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crosstool-ng/configure.ac
Alexey Neyman 30c91131a1 Bump autoconf requirement to 2.65 
Required by automake 1.15.

Signed-off-by: Alexey Neyman <stilor@att.net>
2017-01-29 21:39:44 -08:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.67])
AC_INIT(
[crosstool-NG],
[m4_esyscmd_s([git describe --always --dirty])],
[crossgcc@sourceware.org])
AC_CONFIG_AUX_DIR([scripts])
#--------------------------------------------------------------------
# A few helper macros
# ACX_WITH_DEPRECATED(PROG, VAR)
# Declare a deprecated --with option: instead of --with-PROG=xxx, must use VAR=xxx
AC_DEFUN(
[ACX_WITH_DEPRECATED],
[AC_ARG_WITH([$1],
[AS_HELP_STRING([--with-$1=PATH],
[Deprecated; use $2=PATH instead])],
[AC_MSG_ERROR([--with-$1=$withval deprecated; use $2=$withval instead])])
])
# Check for required tool
AC_DEFUN(
[ACX_CHECK_TOOL_REQ],
[AC_CHECK_TOOLS([$1], [$2])
AS_IF(
[test -z "$$1"],
[AC_MSG_ERROR([missing required tool: $2])])
])
# Check for required tool, set variable to full pathname
AC_DEFUN(
[ACX_PATH_TOOL_REQ],
[ACX_WITH_DEPRECATED([$3], [$1])
AC_ARG_VAR([$1], [Specify the full path to GNU $3])
ACX_CHECK_TOOL_REQ([$1], [$2])
AS_CASE(
[$$1],
[/*],,
[?*],[AC_MSG_CHECKING([for absolute path to $$1])
$1=$(which $$1)
AC_MSG_RESULT([$$1])])])
# Check for required program
AC_DEFUN(
[ACX_CHECK_PROGS_REQ],
[AC_CHECK_PROGS([$1], [$2])
AS_IF(
[test -z "$$1"],
[AC_MSG_ERROR([missing required tool: $2])])
])
# Check for path to required program
AC_DEFUN(
[ACX_PATH_PROGS_REQ],
[AC_PATH_PROGS([$1], [$2])
AS_IF(
[test -z "$$1"],
[AC_MSG_ERROR([missing required tool: $2])])
])
# Set the kconfig option
AC_DEFUN(
[ACX_SET_KCONFIG_OPTION],
[AS_IF(
[test -n "$$1"],
[kconfig_options="$kconfig_options has_$1=y"],
[kconfig_options="$kconfig_options has_$1"])
])
# Check if a given program is available with a particular version.
# ACX_PROG_VERSION(VAR, HELP, PROG, SRCH, VERSION_CHECK[, CONFIG_OPT])
# Search for PROG under possible names of SRCH. Allow user overrides in variable
# VAR; display HELP message. Try to find a version that satisfies VERSION_CHECK
# regexp; if that is achieved, set CONFIG_OPT in the kconfig. Otherwise, settle
# for any version found.
# Sets acx_version_VAR_ok to ':' if the version met the criterion, or false otherwise.
AC_DEFUN(
[ACX_PROG_VERSION],
[AS_IF([test -z "$EGREP"],
[AC_MSG_ERROR([This macro can only be used after checking for EGREP])])
ACX_WITH_DEPRECATED([$3], [$1])
AC_ARG_VAR([$1], [Specify the full path to $2])
acx_version_$1_ok=false
AC_CACHE_CHECK([for $3], [ac_cv_path_$1],
[AC_PATH_PROGS_FEATURE_CHECK([$1], [$4],
[[ver=`$ac_path_$1 --version 2>/dev/null| $EGREP $5`
test -z "$ac_cv_path_$1" && ac_cv_path_$1=$ac_path_$1
test -n "$ver" && ac_cv_path_$1="$ac_path_$1" ac_path_$1_found=: acx_version_$1_ok=:]])])
AS_IF([test -n "$1"],
[[ver=`$ac_path_$1 --version 2>/dev/null| $EGREP $5`
test -n "$ver" && acx_version_$1_ok=:]])
AC_MSG_CHECKING([for $2])
AS_IF([$acx_version_$1_ok],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
AC_SUBST([$1], [$ac_cv_path_$1])
AS_IF([test -n "$6"],
[AS_IF([$acx_version_$1_ok], [$6=y], [$6=])
ACX_SET_KCONFIG_OPTION([$6])])
])
# Same as above, but make it a fatal error if the tool is not found at all
# (i.e. "require any version, prefer version X or newer")
AC_DEFUN(
[ACX_PROG_VERSION_REQ_ANY],
[ACX_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
AS_IF([test -z "$$1"],
[AC_MSG_ERROR([Required tool not found: $3])])
])
# Same, but also require the version check to pass
# (i.e. "require version X or newer")
AC_DEFUN(
[ACX_PROG_VERSION_REQ_STRICT],
[ACX_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
AS_IF([test -z "$$1" || ! $acx_version_$1_ok],
[AC_MSG_ERROR([Required tool not found: $2])])
])
#--------------------------------------------------------------------
# Allow dummy --{en,dis}able-{static,shared}
AC_ARG_ENABLE(
[local],
[AS_HELP_STRING(
[--enable-local],
[do not install, and use current directory])])
AC_SUBST([enable_local], [${enable_local:-no}])
# FIXME: I don't know why we have this. Will remove after the next
# release.
AC_ARG_ENABLE(
[shared],
[AS_HELP_STRING(
[--enable-shared],
[build shared libraries (deprecated, ignored)])])
AC_ARG_ENABLE(
[static],
[AS_HELP_STRING(
[--enable-static],
[build static libraries (deprecated, ignored)])])
#---------------------------------------------------------------------
# Check for --build and --host...
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
# ... but refuse --target
AS_IF([test -n "$target_alias"],
AC_MSG_ERROR([--target is not allowed]))
# Allow program name tranformation (--program-{prefix,suffix,transform-name})
AC_ARG_PROGRAM
#---------------------------------------------------------------------
# Initial checks that are usually done first (I don't know why, that's
# just what I seem to experience...)
#---------------------------------------------------------------------
ACX_WITH_DEPRECATED([install], [INSTALL])
AC_ARG_VAR([INSTALL], [Specify the full path to a BSD-compatible install])
AC_PROG_INSTALL
ACX_WITH_DEPRECATED([grep], [GREP])
AC_ARG_VAR([INSTALL], [Specify the full path to GNU grep])
AC_PROG_GREP
AC_PROG_EGREP
AS_IF([test "$EGREP" != "$GREP -E"],
[AC_MSG_ERROR([egrep is not $GREP -E])])
ACX_WITH_DEPRECATED([sed], [SED])
AC_ARG_VAR([INSTALL], [Specify the full path to GNU sed])
AC_PROG_SED
AC_MSG_CHECKING([whether sed understands -r -i -e])
echo foo > .ct-ng.sed.test
${SED} -r -i -e 's/f(o)o/b\1ar/' .ct-ng.sed.test >/dev/null 2>&1
rc=$?
content=`cat .ct-ng.sed.test`
rm -f .ct-ng.sed.test
AS_IF([test "$rc:$content" = "0:boar"],
[AC_MSG_RESULT([yes])],
[AC_MSG_ERROR([sed does not accept -r -i -e])])
AC_PROG_LN_S
#--------------------------------------------------------------------
# A bunch of boring tests...
#--------------------------------------------------------------------
AC_PROG_CC
AS_IF([test -z "$CC"],
[AC_MSG_ERROR([no suitable compiler found])])
AC_PROG_CPP
#---------------------------------------------------------------------
# Check to see if the compiler can link statically
AC_MSG_CHECKING([if $CC can static link])
echo "int main() {}" | ${CC} -static -o /dev/null -xc - > /dev/null 2>&1
static_test=$?
AS_IF([test $static_test -eq 0],
[static_link=y
AC_MSG_RESULT([yes])],
[test $static_test -ne 0],
[static_link=
AC_MSG_RESULT([no])])
ACX_SET_KCONFIG_OPTION([static_link])
AC_PROG_RANLIB
ACX_PATH_TOOL_REQ([OBJCOPY], [gobjcopy objcopy], [objcopy])
ACX_PATH_TOOL_REQ([OBJDUMP], [gobjdump objdump], [objdump])
ACX_PATH_TOOL_REQ([READELF], [greadelf readelf], [readelf])
ACX_PATH_TOOL_REQ([GPERF], [gperf], [gperf])
ACX_CHECK_PROGS_REQ([bison], [bison])
ACX_CHECK_PROGS_REQ([flex], [flex])
ACX_CHECK_PROGS_REQ([makeinfo], [makeinfo])
ACX_CHECK_PROGS_REQ([cut], [cut])
ACX_CHECK_PROGS_REQ([stat], [stat])
ACX_CHECK_PROGS_REQ([readlink], [readlink])
ACX_CHECK_PROGS_REQ([wget], [wget])
ACX_CHECK_PROGS_REQ([tar], [tar])
ACX_CHECK_PROGS_REQ([gzip], [gzip])
ACX_CHECK_PROGS_REQ([bzip2], [bzip2])
ACX_CHECK_PROGS_REQ([help2man], [help2man])
#--------------------------------------------------------------------
# Still boring, but remember the path, now...
#--------------------------------------------------------------------
ACX_PATH_TOOL_REQ([PATCH], [gpatch patch], [patch])
#--------------------------------------------------------------------
# And a bunch of less boring tests...
#--------------------------------------------------------------------
# We need a bash that is >= 3.1
ACX_PROG_VERSION_REQ_STRICT([BASH_SHELL],
[GNU bash >= 3.1],
[bash],
[bash],
['^GNU bash, version (3\.[1-9]|4)'])
# We need a awk that *is* GNU awk
ACX_PROG_VERSION_REQ_STRICT([AWK],
[GNU awk],
[awk],
[gawk awk],
['^GNU Awk '])
# FIXME This checks for tools at the time configure runs. If a tool is later updated
# to satisfy our version requirement, we still won't be able to see that. Or worse,
# downgraded/removed. We should check this and update configure.in options right
# before running kconfig. Our configure should only check for stuff needed to
# build/install crosstool-ng itself.
#----------------------------------------
# Check for GNU make (want 3.81 or above, but will accept as long as any make is found)
ACX_PROG_VERSION_REQ_ANY([MAKE],
[GNU make >= 3.81],
[make],
[gmake make],
['^GNU Make (3\.8[1-9]|3\.9[0-9]|[4-9]\.)'],
[make_3_81_or_newer])
# Check other companion tools that we may or may not build
ACX_PROG_VERSION([LIBTOOL],
[GNU libtool >= 2.4],
[libtool],
[glibtool libtool],
['^libtool \(GNU libtool\) ([3-9]\.|2.[4-9]|2.[1-3][0-9])'],
[libtool_2_4_or_newer])
ACX_PROG_VERSION([LIBTOOLIZE],
[GNU libtoolize >= 2.4],
[libtoolize],
[glibtoolize libtoolize],
['^libtoolize \(GNU libtool\) ([3-9]\.|2.[4-9]|2.[1-3][0-9])'],
[libtoolize_2_4_or_newer])
ACX_PROG_VERSION([AUTOCONF],
[GNU autoconf >= 2.65],
[AUTOCONF],
[autoconf],
['^autoconf \(GNU Autoconf\) ([3-9]\.|2\.[7-9][0-9]|2\.6[5-9])'],
[autoconf_2_63_or_newer])
ACX_PROG_VERSION([AUTORECONF],
[GNU autoreconf >= 2.63],
[autoreconf],
[autoreconf],
['^autoreconf \(GNU Autoconf\) ([3-9]\.|2\.[7-9][0-9]|2\.6[3-9])'],
[autoreconf_2_63_or_newer])
ACX_PROG_VERSION([AUTOMAKE],
[GNU automake >= 1.15],
[automake],
[automake],
['automake \(GNU automake\) ([2-9]\.|1\.[2-9][0-9]|1\.1[5-9])'],
[automake_1_15_or_newer])
ACX_PROG_VERSION([M4],
[GNU m4 >= 1.4.12],
[m4],
[gm4 m4],
['^m4 \(GNU M4\) ([2-9]\.|1\.[5-9]|1\.[1-4][0-9]|1\.4\.[2-9][0-9]|1\.4\.1[2-9])'],
[gnu_m4_1_4_12_or_newer])
#----------------------------------------
# Gperf 3.1 started generating functions with size_t rather than unsigned int
AC_MSG_CHECKING([for the type used in gperf declarations])
echo "#include <string.h>" > conftest.gperf.c
echo "const char * in_word_set(const char *, GPERF_LEN_TYPE);" >> conftest.gperf.c
echo foo,bar | ${GPERF} -L ANSI-C >> conftest.gperf.c
AS_IF([${CC} -c -o /dev/null conftest.gperf.c -DGPERF_LEN_TYPE='size_t' >/dev/null 2>&1],
[AC_MSG_RESULT([size_t])
GPERF_LEN_TYPE='size_t'],
[${CC} -c -o /dev/null conftest.gperf.c -DGPERF_LEN_TYPE='unsigned int' >/dev/null 2>&1],
[AC_MSG_RESULT([unsigned int])
GPERF_LEN_TYPE='unsigned int'],
[AC_MSG_ERROR([unable to determine gperf len type])])
rm -f conftest.gperf.c
AC_SUBST([GPERF_LEN_TYPE])
#--------------------------------------------------------------------
# Boring again... But still a bit of work to do...
#--------------------------------------------------------------------
AC_SUBST([kconfig_options])
#----------------------------------------
AC_CHECK_PROGS([xz], [xz])
ACX_SET_KCONFIG_OPTION([xz])
AS_IF(
[test -z "$xz"],
[AC_CHECK_PROGS([lzma], [lzma])])
ACX_SET_KCONFIG_OPTION([lzma])
#----------------------------------------
AC_CHECK_PROGS([cvs], [cvs])
ACX_SET_KCONFIG_OPTION([cvs])
#----------------------------------------
AC_CHECK_PROGS([svn], [svn])
ACX_SET_KCONFIG_OPTION([svn])
AC_CHECK_PROGS([git], [git])
ACX_SET_KCONFIG_OPTION([git])
#--------------------------------------------------------------------
# Now, for some fun...
#--------------------------------------------------------------------
AC_C_INLINE
AC_HEADER_STDC
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_FUNC_ALLOCA
#----------------------------------------
# Check for gettext and libintl for the kconfig frontends
AC_SUBST([gettext])
AC_CHECK_HEADERS(
[libintl.h],
[ac_ct_gettext_hdr=$ac_header; break])
AS_IF(
[test -n "$ac_ct_gettext_hdr"],
[AC_CHECK_DECL(
[gettext],
[gettext=y],,
[AC_INCLUDES_DEFAULT()
#include <$ac_ct_gettext_hdr>])])
SAVE_LIBS=$LIBS
AC_SEARCH_LIBS(bindtextdomain, intl, [test "$ac_res" = "none required" || INTL_LIBS="${ac_res}"])
LIBS=$SAVE_LIBS
AC_SUBST([INTL_LIBS])
#----------------------------------------
# Check for ncurses, for the kconfig frontends
AC_SUBST([ac_ct_curses_hdr])
AC_CHECK_HEADERS(
[ncurses/ncurses.h ncurses/curses.h ncursesw/curses.h ncurses.h curses.h],
[ac_ct_curses_hdr=$ac_header; break])
AS_IF(
[test -z "$ac_ct_curses_hdr"],
[AC_MSG_ERROR([could not find curses header, required for the kconfig frontends])])
AC_SEARCH_LIBS(
[initscr],
[ncursesw ncurses curses],
[ac_ct_curses_lib_found=yes; break])
AS_IF(
[test -z "$ac_ct_curses_lib_found"],
[AC_MSG_ERROR([could not find curses library, required for the kconfig frontends])])
AC_SEARCH_LIBS(
[tgetent],
[termcap tinfo ncursesw ncurses curses])
#--------------------------------------------------------------------
# Lastly, take care of crosstool-NG internal values
#--------------------------------------------------------------------
# Hey! We need the date! :-)
AC_SUBST(
[DATE],
[$(date +%Y%m%d)])
# Decorate the version string if needed
AS_IF(
[test -f version.sh -a -x version.sh],
[V=$(./version.sh "${PACKAGE_VERSION}")])
AS_IF(
[test -n "${V}"],
[PACKAGE_VERSION="${V}"],
[AS_CASE(
[${PACKAGE_VERSION}],
[git|*+git],
[rev_id="$( git rev-parse --short HEAD )"
git diff-index --quiet HEAD || rev_id="${rev_id}-dirty"
PACKAGE_VERSION="${PACKAGE_VERSION}+${rev_id:-unknown-$( date +%Y%m%d.%H%M%S )}"
])])
# Arrange to have no / in the directory name, no need to create an
# arbitrarily deep directory structure
[PACKAGE_VERSION="$( printf "${PACKAGE_VERSION}\n" |"${SED}" -r -e 's:/+:_:g;' )"]
# Handle the local case
AC_SUBST([sublibdir])
AC_SUBST([subdocdir])
AS_IF(
[test "x$enable_local" = "xyes"],
[AC_MSG_NOTICE([overiding all of --prefix and the likes, because --enable-local was set])
prefix=$(pwd)
exec_prefix="$prefix"
bindir="$prefix"
libdir="$prefix"
sublibdir=""
docdir="$prefix""/docs"
subdocdir=""
datarootdir="$prefix"
mandir="$docdir"],
[sublibdir="/\${VERSION}"
subdocdir="/\${VERSION}"])
#--------------------------------------------------------------------
# Finally, generate the output file(s)
#--------------------------------------------------------------------
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
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