#!/bin/bash

#
# Auto-generate requirements for ELF executables and library
# sonames, script interpreters, and perl modules.
#

ulimit -c 0

#
# --- Set needed to 0 for traditional find-requires behavior.
needed=1
if [ X"$3" = Xldd ]; then
    needed=0
elif [ X"$3" = Xobjdump ]; then
    needed=1
fi

# --- Mageia specific part
case "$LD_PRELOAD" in
    *libfakeroot*)
	unset LD_PRELOAD
	;;
esac

RPM_BUILD_ROOT=$1
RPM_ARCH=$2

if [ -n "$RPM_BUILD_ROOT" ]; then
    lib_path_64=$RPM_BUILD_ROOT/usr/X11R6/lib64:$RPM_BUILD_ROOT/usr/lib64:$RPM_BUILD_ROOT/lib64
    lib_path_32=$RPM_BUILD_ROOT/usr/X11R6/lib:$RPM_BUILD_ROOT/usr/lib:$RPM_BUILD_ROOT/lib
    LD_LIBRARY_PATH=$lib_path_64:$lib_path_32
    export LD_LIBRARY_PATH
fi


#
# --- Grab the file manifest and classify files.
#filelist=`sed "s/['\"]/\\\&/g"`
filelist=`sed "s/[]['\"*?{}]/\\\\\&/g"`
exelist=`echo "$filelist" | xargs -r file | egrep -v ":.* (commands|script) " | \
	grep ":.*ELF.*executable" | cut -d: -f1`
scriptlist=`echo "$filelist" | grep -v /usr/doc | grep -v /usr/share/doc | xargs -r file | \
	egrep ":.* (commands|script)" | cut -d: -f1`
liblist=`echo "$filelist" | egrep -v "/usr/lib(64)?/gcj/" | xargs -r file | \
	grep ":.*shared object" | cut -d : -f1`
ocamllist=`echo "$filelist" | xargs -r file | \
    grep ":.*Objective caml interface file" | cut -d : -f1`
phplist=`echo "$filelist" | grep -v /usr/doc | grep -v /usr/share/doc | egrep "\.php$"`

interplist=
perllist=
pythonlist=
tcllist=
rubygemlist=`echo "$filelist"| egrep "\.gemspec$"`

uniqdeplist=

#
# --- Alpha does not mark 64bit dependencies
case `uname -m` in
  alpha*)	mark64="" ;;
  *)		mark64="()(64bit)" ;;
esac

if [ "$needed" -eq 0 ]; then
#
# --- Executable dependency sonames.
  for f in $exelist; do
    [ -r $f -a -x $f ] || continue
    lib64=`if file -L $f 2>/dev/null | \
	grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
    ldd $f | awk '/=>/ {
	if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/) {
	    gsub(/'\''"/,"\\&",$1);
	    printf "%s'$lib64'\n", $1
	}
    }'
  done | xargs -r -n 1 basename | sort -u | grep -v 'libsafe|libfakeroot'

#
# --- Library dependency sonames.
  for f in $liblist; do
    [ -r $f ] || continue
    lib64=`if file -L $f 2>/dev/null | \
	grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
    ldd $f | awk '/=>/ {
	if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/) {
	    gsub(/'\''"/,"\\&",$1);
	    printf "%s'$lib64'\n", $1
	}
    }'
  done | xargs -r -n 1 basename | sort -u | grep -v 'libsafe|libfakeroot'
fi

#
# --- Perl or python deps
perlepoch=`rpm -q --qf '%|EPOCH?{[%{EPOCH}]:}|' perl-base`
if [ $? != 0 ]; then
	unset perlepoch
fi

tmpdeplist=
for f in $filelist; do
    dep="`echo $f | sed -n -e "s@.*/usr/lib/perl5/\(vendor_perl/\|site_perl/\|\)\([.0-9]\{1,\}\).*\\$@perl-base >= $perlepoch\2@p"`"
    if [[ -n $dep && -z `echo $uniqdeplist $tmpdeplist|grep "$dep"` ]]; then
	tmpdeplist+="$dep\n"
    fi
done
echo -n -e $tmpdeplist | sort -u
uniqdeplist+="$tmpdeplist"


#
# --- Script interpreters.
for f in $scriptlist; do
    [ -r $f -a -x $f ] || continue
    interp=`head -n 1 $f | grep '^#!' | sed -e 's/^\#\![ 	]*//' | cut -d" " -f1`
    if [[ "$interp" == *bin/env ]]; then
	    arg=`head -n 1 $f | grep '^#!' | sed -e 's/^\#\![ 	]*//' | cut -d" " -f2`
	    interp="`which $arg`"
    fi
    case $interp in
	    # we really don't need to add these dependencies as they're required by
	    # glibc and therefore guaranteed to be satisfied
	    */sh|*/bash)
		    continue
		    ;;
	    # we already have dedicated dependency generators for these
	    */python)
		    pythonlist="$pythonlist $f"
		    ;;
	    */perl)
		    perllist="$perllist $f"
		    ;;
	    */ruby)
		    rubylist="$rubylist $f"
		    ;;
	    *)
		    interplist="$interplist $interp"
		    ;;
    esac
done
if [ -n "$interplist" ]; then
    tmpdeplist=
    for i in `echo "$interplist" | tr '[:blank:]' \\\n `; do
        dep=`rpm -qf $i --qf '%{name}\n'` && i=$dep
	if [[ -z `echo $uniqdeplist $tmpdeplist|grep "$i"` ]]; then
	    tmpdeplist+="$i\n"
	fi
    done
    echo -n -e $tmpdeplist | sort -u | grep -v 'libsafe|libfakeroot'
    uniqdeplist="$tmpdeplist"
fi

#
# --- Add perl module files to perllist.
for f in $filelist; do
    [ -r $f -a "${f%.pm}" != "${f}" ] && perllist="$perllist $f"
done

#
# --- Weak symbol versions (from glibc).
[ -n "$mark64" ] && mark64="(64bit)"
for f in $liblist $exelist ; do
    [ -r $f ] || continue
    lib64=`if file -L $f 2>/dev/null | \
	grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
    objdump -p $f | awk 'BEGIN { START=0; LIBNAME=""; needed='$needed'; }
	/^$/ { START=0; }
	/^Dynamic Section:$/ { START=1; }
	(START==1) && /NEEDED/ {
	    if (needed) {
		if ("'$lib64'" != "") {
		    sub(/$/, "()'$lib64'", $2) ;
		}
		print $2 ;
	    }
	}
	/^Version References:$/ { START=2; }
	(START==2) && /required from/ {
	    sub(/:/, "", $3);
	    LIBNAME=$3;
	}
	(START==2) && (LIBNAME!="") && ($4!="") && (($4~/^GLIBC_*/) || ($4~/^GCC_*/)) {
	    print LIBNAME "(" $4 ")'$lib64'";
	}
    '
done | sort -u | grep -v 'libsafe|libfakeroot'

# --- OCaml dependency
if [ -x /usr/bin/ocamlc -a -n "$ocamllist" ]; then
   version=`ocamlc -v | grep version | awk '{print $6}' | sed -e 's/+/./'`
   echo "ocaml = $version"
fi

#
# --- Perl modules.
perlmymeta=$( echo $filelist | tr '[:blank:]' \\n | egrep 'doc/[^/]+/MYMETA.(yml|json)$' | head -1 )
perlmeta=$( echo $filelist | tr '[:blank:]' \\n | egrep 'doc/[^/]+/META.(yml|json)$' | head -1 )
if [ -n "$perlmymeta" ]
then
    [ -x @RPMVENDORDIR@/perl.req-from-meta ] && \
	@RPMVENDORDIR@/perl.req-from-meta $perlmymeta \
    	&& test ${PIPESTATUS[0]} -ne 0 && echo 'error: @RPMVENDORDIR@/perl.req-from-meta failed' >&2 && exit 1
elif [ -n "$perlmeta" ]
then
    [ -x @RPMVENDORDIR@/perl.req-from-meta ] && \
	@RPMVENDORDIR@/perl.req-from-meta $perlmeta \
    	&& test ${PIPESTATUS[0]} -ne 0 && echo 'error: @RPMVENDORDIR@/perl.req-from-meta failed' >&2 && exit 1
else
    [ -x @RPMVENDORDIR@/perl.req -a -n "$perllist" ] && \
	echo $perllist | tr '[:blank:]' \\n | @RPMVENDORDIR@/perl.req | grep 'perl([[:upper:]]' | egrep -v '^perl\((Be|FreeBSD|HPUX|Mac|MSDOS|MVS|OS2|Riscos|SGI|Solaris|VMS|Win32|WinNT)::' | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/perl.req failed' >&2 && exit 1
fi

#
# --- If libperl.so exists and if XS modules are found, depend on perlapi-<version> and libperl.so
if [ -n "$perllist" ]; then
    if perl -V:useshrplib | grep -q true ; then
	if echo $perllist | grep -q `perl -MConfig -e 'print $Config{archname}'` ; then
            version=`perl -MConfig -e 'print $Config{version}'`
            echo perlapi-$version

	    f=`perl -MConfig -e 'print $Config{archlib}'`/CORE/libperl.so
	    lib64=`if file -L $f 2>/dev/null | \
		grep "ELF 64-bit" >/dev/null; then echo "()$mark64"; fi`
	    echo libperl.so$lib64
	fi
    fi
fi

#
# --- Python modules.
[ -x @RPMVENDORDIR@/pythoneggs.py -a -n "$filelist" ] && \
    echo $filelist | tr '[:blank:]' \\n | @RPMVENDORDIR@/pythoneggs.py --requires | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/pythoneggs.py failed' >&2 && exit 1

#
# --- Tcl modules.
[ -x @RPMVENDORDIR@/tcl.req -a -n "$tcllist" ] && \
    echo $tcllist | tr '[:blank:]' \\n | @RPMVENDORDIR@/tcl.req | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/tcl.req failed' >&2 && exit 1

#
# --- Php modules.
[ -x @RPMVENDORDIR@/php.req -a -n "$phplist" ] && \
    echo $phplist | tr '[:blank:]' \\n | @RPMVENDORDIR@/php.req | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/php.req failed' >&2 && exit 1

#
# --- Pkgconfig deps
[ -x @RPMVENDORDIR@/pkgconfigdeps.sh ] &&
    echo "$filelist" | tr '[:blank:]' \\n | @RPMVENDORDIR@/pkgconfigdeps.sh -R | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/pkgconfigdeps.sh failed' >&2 && exit 1

#
# --- typelib() gobject-introspection bindings
[ -x @RPMVENDORDIR@/gi-find-deps.sh ] &&
    echo "$filelist" | tr '[:blank:]' \\n | @RPMVENDORDIR@/gi-find-deps.sh -R | sort -u \
        && test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/gi-find-deps.sh failed' >&2 && exit 1

if [ -n "$LIBTOOLDEP" ]; then
#
# --- libtooldep deps
[ -x @RPMLIBDIR@/libtooldeps.sh ] &&
    echo "$filelist" | tr '[:blank:]' \\n | @RPMLIBDIR@/libtooldeps.sh -R | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/libtooldeps.sh failed' >&2 && exit 1

fi

#
# --- Ruby gems
[ -x @RPMVENDORDIR@/rubygems.rb -a -n "$rubygemlist" ] &&
    echo $rubygemlist | tr '[:blank:]' \\n | @RPMVENDORDIR@/rubygems.rb --requires | sort -u \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: @RPMVENDORDIR@/rubygems.rb failed' >&2 && exit 1

#
# --- .so files.
for i in `echo $filelist | tr '[:blank:]' "\n" | egrep "(/usr(/X11R6)?)?/lib(|64)/[^/]+\.so$"`; do
    objd=`objdump -p ${i} | grep SONAME`
    lib64=`if file -L $i 2>/dev/null | grep "ELF 64-bit" >/dev/null; then echo "(64bit)"; fi` && \
    if [ -h ${i} -a -n "${objd}" ]; then
      if [ "$needed" -eq 0 ]; then
       ldd ${i} \
       | grep -v "statically linked" \
       | grep -v "/\(lib\|lib64\)/\(ld\|ld64\|ld-linux.*\)\.so" \
       | perl -p -e "s/\s+(\S+)\.so.*/devel(\1$lib64)/g"
      else
       objdump -p $i | grep -v "\(ld\|ld64\|ld-linux.*\)\.so" \
                     | awk 'BEGIN { START=0; }
       /^$/ { START=0; }
       /^Dynamic Section:$/ { START=1; }
       (START==1) && /NEEDED/ {
           sub(/^/, "devel(", $2) ;
           sub(/\.so.*$/, "'$lib64')", $2) ;
           print $2 ;
       }
       '
      fi
    fi
done | egrep -v 'devel\(linux-gate|linux-vdso32|linux-vdso64|lib(c|pthread|rt)(\(64bit\))?\)' | sort -u

#
# --- pkgconfig
echo $filelist |  tr '[:blank:]' '\n' | egrep -q '/usr/(share|lib(64)?)/pkgconfig/.*\.pc' && echo pkgconfig

#
# --- multiarch-utils
echo $filelist |  tr '[:blank:]' '\n' | grep -q '/multiarch-.*-linux/' && echo multiarch-utils

#
# --- mono requires
if [ -x /usr/bin/mono-find-requires ]; then
echo $filelist | tr '[:blank:]' '\n' | /usr/bin/mono-find-requires \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: /usr/bin/mono-find-requires failed' >&2 && exit 1
fi

#
# haskell requires
if [ -x /usr/bin/haskell-find-requires ]; then
echo $filelist | tr '[:blank:]' '\n' | /usr/bin/haskell-find-requires \
    	&& test ${PIPESTATUS[2]} -ne 0 && echo 'error: /usr/bin/haskell-find-requires failed' >&2 && exit 1
fi


exit 0