crosstool-ng/configure
Yann E. MORIN" f7a05d343a configure: do not require svn
svn is needed to download eglibc from the upstream repository.
In some situations, though, it can happen that:
 - the developpers' machines do not have svn
 - a LAN mirror has been set-up with pre-downloaded eglibc tarballs
In this case, it makes sense not to hard-depend on svn.

So, if svn is missing, just say so, and add a comment in the
menuconfig.

Reported-by: ANDY KENNEDY <ANDY.KENNEDY@adtran.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
2011-08-01 22:46:57 +02:00

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#!/bin/sh
myname="${0##*/}"
VERSION=$( cat .version )
DATE=$( date +%Y%m%d )
PREFIX_DEFAULT=/usr/local
BINDIR_set=
LIBDIR_set=
DOCDIR_set=
MANDIR_set=
LOCAL_set=
FORCE=
do_quit=
# Simply print the error message, and exit. Obvious, he?
do_error() {
printf "${myname}: ${@}\n"
exit 1
}
# Given an option string and the following argument,
# echoes the value of the option.
# If --var=val => echoes val and returns 0, meaning second arg was not consumed
# If --var val => echoes val and returns non null, meaning second arg was used
get_optval(){
case "$1" in
--*=?*)
printf "${1#*=}"
return 0
;;
*)
printf "${2}"
return 1
;;
esac
}
# The set_xxx functions will set the corresponding configuration variable
# They return 0 if second arg was not consumed, and non-zero if it was consumed.
set_prefix() {
PREFIX="$( get_optval "$1" "$2" )"
}
set_bindir() {
BINDIR_set=1
BINDIR="$( get_optval "$1" "$2" )"
}
set_libdir() {
LIBDIR_set=1
LIBDIR="$( get_optval "$1" "$2" )"
}
set_docdir() {
DOCDIR_set=1
DOCDIR="$( get_optval "$1" "$2" )"
}
set_mandir() {
MANDIR_set=1
MANDIR="$( get_optval "$1" "$2" )"
}
set_tool() {
local var_name="${1%%=*}"
var_name="${var_name#--with-}"
eval ${var_name}="\$( get_optval "$1" "$2" )"
}
# var_list is a list of variables, each one holding a path to a
# tool, either detected by ./configure, or specified by the user.
var_list=""
kconfig_list=""
# This function adds a variable name to the above list of variable names.
# $1: the name of the variable to add to the list
add_to_var_list() {
local v
for v in ${var_list}; do
[ "${v}" = "${1}" ] && return 0
done
var_list="${var_list} ${1}"
}
add_to_kconfig_list() {
local k
for k in ${kconfig_list}; do
[ "${k}" = "${1}" ] && return 0
done
kconfig_list="${kconfig_list} ${1}"
}
# A function to test for required tools/headers/libraries
# Return 0 (true) if found, !0 (false) if not found
#
# $*: [prog|inc|lib]=<name[ name...]>
# the name(s) of tool(s) to test for
# mandatory
# eg: prog=bash prog="curl wget"
# $*: var=<var_name>
# the name of the variable to test and set
# optional
# eg: var=bash if ${bash} is set and non-null, use that,
# else check for bash and set bash=$(which bash)
# $*: ver=<regexp>
# for each 'prog', test if $(prog --version) matches 'regexp'
# optional
# eg: ver='^GNU bash, version [34]\.'
# $*: lib_exts=<extension[ extension...]>
# the list of allowed library extension
# mandatory
# eg: lib_exts="so dylib" lib_exts="so dylib a"
# $*: err=<error_message>
# the error message to print if tool is missing
# optional, defaults to: '${prog}: none found'
# eg: err="'bash' 3.x or above was not found"
# Note: err may be printed by caller, not us
# $*: kconfig=<var_name>
# the name of a variable to pass down to kconfig if
# the prog/inc/lib was found
# optional, defaults to none
# eg: kconfig=has_libncurses
# $*: skip=[y|n|]
# if set to 'y', skip the test, but still register the
# kconfig and var variables; if 'n' or empty, do the
# test.
# optional, default to 'n'
# eg: skip="${static_link_ko}"
check_for() {
local lib_exts
local skip
local val
local item
local where
local status
local ext
# Note: prog/inc/lib and var/kconfig/ver/err are set here,
# but declared by the caller (because it needs it)
for item in "${@}"; do
case "${item}" in
prog=*|inc=*|lib=*|var=*|ver=*|err=*|kconfig=*|lib_exts=*|skip=*)
eval ${item%%=*}=\"${item#*=}\"
;;
*) do_error "check_for: incorrect parameters: '${item}'";;
esac
done
case "${prog}:${inc}:${lib}" in
?*:?*:|?*::?*|:?*:?*|?*:?*:?*)
if [ -n "${var}" ]; then
do_error "check_for: the use of var is not compatible with passing several of [prog|inc|lib] at once"
fi
;;
::) do_error "check_for: [prog|inc|lib] is mandatory";;
esac
if [ -n "${var}" ]; then
add_to_var_list "${var}"
fi
if [ -n "${kconfig}" ]; then
add_to_kconfig_list "${kconfig}"
fi
if [ "${skip}" = "y" ]; then
return 0
fi
if [ -n "${prog}" ]; then
for item in ${prog}; do
printf "Checking for '${item}'... "
if [ -n "${var}" ]; then
eval val="\${${var}}"
if [ -n "${val}" ]; then
status="${val} (cached)\n"
break
fi
fi
where="$( which "${item}" 2>/dev/null )"
if [ -z "${where}" ]; then
printf "no\n"
continue
elif [ -n "${ver}" ]; then
str=$( LC_ALL=C "${where}" --version 2>&1 \
|grep -E "${ver}" \
|head -n 1
)
if [ -z "${str}" ]; then
printf "no\n"
unset where
continue
fi
fi
status="${where}"
break
done
if [ -z "${status}" ]; then
return 1
fi
printf "${status}\n"
unset status
fi
if [ -n "${inc}" ]; then
for item in ${inc}; do
printf "Checking for '${item}'... "
if printf "#include \"${item}\"" |gcc -x c -c - -o /dev/null >/dev/null 2>&1; then
where="${item}"
status=yes
break;
fi
printf "no\n"
done
if [ -z "${status}" ]; then
return 1
fi
printf "${status}\n"
unset status
fi
if [ -n "${lib}" ]; then
if [ -z "${lib_exts}" ]; then
do_error "check_for: no library extension specified for '${lib}'"
fi
for item in ${lib}; do
for ext in ${lib_exts}; do
printf "Checking for '${item}.${ext}'... "
where="$( gcc -print-file-name="${item}.${ext}" )"
if [ "${where}" != "${item}.${ext}" ]; then
where="$( readlink "${where}" )"
status=yes
break 2;
fi
printf "no\n"
done
done
if [ -z "${status}" ]; then
return 1
fi
printf "${status}\n"
unset status
fi
if [ -n "${var}" ]; then
eval ${var}='"'"${where}"'"'
fi
if [ -n "${kconfig}" ]; then
eval ${kconfig}=y
fi
}
# This function checks for a tool, and aborts if not found
# See check_for(), above, for how to call has_or_abort
has_or_abort() {
# We declare these 6 variables here, although they are
# set in check_for(), called below
local prog inc lib
local var ver err kconfig
if ! check_for "$@"; then
printf " * A mandatory dependency is missing, or version mis-match:\n"
printf " * - ${err:-${prog}${inc}${lib}: none found}\n"
if [ -n "${var}" ]; then
printf " * --> You can give the path to this tool using: --with-${var}=PATH\n"
fi
printf "\n"
# Bail out if --force is not specified
[ -z "${FORCE}" ] && do_error "Bailing out..."
printf "<* *>\n"
printf "<* FORCE in action: *>\n"
printf "<* Continuing despite missing pre-requisite *>\n"
printf "<* Prepare for breakage *>\n"
printf "<* *>\n"
printf "\n"
fi
}
# This function checks for a tool, and warns if not found
# See check_for(), above, for how to call has_or_abort
# Note: if err is not set, then no error message is printed
has_or_warn() {
# We declare these 6 variables here, although they are
# set in check_for(), called below
local prog inc lib
local var ver err kconfig
if ! check_for "$@"; then
printf " * An optional dependency is missing, some features will be disabled"
printf "${err:+:\n * - ${err}}\n"
if [ -n "${var}" ]; then
printf " * --> You can give the path to this tool using: --with-${var}=PATH\n"
fi
fi
}
do_help() {
cat <<__EOF__
\`configure' configures crosstool-NG-${VERSION} to adapt to many kind of systems.
USAGE: ./configure [OPTION]...
Defaults for the options are specified in brackets.
Configuration:
-h, --help display this help and exit
--force force configure to continue, even in case
some pre-requisites are missing
Installation directories:
--prefix=PREFIX install files in PREFIX [${PREFIX_DEFAULT}]
--local don't install, and use current directory
By default, \`make install' will install all the files in
\`${PREFIX_DEFAULT}/bin', \`${PREFIX_DEFAULT}/lib' etc. You can specify
an installation prefix other than \`${PREFIX_DEFAULT}' using \`--prefix',
for instance \`--prefix=\${HOME}'.
For better control, use the options below.
Fine tuning of the installation directories:
--bindir=DIR user executables [PREFIX/bin]
--libdir=DIR object code libraries [PREFIX/lib]
--docdir=DIR info documentation [PREFIX/share/doc]
--mandir=DIR man documentation [PREFIX/share/man]
Optional Features:
--with-install=PATH Specify the full PATH to GNU install
--with-make=PATH Specify the full PATH to GNU make >= 3.80
--with-grep=PATH Specify the full PATH to GNU grep
--with-sed=PATH Specify the full PATH to GNU sed
--with-bash=PATH Specify the full PATH to bash >= 3.0
__EOF__
}
#---------------------------------------------------------------------
# Set user's options
while [ $# -ne 0 ]; do
case "$1" in
--local) LOCAL_set="y"; shift;;
--prefix*) set_prefix "$1" "$2" && shift || shift 2;;
--bindir*) set_bindir "$1" "$2" && shift || shift 2;;
--libdir*) set_libdir "$1" "$2" && shift || shift 2;;
--docdir*) set_docdir "$1" "$2" && shift || shift 2;;
--mandir*) set_mandir "$1" "$2" && shift || shift 2;;
--with-*) set_tool "$1" "$2" && shift || shift 2;;
--force) FORCE=1; shift;;
--help|-h) do_help; exit 0;;
# Skip, auto-stuff compatibility
--build=*|--host=*|--infodir=*|--datadir=*|--sysconfdir=*|--localstatedir=*) shift;;
--build|--host|--infodir|--datadir|--sysconfdir|--localstatedir) shift 2;;
--enable-shared|--disable-shared|--enable-static|--disable-static) shift;;
*) printf "Unrecognised option: '${1}'\n"; do_help; exit 1;;
esac
done
# Use defaults
[ -z "${PREFIX}" ] && set_prefix "" "${PREFIX_DEFAULT}"
# Special case when installing locally
if [ "${LOCAL_set}" = "y" ]; then
set_prefix "" "$( pwd )"
set_bindir "" "$( pwd )"
set_libdir "" "$( pwd )"
set_docdir "" "$( pwd )/docs"
set_mandir "" "$( pwd )/docs"
fi
#---------------------------------------------------------------------
# Some sanity checks, now
# We check for grep and sed manually, because they are used in check_for()
printf "Checking for 'grep'... "
if [ -n "${grep}" ]; then
printf "${grep} (cached)\n"
else
grep="$( which grep 2>/dev/null )"
if [ -z "${grep}" ]; then
printf "not found\n"
else
printf "${grep}\n"
printf "Checking whether '${grep}' supports -E... "
if echo 'foo' |"${grep}" -E 'foo' >/dev/null 2>&1; then
printf "yes\n"
else
printf "no\n"
grep=
fi
fi
fi
if [ -z "${grep}" ]; then
printf "Either you are missing entirely the needed tool,\n"
printf "or the version you have is too old.\n"
printf "You can give the path to this tool using: --with-grep=PATH\n"
do_error "Bailing out..."
fi
add_to_var_list grep
printf "Checking for 'sed'... "
if [ -n "${sed}" ]; then
printf "${sed} (cached)\n"
else
sed="$( which sed 2>/dev/null )"
if [ -z "${sed}" ]; then
printf "not found\n"
else
printf "${sed}\n"
printf "Checking whether '${sed}' supports -i and -e... "
touch .ct-ng.sed.test
if "${sed}" -r -i -e 's/foo/bar/' .ct-ng.sed.test >/dev/null 2>&1; then
printf "yes\n"
else
printf "no\n"
sed=
fi
rm -f .ct-ng.sed.test
fi
fi
if [ -z "${sed}" ]; then
printf "Either you are missing entirely the needed tool,\n"
printf "or the version you have is too old.\n"
printf "You can give the path to this tool using: --with-sed=PATH\n"
do_error "Bailing out..."
fi
add_to_var_list sed
# The regular list of tools we can now easily check for
has_or_abort prog=bash \
var=bash \
ver='^GNU bash, version (3\.[1-9]|4)' \
err="'bash' 3.1 or above was not found"
has_or_abort prog=cut
has_or_abort prog=install var=install
has_or_abort prog=make \
var=make \
ver='^GNU Make (3.[89][[:digit:]]|[4-9])' \
err="GNU 'make' 3.80 or above was not found"
has_or_abort prog=gcc
has_or_abort prog="awk gawk" ver='^GNU Awk' err="GNU 'awk' was not found"
has_or_abort prog=bison
has_or_abort prog=flex
has_or_abort prog=makeinfo
has_or_abort prog=automake \
ver='\(GNU automake\) (1\.[[:digit:]]{2,}|[2-9][[:digit:]]*\.)' \
err="'automake' 1.10 or above was not found"
has_or_abort prog=libtool \
var=libtool \
ver='\(GNU libtool.*\) (2[[:digit:]]*\.|1\.6[[:digit:]]*\.|1\.5\.[2-9][[:digit:]]+)' \
err="'libtool' 1.5.26 or above was not found"
has_or_abort prog=stat
has_or_abort prog="curl wget"
has_or_abort prog=patch
has_or_abort prog=tar
has_or_abort prog=gzip
has_or_abort prog=bzip2
has_or_abort prog=lzma
has_or_abort prog=readlink
has_or_abort prog=objcopy var=objcopy
has_or_abort prog=objdump var=objdump
has_or_abort prog=readelf var=readelf
has_or_abort prog=patch var=patch
has_or_warn prog=cvs \
kconfig=has_cvs \
err="it will not be possible to use newlib cvs snapshots"
has_or_warn prog=svn \
kconfig=has_svn \
err="subversion is required to download eglibc"
# Host system checks
printf "Checking for host system... "
host="$( uname -s )"
printf "%s\n" "${host}"
case "${host}" in
Linux) ;;
Cygwin) ;;
*)
printf " * Runing under %s is not fully tested\n" "${host}"
printf " * You may encounter some weird behavior\n"
;;
esac
printf "Checking if static linking is possible... "
static_link_ok=""
case "${host}" in
Darwin) ;;
*) tmp=.static.tmp
if gcc -xc - -static -o "${tmp}" >/dev/null 2>&1 <<-_EOF_
int main() { return 0; }
_EOF_
then
static_link_ok="y"
fi
rm -f "${tmp}"
;;
esac
if [ "${static_link_ok}" = "y" ]; then
static_link_ko=""
printf "yes\n"
else
static_link_ko="y"
printf "no\n"
printf " * An optional host feature is missing, some features will be disabled:\n"
printf " * - It will not be possible to statically link toolchain's binaries\n"
fi
add_to_kconfig_list static_link_ok
# Library checks
libs_exts="so dylib"
if [ "${static_link_ok}" = "y" ]; then
libs_exts="${libs_exts} a"
fi
ncurses_hdrs="ncurses/ncurses.h ncurses/curses.h ncurses.h curses.h"
ncurses_libs="libncursesw libncurses libcurses"
has_or_abort lib="${ncurses_libs}" \
lib_exts="${libs_exts}" \
inc="${ncurses_hdrs}" \
err="The 'ncurses' library is needed fo the menuconfig frontend"
has_or_abort lib="libstdc++" \
lib_exts="${libs_exts}" \
err="The 'libstdc++' library is needed to build gcc"
# Yes, we may be checking twice for libstdc++.a
# The first is because we need one instance of libstdc++ (shared or static)
# because it is needed for PPL; the second is because the static version is
# required for static-linking, and if missing, the option is removed.
has_or_warn lib="libstdc++" \
lib_exts="a" \
err="static 'libstdc++' is needed to statically link the toolchain's executables" \
kconfig=has_static_libstdcxx \
skip="${static_link_ko}"
has_or_warn inc="expat.h" \
lib="libexpat" \
lib_exts="${libs_exts}" \
err="The 'expat' header file and library are needed to link cross-gdb's executables" \
kconfig=has_expat
# Yes, we may be checking twice for libexpat.a
# The first is because we need one instance of libexpat (shared or static)
# because it is needed for cross-gdb; the second is because the static version
# is required for static-linking, and if missing, the option is removed.
has_or_warn lib="libexpat" \
lib_exts="a" \
err="static 'expat' is needed to statically link cross-gdb's executables" \
kconfig=has_static_expat \
skip="${static_link_ko}"
for v in 7 6 5 4; do
python_incs="${python_incs} python2.${v}/Python.h"
python_libs="${python_libs} libpython2.${v}"
done
has_or_warn inc="${python_incs}" \
lib="${python_libs}" \
lib_exts="${libs_exts}" \
err="The 'python' header file and library are needed for some features of cross-gdb"
#---------------------------------------------------------------------
# Compute the version string
# If this version is n hg clone, try to get the revision number
# If we can't get the revision number, use date
printf "\nComputing version string... "
case "${VERSION}" in
*+hg|hg)
REVISION="$( hg id -n 2>/dev/null || true )"
case "${REVISION}" in
"")
VERSION="${VERSION}_unknown@$( date +%Y%m%d.%H%M%S )";;
*)
VERSION="${VERSION}_$( hg id -b )@${REVISION%%+}_$( hg id -i )"
;;
esac
# Arrange to have no / in the directory name, no need to create an
# arbitrarily deep directory structure
VERSION="$( printf "${VERSION}\n" |"${sed}" -r -e 's|/+|_|g;' )"
;;
esac
printf "${VERSION}\n"
#---------------------------------------------------------------------
# Compute and check install paths
# Now we have the version string, we can build up the paths
[ -z "${BINDIR_set}" ] && BINDIR="${PREFIX}/bin"
[ -z "${LIBDIR_set}" ] && LIBDIR="${PREFIX}/lib"
[ -z "${DOCDIR_set}" ] && DOCDIR="${PREFIX}/share/doc"
[ -z "${MANDIR_set}" ] && MANDIR="${PREFIX}/share/man"
# Install support files in our own sub-dir, so as not to mangle (system)
# files and dirs, but only if not --local
if [ -z "${LOCAL_set}" ]; then
LIBDIR="${LIBDIR}/ct-ng-${VERSION}"
DOCDIR="${DOCDIR}/ct-ng-${VERSION}"
fi
# Check that install PATHs are absolute
for p in BIN LIB DOC MAN; do
var="${p}DIR"
eval v='"${'"${var}"'}"'
case "${v}" in
/*) ;;
*) do_error "'${var}' is not an absolute path: '${v}'"
esac
done
#---------------------------------------------------------------------
# That's all, folks!
printf "Building up Makefile... "
var_sed="$( for var_name in ${var_list}; do
eval echo 's,@@${var_name}@@,${'"${var_name}"'},g'
done
)"
kconfig_sed="s/@@KCONFIG@@/$( for k_name in ${kconfig_list}; do
eval printf \"${k_name}=\${${k_name}} \"
done
)/"
"${sed}" -r -e "s,@@BINDIR@@,${BINDIR},g" \
-e "s,@@LIBDIR@@,${LIBDIR},g" \
-e "s,@@DOCDIR@@,${DOCDIR},g" \
-e "s,@@MANDIR@@,${MANDIR},g" \
-e "s,@@VERSION@@,${VERSION},g" \
-e "s,@@DATE@@,${DATE},g" \
-e "s,@@LOCAL@@,${LOCAL_set},g" \
-e "${var_sed}" \
-e "${kconfig_sed}" \
Makefile.in \
>Makefile
echo "done"
cat <<__EOF__
crosstool-NG configured as follows:
PREFIX='${PREFIX}'
BINDIR='${BINDIR}'
LIBDIR='${LIBDIR}'
DOCDIR='${DOCDIR}'
MANDIR='${MANDIR}'
Now run:
make
__EOF__
if [ "${LOCAL_set}" != "y" ]; then
printf " make install\n"
fi