#!/bin/sh # # %CopyrightBegin% # # Copyright Ericsson AB 2010. All Rights Reserved. # # The contents of this file are subject to the Erlang Public License, # Version 1.1, (the "License"); you may not use this file except in # compliance with the License. You should have received a copy of the # Erlang Public License along with this software. If not, it can be # retrieved online at http://www.erlang.org/. # # Software distributed under the License is distributed on an "AS IS" # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See # the License for the specific language governing rights and limitations # under the License. # # %CopyrightEnd% # # Author: Rickard Green # # # NOTE! This script needs to be portable since it is run on all platforms # (besides win32). Keep this in mind when updating it. # ## set `INST_BIN_DEBUG=true' in environment when debugging the script to ## avoid removing, and creating stuff etc... ## ## We do not reset these variables, since values may be passed either via ## environment, or command line arguments. ## #bindir= #exec_prefix= #erlang_bindir= #DESTDIR= #EXTRA_PREFIX= #BINDIR_SYMLINKS= #LN_S= tst= # # When this script communicates with the user it talks of the parameters # as they are given to configure if such exist (currently --bindir, and # --exec-prefix); otherwise, as the variable names used in the top # Makefile (which calls this script). # path_variables="DESTDIR EXTRA_PREFIX exec_prefix bindir erlang_bindir" DQ= dbg= test "$INST_BIN_DEBUG" != "true" || dbg=true while [ $# -gt 1 ]; do case "$1" in --bindir) bindir="$2";; --exec-prefix) exec_prefix="$2";; --erlang-bindir) erlang_bindir="$2";; --destdir) DESTDIR="$2";; --extra-prefix) EXTRA_PREFIX="$2";; --bindir-symlinks) BINDIR_SYMLINKS="$2";; --ln_s) LN_S="$2";; --test-file) tst="$2";; *) break;; esac shift shift done test $# -gt 0 || { echo " ERROR: Missing files to install" 1>&2 test "$tst" = "" || echo "{error,{arg,missing_files}}." > $tst exit 1; } test "$bindir" != "" || { echo " ERROR: Missing --bindir" 1>&2 test "$tst" = "" || echo "{error,{arg,missing_bindir}}." > $tst exit 1 } test "$exec_prefix" != "" || { echo " ERROR: Missing --exec-prefix" 1>&2 test "$tst" = "" || echo "{error,{arg,missing_exec_prefix}}." > $tst exit 1 } test "$erlang_bindir" != "" || { echo " ERROR: Missing erlang_bindir" 1>&2 test "$tst" = "" || echo "{error,{arg,missing_erlang_bindir}}." > $tst exit 1 } # Make sure all paths are absolute for dir_var in $path_variables; do eval "dir_path=\"\$$dir_var\"" case "$dir_path" in /*) ;; "") # Empty DESTDIR or EXTRA_PREFIX which is ok case $dir_var in DESTDIR|EXTRA_PREFIX) ;; *) echo " ERROR: Internal error: \$$dir_var is empty" 1>&2 test "$tst" = "" || echo "{error,{empty,$dir_var}}." > $tst exit 1;; esac continue;; *) case $dir_var in bindir) flag="--bindir=";; exec_prefix) flag="--exec-prefix=";; erlang_bindir) flag="erlang_bindir=";; DESTDIR) flag="DESTDIR=";; EXTRA_PREFIX) flag="EXTRA_PREFIX=";; *) flag="";; # Need to update the script... esac cat 1>&2 <<EOF ERROR: Found path to a directory which was not absolute. All paths needs to be absolute. $flag"$dir_path" EOF test "$tst" = "" || echo "{error,{not_abs,'$dir_var'}}." > $tst exit 1;; esac case "$dir_path" in *[!A-Za-z0-9/=_.-]*) DQ="\"";; *) ;; esac done # We place temporary check files in the source dir and the target dir. These # can later be used to verify that our modifications of the paths are # successful. test "$dbg" = "true" || { bchk_file="tmp-erlang-install-bin.$$" ebchk_file="tmp-erlang-install-erl-bin.$$" bchk="$DESTDIR$EXTRA_PREFIX$bindir/$bchk_file" ebchk="$DESTDIR$EXTRA_PREFIX$erlang_bindir/$ebchk_file" chk_txt="Temporary Erlang/OTP install file." chk_err=no # Make sure we haven't got any old ones... rm -f "$bchk" "$ebchk" { { echo "$chk_txt" > "$ebchk"; } 2>/dev/null && test -r "$ebchk"; } || { cat 1>&2 <<EOF ERROR: Cannot create files in 'erlang_bindir'. EOF chk_err=no_create_erlang_bindir } { { echo "$chk_txt" > "$bchk"; } 2>/dev/null && test -r "$bchk"; } || { cat 1>&2 <<EOF ERROR: Cannot create files in '--bindir'. EOF chk_err=no_create_bindir } { test $chk_err != no || test ! -f "$DESTDIR$EXTRA_PREFIX$bindir/$ebchk_file"; } || { # Refuse to install in the same directory as the source... cat 1>&2 <<EOF ERROR: '--bindir' and 'erlang_bindir' both points to the same directory. This can be due to symbolic directory links. EOF chk_err=target_and_source_same_dir } test $chk_err = no || { cat 1>&2 <<EOF --bindir="$bindir" erlang_bindir="$erlang_bindir" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" Note that all absolute directory paths are prefixed by \$DESTDIR\$EXTRA_PREFIX when accessed. EOF rm -f "$bchk" "$ebchk" test "$tst" = "" || echo "{error,$chk_err}." > $tst exit 1 } } dirty=no # Make all paths look good (remove all `.' dirs, `//', and trailing `/'). for dir_var in $path_variables; do eval "dir_path=\"\$$dir_var\"" test "$dir_path" != "" || continue ndp= save_IFS=$IFS IFS=/ for dir in $dir_path; do case "$dir" in "" | ".") continue;; "..") case $dir_var in bindir|erlang_bindir|exec_prefix) dirty=yes;; *) ;; esac;; *) ;; esac ndp="$ndp/$dir" done IFS=$save_IFS test "$ndp" != "" || ndp="/" eval "$dir_var=\"$ndp\"" done iprfx="$DESTDIR$EXTRA_PREFIX" # Make sure we didn't mess up { $dbg test -f "$iprfx$bindir/$bchk_file" && $dbg test -f "$iprfx$erlang_bindir/$ebchk_file"; } || { cat 1>&2 <<EOF ERROR: Internal error: Unsuccessfully trimmed the paths --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" EOF $dbg rm -f "$bchk" "$ebchk" test "$tst" = "" || echo "{error,bad_trim}." > $tst exit 1 } # Now all paths look good... # $ln_s should be either 'ln -s', 'ln', or 'cp -p'. We don't want to # maks hard links, so make sure we got 'ln -s'; otherwise, use 'cp -p' # This is the fallback if we haven't got 'ln -s' ln_s="cp -p" type=copy paths=absolute abspath_reason=no_ln_s src_dir="$iprfx$erlang_bindir" case "X${LN_S}X" in Xln[\ \ ]*X|X*[\ \ ]ln[\ \ ]*X) # Got `ln'; check that we also got `-s' flag case "X${LN_S}X" in X*[\ \ ]-sX|X*[\ \ ]-s[\ \ ]*X) # Ok; seems like we got `ln -s' ln_s="ln -s" type=link paths="$BINDIR_SYMLINKS" test "$BINDIR_SYMLINKS" = "absolute" && abspath_reason=request # $DESTDIR should *not* be part of src_dir when linking src_dir="$EXTRA_PREFIX$erlang_bindir" ;; *) ;; esac;; *) ;; esac case "$paths" in absolute|relative) ;; *) paths=undetermined;; esac # Determine if we should use absolute or relative paths for links test $paths != absolute && { # If $paths is undetermined, use absolute paths unless both $bindir # and $erlang_bindir are prefixed by $exec_prefix (which is the normal # case) test $paths = relative || paths=absolute abspath_reason=not_prefix resolved_bindir="$bindir" resolved_erlang_bindir="$erlang_bindir" resolved_exec_prefix="$exec_prefix" case "$bindir" in "$exec_prefix"*) case "$erlang_bindir" in "$exec_prefix"*) paths=relative;; *) ;; esac;; *);; esac # Now paths=absolute|relative # If we got dirty paths (contains ..) and are going for relative links, # we need to resolve the paths test $dirty-$paths = yes-relative && { # Need to resolve $bindir and $erlang_bindir paths for dir_var in bindir erlang_bindir exec_prefix; do eval "dir_path=\"\$$dir_var\"" ndp="/" save_IFS=$IFS IFS=/ for dir in $dir_path; do case "$dir" in "") ;; "..") test "$ndp" != "/" || { IFS=$save_IFS paths=absolute abspath_reason=unreasonable_path break 2 } ndp=`dirname "$ndp" 2>/dev/null` || { IFS=$save_IFS paths=absolute abspath_reason=dirname_failed break 2 };; *) if test "$ndp" = "/"; then ndp="/$dir" else ndp="$ndp/$dir" fi;; esac done IFS=$save_IFS test "$ndp" != "" || ndp="/" eval "resolved_$dir_var=\"$ndp\"" done } # If we still are going for relative and relative symbolic links have # not been explicitly requested check that the resolved paths still # are prefixed by exec_prefix test $paths = relative && test "$BINDIR_SYMLINKS" != "relative" && { paths=absolute abspath_reason=not_prefix case "$resolved_bindir" in "$resolved_exec_prefix"*) case "$resolved_erlang_bindir" in "$resolved_exec_prefix"*) paths=relative;; *) ;; esac;; *) ;; esac } # If we still are going for relative check that resolved paths are # reachable (might not be if the directory structure contains symbolic # directory links). test $paths = relative && { ($dbg test -r "$iprfx$resolved_bindir/$bchk_file" && $dbg test -r "$iprfx$resolved_erlang_bindir/$ebchk_file" && $dbg cd "$iprfx$resolved_bindir" && $dbg test -r "./$bchk_file" && $dbg cd "$iprfx$resolved_erlang_bindir" && $dbg test -r "./$ebchk_file") || { paths=absolute abspath_reason=unreachable_absolute } } # If we still are going for relative, calculate the relative path from # $resolved_bindir to $resolved_erlang_bindir and verify that we # can reach $erlang_bindir from $bindir via calculated relative path test $paths = relative && { relpath= common= save_IFS=$IFS IFS=/ build=false for dir in $resolved_erlang_bindir; do test "$dir" != "" || continue test $build = false || { relpath="$relpath/$dir"; continue; } cand="${common}/$dir" case "$resolved_bindir" in "$cand"*) common="$cand";; *) relpath="$dir"; build=true;; esac done check= build=false test "$common" != "" || build=true for dir in $resolved_bindir; do test "$dir" != "" || continue test $build = true || { check="${check}/$dir" test "$check" != "$common" || build=true continue } if test "$relpath" = ""; then relpath=".." else relpath="../$relpath" fi done IFS=$save_IFS test "$relpath" != "" || { cat 1>&2 <<EOF ERROR: Internal error: Computed relative path: . --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" BINDIR_SYMLINKS="$BINDIR_SYMLINKS" EOF $dbg rm -f "$bchk" "$ebchk" test "$tst" = "" || echo "{error,empty_relpath}." > $tst exit 1 } # Verify that it works otherwise go for absolute links if ($dbg cd "$iprfx$bindir" 2>/dev/null && \ $dbg test -r "$relpath/$ebchk_file"); then src_dir="$relpath" else abspath_reason=unreachable_relative paths=absolute fi } } # Don't need the temporary check files anymore $dbg rm -f "$bchk" "$ebchk" # If we reverted to absolute paths we may have to abort or notify the user # about this... case "$paths-$BINDIR_SYMLINKS" in absolute-absolute) # User requested absolute and got it case "$abspath_reason" in no_ln_s) cat <<EOF ERROR: Cannot install absolute symbolic links in the '--bindir' directory, since 'ln -s' does not work. If you want to install using 'cp -p' invoke 'make install' without setting BINDIR_SYMLINKS. --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" BINDIR_SYMLINKS="$BINDIR_SYMLINKS" Note that all absolute directory paths are prefixed by \$DESTDIR\$EXTRA_PREFIX when accessed. EOF test "$tst" = "" || echo "{error,$abspath_reason}." > $tst exit 1;; # Abort... *) ;; esac;; absolute-relative) # User forced relative symbolic links, but we need # to revert to absolute symbolic links. Print error # message and abort. case "$abspath_reason" in no_ln_s) cat 1>&2 <<EOF ERROR: Cannot install relative symbolic links in the '--bindir' directory, since 'ln -s' does not work. If you want to install using 'cp -p' do not set BINDIR_SYMLINKS, and invoke 'make install' again. EOF ;; not_prefix) cat 1>&2 <<EOF ERROR: Internal error: Should not have reverted to absolute paths just because '--exec-prefix' was not a prefix of '--bindir' and/or 'erlang_bindir' since relative symbolic links were forced. EOF ;; unreasonable_path) cat 1>&2 <<EOF ERROR: Refusing to install relative symbolic links, since the relative path potentially could go via \$DESTDIR\$EXTRA_PREFIX/. Make your install paths a bit more reasonable (preferably) or, do not invoke 'make install' with 'BINDIR_SYMLINKS=relative'. EOF ;; unreachable_absolute) cat 1>&2 <<EOF ERROR: Could not find '--bindir' and/or 'erlang_bindir' after resolving paths. The directory structure probably consists of symbolic directory links. Refusing to install obviously incorrect relative symbolic links. In order to install absolute symbolic links, invoke 'make install' without 'BINDIR_SYMLINKS=relative'. EOF ;; unreachable_relative) cat 1>&2 <<EOF ERROR: Could not find 'erlang_bindir' from '--bindir' via computed relative path. This probably due to symbolic directory links. Refusing to install obviously incorrect relative symbolic links. In order to install absolute symbolic links, invoke 'make install' without 'BINDIR_SYMLINKS=relative'. Computed relative path="$relpath" EOF ;; dirname_failed) cat 1>&2 <<EOF ERROR: Cannot install relative symbolic links since the 'dirname' command failed while computing the relative path. The 'dirname' command is only needed when '--bindir', 'erlang_bindir', and/or '--exec-prefix' contain relative parts, i.e., '..' parts. If you modify your install paths, it may be possible to install relative symbolic links. In order to install absolute symbolic links, invoke 'make install' without 'BINDIR_SYMLINKS=relative'. EOF ;; *) cat 1>&2 <<EOF ERROR: Refusing to install relative symbolic links. The error description for \"$abspath_reason\" is however missing. EOF ;; esac cat 1>&2 <<EOF --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" BINDIR_SYMLINKS="$BINDIR_SYMLINKS" Note that all absolute directory paths are prefixed by \$DESTDIR\$EXTRA_PREFIX when accessed. EOF test "$tst" = "" || echo "{error,$abspath_reason}." > $tst exit 1;; # Abort... absolute-*) # Notify the user that we reverted to absolute symbolic links cat <<EOF * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * EOF case "$abspath_reason" in no_ln_s) cat <<EOF NOTE: Cannot install symbolic links in the '--bindir' directory, since 'ln -s' does not work. Will create copies using 'cp -p' instead. EOF ;; not_prefix) cat <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' directory instead of relative ones. This since at least one of these directories is not prefixed by '--exec-prefix'. It is possible to force relative symbolic links if you want that by invoking the install as 'make BINDIR_SYMLINKS=relative install'. EOF ;; unreasonable_path) cat <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' directory instead of relative ones. This since it potentially would pass outside of '\$DESTDIR\$EXTRA_PREFIX/'. EOF ;; unreachable_absolute) cat <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' instead of relative ones. This since at least one of these directory could not be found after resolving paths. This is probably due to symbolic directory links. EOF ;; unreachable_relative) cat <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' directory instead of relative ones. This since the 'erlang_bindir' directory could not be found from the '--bindir' directory using the computed relative path. This is probably due to symbolic directory links. Computed relative path="$relpath" EOF ;; dirname_failed) cat 1>&2 <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' directory instead of relative ones. This since the 'dirname' command failed while computing the relative path. The 'dirname' command is only needed when '--bindir', 'erlang_bindir', and/or '--exec-prefix' contain relative parts, i.e., '..' parts. If you modify your install paths, it may be possible to install relative symbolic links. EOF ;; *) cat 1>&2 <<EOF NOTE: Installing absolute symbolic links in the '--bindir' directory to the 'erlang_bindir' instead of relative ones. The notification description for "$abspath_reason" is however missing. EOF ;; esac cat <<EOF --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" BINDIR_SYMLINKS="$BINDIR_SYMLINKS" Note that all absolute directory paths are prefixed by \$DESTDIR\$EXTRA_PREFIX when accessed. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * EOF ;; *) # relative links ;; esac # Now paths=absolute|relative and src_dir is correct (relative bindir) # cd into "$iprfx$bindir" and do it from there... echo cd "$DQ$iprfx$bindir$DQ" $dbg cd "$iprfx$bindir" || { test "$tst" = "" || echo "{error,cd_bin_failed}." > $tst exit 1 } # Verify that the source files actually exist (done in a separate pass # before we modify anything, so we leave it untouched if it should fail). # Note that we will not find them under $src_dir if we use absolute symbolic # links and $DESTDIR != "". In this case (actually all cases) they can then # be found under $iprfx$erlang_bindir test_src_dir="$src_dir" test "$paths-$type" != "absolute-link" || test_src_dir="$iprfx$erlang_bindir" for file in "$@"; do test "$file" != "" || continue src_file="$test_src_dir/$file" $dbg test -f "$src_file" || { cat 1>&2 <<EOF ERROR: Missing source file: $src_file --bindir="$bindir" erlang_bindir="$erlang_bindir" --exec-prefix="$exec_prefix" EXTRA_PREFIX="$EXTRA_PREFIX" DESTDIR="$DESTDIR" BINDIR_SYMLINKS="$BINDIR_SYMLINKS" Note that all absolute directory paths are prefixed by \$DESTDIR\$EXTRA_PREFIX when accessed. EOF test "$tst" = "" || echo "{error,{no_srcfile,\"$src_file\"}}." > $tst exit 1 } done # Remove after possible old install (done in a separate pass since I think # the output looks nicer than if mixed). Note that we cannot test for existance # in a portable way, so force remove. for file in "$@"; do test "$file" != "" || continue echo rm -f "$file" $dbg rm -f "$file" done # do it for file in "$@"; do echo $ln_s "$DQ$src_dir/$file$DQ" "$file" $dbg $ln_s "$src_dir/$file" "$file" || { test "$tst" = "" || echo "{error,{$type,\"$file\",failed}}." > $tst exit 1 } done test "$tst" = "" || echo "{ok,{$paths,\"$iprfx$bindir\",\"$src_dir\"}}." > $tst exit 0 # Done