${file} 2>/dev/null
+        if "${grep}" -E '^## help' ${file} >/dev/null 2>&1; then
+            printf '    help\n'
+            "${sed}" -r -e '/^## help ?/!d; s/^## help ?/      /;' ${file} 2>/dev/null
+        fi
+        printf '\n'
+    done
+    printf 'endchoice\n'
+
+    for entry in `get_components ${base_dir}`; do
+        file="${base_dir}/${entry}.in"
+        _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
+        printf '\n'
+        if [ "${cond}" = "Y" -o "${cond}" = "y" ]; then
+            printf 'config %s_%s_AVAILABLE\n' "${cfg_prefix}" "${_entry}"
+            printf '    bool\n'
+            printf '    default y if'
+            printf ' BACKEND_%s = "%s"' "${cfg_prefix}" "${entry}"
+            printf ' || BACKEND_%s = ""' "${cfg_prefix}"
+            printf ' || ! BACKEND\n'
+        fi
+        printf 'if %s_%s\n' "${cfg_prefix}" "${_entry}"
+        printf 'config %s\n' "${cfg_prefix}"
+        printf '    default "%s" if %s_%s\n' "${entry}" "${cfg_prefix}" "${_entry}"
+        printf 'source "%s"\n' "${file}"
+        printf 'endif\n'
+    done
+
+    # Generate the part-2
+    exec >"${out_file}.2"
+    printf '# %s second part options\n' "${label}"
+    printf '# Generated file, do not edit!!!\n'
+    for entry in `get_components ${base_dir}`; do
+        file="${base_dir}/${entry}.in"
+        _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
+        if [ -f "${file}.2" ]; then
+            printf '\n'
+            printf 'if %s_%s\n' "${cfg_prefix}" "${_entry}"
+            printf 'comment "%s other options"\n' "${entry}"
+            printf 'source "%s.2"\n' "${file}"
+            printf 'endif\n'
+        fi
+    done
+}
+
+# Generate a menuconfig
+# See above for usage
+gen_menu() {
+    local out_file="${1}"
+    local label="${2}"
+    local cfg_prefix="${3}"
+    local base_dir="${4}"
+    local file entry _entry
+
+    # Generate the menuconfig
+    exec >"${out_file}"
+    printf '# %s menu\n' "${label}"
+    printf '# Generated file, do not edit!!!\n'
+    printf '\n'
+    for entry in `get_components ${base_dir}`; do
+        file="${base_dir}/${entry}.in"
+        _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
+        printf 'menuconfig %s_%s\n' "${cfg_prefix}" "${_entry}"
+        printf '    bool\n'
+        if "${grep}" -E '^## default' ${file} >/dev/null 2>&1; then
+            "${sed}" -r -e '/^## default ?/!d; s/^## default ?/    default /;' ${file} 2>/dev/null
+        fi
+        printf '    prompt "%s"\n' "${entry}"
+        "${sed}" -r -e '/^## depends on /!d; s/^## /    /;' ${file} 2>/dev/null
+        "${sed}" -r -e '/^## select /!d; s/^## /    /;' ${file} 2>/dev/null
+        if "${grep}" -E '^## help' ${file} >/dev/null 2>&1; then
+            printf '    help\n'
+            "${sed}" -r -e '/^## help ?/!d; s/^## help ?/      /;' ${file} 2>/dev/null
+        fi
+        printf '\n'
+        printf 'if %s_%s\n' "${cfg_prefix}" "${_entry}"
+        printf 'source "%s"\n' "${file}"
+        printf 'endif\n'
+        printf '\n'
+    done
+}
+
+mkdir -p config/gen
+gen_choice config/gen/arch.in "Target Architecture" "ARCH" "config/arch" "Y"
+gen_choice config/gen/kernel.in "Target OS" "KERNEL" "config/kernel" "Y"
+gen_choice config/gen/cc.in "Compiler" "CC" "config/cc" "N"
+gen_choice config/gen/binutils.in "Binutils" "BINUTILS" "config/binutils" "N"
+gen_choice config/gen/libc.in "C library" "LIBC" "config/libc" "Y"
+gen_menu config/gen/debug.in "Debug facilities" "DEBUG" "config/debug"
+gen_menu config/gen/companion_tools.in "Companion tools" "COMP_TOOLS" "config/companion_tools"