root/trunk/freewrt/scripts/scan-tools.sh

# $FreeWRT: src/share/misc/licence.template,v 1.20 2006/12/11 21:04:56 tg Rel $
#-
# Copyright (c) 2006, 2007
#       Thorsten Glaser <tg@mirbsd.de>
#
# Provided that these terms and disclaimer and all copyright notices
# are retained or reproduced in an accompanying document, permission
# is granted to deal in this work without restriction, including un-
# limited rights to use, publicly perform, distribute, sell, modify,
# merge, give away, or sublicence.
#
# Advertising materials mentioning features or use of this work must
# display the following acknowledgement:
#       This product includes material provided by Thorsten Glaser.
# This acknowledgement does not need to be reprinted if this work is
# linked into a bigger work whose licence does not allow such clause
# and the author of this work is given due credit in the bigger work
# or its accompanying documents, where such information is generally
# kept, provided that said credits are retained.
#
# This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
# the utmost extent permitted by applicable law, neither express nor
# implied; without malicious intent or gross negligence. In no event
# may a licensor, author or contributor be held liable for indirect,
# direct, other damage, loss, or other issues arising in any way out
# of dealing in the work, even if advised of the possibility of such
# damage or existence of a defect, except proven that it results out
# of said person's immediate fault when using the work as intended.
#-
# Scan for prerequisite host tools.

if test -z "$BASH_VERSION"; then
        echo FreeWRT requires GNU bash to be installed, sorry.
        exit 1
fi

shopt -s extglob
topdir=$(pwd)
opath=$PATH
out=0

if [[ $NO_ERROR != @(0|1) ]]; then
        echo Please do not invoke this script directly!
        exit 1
fi

set -e
rm -rf $topdir/lbin/tmp
mkdir -p $topdir/lbin/tmp
cd $topdir/lbin/tmp

rm -f foo
echo >FOO
if [[ -e foo ]]; then
        cat >&2 <<-EOF
                ERROR: FreeWRT cannot be built in a case-insensitive
                file system. Please use scripts/darwindiskimage on a
                Macintosh to create a case-sensitive filesystem image,
                or reconfigure your Windows system approprately.
        EOF
        exit 1
fi
rm -f FOO

os=$(uname)
case $os in
Darwin)
        # needs a bunch of quirks, but seems to compile
        echo Warning: Darwin support is highly experimental.
        echo
        ;;
Linux)
        # supported with no extra quirks at the moment
        ;;
MirBSD)
        # needs a little quirk, because the autoconf
        # version of some packages doesn't recognise
        # it as valid OS, and as build (not host) OS
        # faking OpenBSD is close enough
        rm -f $topdir/lbin/uname
        sed -e 's!@@FromOS@@!MirBSD!g' -e 's!@@ToOS@@!OpenBSD!g' \
            -e "s!@@PROG@@!$($topdir/lbin/which uname)!g" \
            <$topdir/scripts/uname.fake >$topdir/lbin/uname
        chmod 555 $topdir/lbin/uname
        ;;
NetBSD)
        echo "Building FreeWRT on $os is currently unsupported."
        echo "Sorry."
        echo
        echo There are unresolved issues relating to ncurses not
        echo being included in NetBSD®, and these provided by pkgsrc®
        echo lack important header files.
        ;;
OpenBSD)
        # supported with no extra quirks at the moment
        # although some packages' autoconf scripts may
        # not properly recognise OpenBSD
        ;;
*)
        # unsupported
        echo "Building FreeWRT on $os is currently unsupported."
        echo "Sorry."
        echo
        case $os in
        Cyg*)
                echo "The most prominent issue is that filesystems"
                echo "can be case-insensitive. Some macros are missing."
                echo
                ;;
        FreeBSD|DragonFly)
                echo "Building should succeed with relatively few"
                echo "patches, but perl must live in /usr/bin for"
                echo "now in FreeWRT, which should indeed be fixed."
                echo
                ;;
        esac
        echo "If you need FreeWRT building on $os, please contact"
        echo "the development team; there may be contractors available"
        echo "for this task. If you intend on turning $os into one of"
        echo "the supported build OSes, please contact us as well so"
        echo "that we can feed back your enhancements into FreeWRT."
        exit 1
        ;;
esac

set +e

if [[ ! -e $topdir/lbin/gmake ]]; then
        for f in $topdir/tools_build/gmake/make \
            "$($topdir/lbin/which gmake)" "$($topdir/lbin/which make)"; do
                [[ -e $f ]] || continue
                if [[ $f = $topdir/tools_build/gmake/make ]]; then
                        install -c -s -m 555 $f $topdir/lbin/gmake
                else
                        ln -s "$f" $topdir/lbin/gmake
                fi
                break
        done
fi
X=$($topdir/lbin/gmake --version 2>&1 | grep '^GNU Make' | \
    sed -e 's/GNU Make //' -e 's/version //' -e 's/, by.*$//')
[[ $X = +([0-9]).+([0-9]).+([0-9]) ]] && X=${X%.*}
if [[ $X = +([0-9]).+([0-9]) ]]; then
        let major=${X%.*}
        let minor=${X#*.}
elif [[ $X = +([0-9]).+([0-9])beta* ]]; then
        # Beta version is not "the real thing"
        let major=${X%.*}
        X=${X%beta*}
        let minor=${X#*.}-1
else
        let major=0
fi
if (( (major < 3) || ((major == 3) && (minor < 81)) )); then
        echo "---> building GNU make 3.81"
        rm -rf $topdir/tools_build/gmake $topdir/lbin/gmake
        set -e
        mkdir -p $topdir/tools_build/gmake
        cd $topdir/tools_build/gmake
        env CPPFLAGS="$CPPFLAGS -Dstrcmpi=strcasecmp" \
            CFLAGS="$(grep '^HOSTCFLAGS' $topdir/lbin/prereq.mk | \
                sed 's/HOSTCFLAGS:=//')" \
            $BASH $topdir/tools/gmake/configure \
            --program-prefix=g \
            --disable-dependency-tracking \
            --disable-nls \
            --without-libiconv-prefix \
            --without-libintl-prefix
        make all
        install -c -s -m 555 make $topdir/lbin/gmake
        set +e
        cd $topdir/lbin; ls -l gmake
        cd $topdir/lbin/tmp
fi
export PATH=$topdir/lbin:$PATH

cat >Makefile <<'EOF'
include ${TOPDIR}/lbin/prereq.mk
HOSTCFLAGS+=    ${FLAG_TEST}
all: run-test

test: test.c
        ${HOSTCC} ${HOSTCFLAGS} -o $@ $^ ${LDADD}

run-test: test
        ./test
EOF
cat >test.c <<-'EOF'
        #include <stdio.h>
        int
        main()
        {
                printf("Yay! Native compiler works.\n");
                return (0);
        }
EOF
X=$(gmake TOPDIR=$topdir 2>&1)
if [[ $X != *@(Native compiler works)* ]]; then
        echo "$X" | sed 's/^/| /'
        echo Cannot compile a simple test programme.
        echo You must install a host make and C compiler,
        echo usually GCC, to proceed.
        echo
        out=1
fi
rm test

X=$(gmake FLAG_TEST=-fwrapv TOPDIR=$topdir 2>&1)
grep '^HOSTCFLAGS.*-fwrapv' ../prereq.mk >/dev/null 2>&1 || \
    if [[ $X = *@(Native compiler works)* ]]; then
        printf '/^HOSTCFLAGS/s/$/ -fwrapv/\nwq\n' | ed -s ../prereq.mk
else
        echo "$X" | sed 's/^/| /'
fi
rm test

need_fnotreevrp=0
X=$(gmake FLAG_TEST=-fno-tree-vrp TOPDIR=$topdir 2>&1)
grep '^HOSTCFLAGS.*-fno-tree-vrp' ../prereq.mk >/dev/null 2>&1 || \
    if [[ $X = *@(Native compiler works)* ]]; then
        need_fnotreevrp=1
else
        #echo "$X" | sed 's/^/| /'
        :
fi
rm test*
if [[ $need_fnotreevrp = 1 ]]; then
        cat >test.c <<-'EOF'
                typedef unsigned size_t;
                char *strncpy(char *, const char *, size_t);
                char *
                strncpy(char *d, const char *s, size_t n)
                {
                        if (!d || !s) {
                                if (d)
                                        *d = n;
                                return (d);
                        }
                        return (*d = 1, d);
                }
                int
                main(void)
                {
                        char a[] = "t";
                        strncpy(a, (void *)0, 2);
                        return (*a);
                }
        EOF
        X=$(gmake test TOPDIR=$topdir 2>&1)
        if [[ -x test ]]; then
                ./test >/dev/null 2>&1
                [[ $? = 2 ]] && need_fnotreevrp=0
        fi
        rm test*
fi
[[ $need_fnotreevrp = 1 ]] && \
    printf '/^HOSTCFLAGS/s/$/ -fno-tree-vrp/\nwq\n' | ed -s ../prereq.mk

if ! which cpp >/dev/null 2>&1; then
        echo You must install a C præprocessor to continue.
        echo
        out=1
fi

if ! which flex >/dev/null 2>&1; then
        echo You must install flex to continue.
        echo
        out=1
else
        echo '%%' | flex -
        if fgrep _POSIX_SOURCE lex.yy.c; then
                echo Your lexer \(flex\) contains a broken skeleton.
                if [[ $NO_ERROR = 1 ]]; then
                        echo WARNING: continue at your own risk.
                        echo Some packages may be broken.
                else
                        echo You can continue the build by issuing \'make prereq-noerror\'
                        echo However, several packages may faild to build correctly.
                        out=1
                fi
                echo
        fi
fi

if ! which bison >/dev/null 2>&1; then
        echo You must install GNU Bison to continue.
        echo While you can install any version, it is '*STRONGLY*' suggested
        echo to install GNU Bison version 2.3 because of its bug fixes.
        echo
        out=1
fi
X=$(bison --version 2>&1 | fgrep 'GNU Bison' | sed 's/^[^0-9]*//')
V=old
if [[ $X = +([0-9]).+([0-9]) ]]; then
        let major=${X%.*}
        let minor=${X#*.}
        if (( (major > 2) || ((major == 2) && (minor >= 3)) )); then
                V=new
        fi
fi
if [[ $V = old ]]; then
        echo It is suggested to upgrade your copy of bison to
        echo GNU Bison 2.3 because of its bug fixes.
fi

if ! which gzip >/dev/null 2>&1; then
        echo You must install gzip to continue.
        echo
        out=1
fi

if ! which bzip2 >/dev/null 2>&1; then
        echo You must install bzip2 to continue.
        echo
        out=1
fi

if ! which unzip >/dev/null 2>&1; then
        echo You must install unzip to continue, sorry.
        echo
        out=1
fi

if ! which zip >/dev/null 2>&1; then
        echo You must install zip to continue, sorry.
        echo
        out=1
fi

if ! which patch >/dev/null 2>&1; then
        echo You must install patch \(from Larry Wall\) to continue.
        echo
        out=1
fi

cat >test.c <<-'EOF'
        #include <stdio.h>
        #include <zlib.h>

        #ifndef STDIN_FILENO
        #define STDIN_FILENO 0
        #endif

        int
        main()
        {
                gzFile zstdin;
                char buf[1024];
                int i;

                zstdin = gzdopen(STDIN_FILENO, "rb");
                i = gzread(zstdin, buf, sizeof (buf));
                if ((i > 0) && (i < sizeof (buf)))
                        buf[i] = '\0';
                buf[sizeof (buf) - 1] = '\0';
                printf("%s\n", buf);
                return (0);
        }
EOF
X=$(echo 'Yay! Native compiler works.' | gzip | \
    gmake TOPDIR=$topdir LDADD=-lz 2>&1)
if [[ $X != *@(Native compiler works)* ]]; then
        echo "$X" | sed 's/^/| /'
        echo Cannot compile a libz test programme.
        echo You must install the zlib development package,
        echo usually called libz-dev, and the run-time library.
        echo
        out=1
fi

[[ -s /usr/include/ncurses.h ]] || if [[ -s /usr/pkg/include/ncurses.h ]]; then
        echo 'HOSTCFLAGS+= -isystem /usr/pkg/include' >>$topdir/lbin/prereq.mk
        echo 'HOSTLDFLAGS+=-L/usr/pkg/lib -Wl,-rpath -Wl,/usr/pkg/lib' >>$topdir/lbin/prereq.mk
else
        echo Install ncurses header files, please.
        echo
        out=1
fi

if ! which g++ >/dev/null 2>&1; then
        echo You must install the host GNU C++ compiler to continue.
        echo The compiler must be available as both c++ and g++.
        echo
        out=1
fi

if ! which c++ >/dev/null 2>&1; then
        echo You must install the host GNU C++ compiler to continue.
        echo The compiler must be available as both c++ and g++.
        echo
        out=1
fi

if ! which perl >/dev/null 2>&1; then
#if [[ "$(which perl 2>/dev/null)" != /usr/bin/perl ]]; then
        echo You must install Perl in /usr/bin to continue.
        echo
        out=1
fi

if ! which wget >/dev/null 2>&1; then
        echo You must install GNU wget to continue.
        echo
        out=1
fi

if ! which makeinfo >/dev/null 2>&1; then
        echo You must install GNU texinfo to continue.
        echo
        out=1
fi

if ! which ed >/dev/null 2>&1; then
        echo Why does your distribution not package the standard
        echo text editor, ed? Please install it to continue.
        echo
        out=1
elif [[ "$(PATH=/bin:$PATH which ed 2>/dev/null)" != /bin/ed ]]; then
        echo Your operating system installs ed, the standard text
        echo editor, not as /bin/ed. While you can build FreeWRT
        echo with this, ask your vendor to fix it, point to the
        echo FHS if needed.
        echo
fi

if ! which file >/dev/null 2>&1; then
        echo You must install \"file\" to continue.
        echo
        out=1
fi

if ! which mksh >/dev/null 2>&1; then
        echo USE_TOOLS_MKSH=1 >>$topdir/lbin/prereq.mk
        echo "MBSH:=$topdir/lbin/mkshw" >>$topdir/lbin/prereq.mk
        rm -f $topdir/lbin/mkshw
        cat >$topdir/lbin/mkshw <<-EOF
                #!/bin/sh
                if test -e '$topdir/lbin/mksh'; then
                        exec '$topdir/lbin/mksh' "\$@"
                else
                        exec '$BASH' "\$@"
                fi
        EOF
        chmod +x $topdir/lbin/mkshw
        BSH=$BASH
else
        BSH=$(which mksh)
        echo "MBSH:=$BSH" >>$topdir/lbin/prereq.mk
fi

if which nroff >/dev/null 2>&1; then
        if which nrcon >/dev/null 2>&1; then
                NROFF="nroff -Tcol \$\${MACROS} \$\${PAGES}"
        elif [[ "$(echo | nroff -v 2>&1)" = *GNU* ]]; then
                NROFF="nroff -c -Tascii \$\${MACROS} \$\${PAGES}"
        else
                NROFF="nroff \$\${MACROS} \$\${PAGES}"
        fi
elif which gnroff >/dev/null 2>&1; then
        NROFF="gnroff -c -Tascii \$\${MACROS} \$\${PAGES}"
elif which groff >/dev/null 2>&1; then
        NROFF="groff -c -Tascii \$\${MACROS} \$\${PAGES}"
else
        NROFF="cat -- \$\${PAGES}"
        echo warning: no nroff found, install GNU groff please
fi
echo "NROFF:=$NROFF" >>$topdir/lbin/prereq.mk


cd $topdir
rm -rf lbin/tmp

# populate some more tools
cat >lbin/autoconf <<-EOF
        #!$BSH
        echo '===> Warning: this package calls autoconf!'
        exit 0
EOF
cp lbin/autoconf lbin/autoheader
for v in 2.13 2.52 2.53 2.54 2.55 2.56 2.57 2.58 2.59 2.60 2.61; do
        cp lbin/autoconf lbin/autoconf-$v
        cp lbin/autoconf lbin/autoheader-$v
done
cat >lbin/automake <<-EOF
        #!$BSH
        echo '===> Warning: this package calls automake!'
        exit 0
EOF
cp lbin/automake lbin/aclocal
for v in 1.4 1.5 1.6 1.7 1.8 1.9 1.10; do
        cp lbin/automake lbin/automake-$v
        cp lbin/automake lbin/aclocal-$v
done
cat >lbin/help2man <<-EOF
        #!$BSH
        echo '===> Warning: this package calls help2man!'
        exit 0
EOF
chmod a+x lbin/{autoconf,autoheader,automake,aclocal,help2man}*

exit $out