diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b059d384214..128d1a87f38 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,15 @@ +2002-05-09 Jakub Jelinek + + PR target/6429 + * Makefile.in (libgcc.mk): Pass SHLIB_SLIBDIR_SUFFIXES to mklibgcc. + * mklibgcc.in: If SHLIB_SLIBDIR_SUFFIXES is defined, put libgcc_s + shared libraries into multilib dirs, with SONAME libgcc_s.so.1 for + base multilibs. + * config/t-slibgcc-elf-ver (SHLIB_LINK): Adjust for the above. + * config/t-slibgcc-sld (SHLIB_LINK): Likewise. + * config/sparc/t-linux64 (SHLIB_SLIBDIR_SUFFIXES): Define. + * config/sparc/t-sol2-64 (SHLIB_SLIBDIR_SUFFIXES): Define. + 2002-05-09 Richard Henderson * config/ia64/ia64.md: Use define_constants for unspec numbers. diff --git a/gcc/Makefile.in b/gcc/Makefile.in index 7affc56800a..b1605563d85 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -1004,6 +1004,7 @@ libgcc.mk: config.status Makefile mklibgcc $(LIB2ADD) $(LIB2ADD_ST) xgcc$(exeext SHLIB_MKMAP_OPTS='$(SHLIB_MKMAP_OPTS)' \ SHLIB_MAPFILES='$(SHLIB_MAPFILES)' \ SHLIB_NM_FLAGS='$(SHLIB_NM_FLAGS)' \ + SHLIB_SLIBDIR_SUFFIXES='$(SHLIB_SLIBDIR_SUFFIXES)' \ mkinstalldirs='$(SHELL) $(srcdir)/mkinstalldirs' \ $(SHELL) mklibgcc > tmp-libgcc.mk mv tmp-libgcc.mk libgcc.mk diff --git a/gcc/config/sparc/t-linux64 b/gcc/config/sparc/t-linux64 index 4f552e07d1e..d8dedc542bd 100644 --- a/gcc/config/sparc/t-linux64 +++ b/gcc/config/sparc/t-linux64 @@ -8,3 +8,5 @@ LIBGCC = stmp-multilib INSTALL_LIBGCC = install-multilib EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o + +SHLIB_SLIBDIR_SUFFIXES = 64:64 32: diff --git a/gcc/config/sparc/t-sol2-64 b/gcc/config/sparc/t-sol2-64 index 8d42c445354..ef7dee7ecab 100644 --- a/gcc/config/sparc/t-sol2-64 +++ b/gcc/config/sparc/t-sol2-64 @@ -6,3 +6,5 @@ LIBGCC = stmp-multilib INSTALL_LIBGCC = install-multilib EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o gmon.o crt1.o crti.o crtn.o gcrt1.o + +SHLIB_SLIBDIR_SUFFIXES = sparcv9:/sparcv9 sparcv7: diff --git a/gcc/config/t-slibgcc-elf-ver b/gcc/config/t-slibgcc-elf-ver index d6c89ff8acb..c02ff9d6b7c 100644 --- a/gcc/config/t-slibgcc-elf-ver +++ b/gcc/config/t-slibgcc-elf-ver @@ -2,22 +2,28 @@ # with the GNU linker. SHLIB_EXT = .so -SHLIB_NAME = @shlib_base_name@.so -SHLIB_SONAME = @shlib_base_name@.so.1 +SHLIB_SOLINK = @shlib_base_name@.so +SHLIB_SONAME = @shlib_so_name@.so.1 +SHLIB_NAME = @shlib_dir@@shlib_so_name@.so.1 SHLIB_MAP = @shlib_map_file@ SHLIB_OBJS = @shlib_objs@ +SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@ SHLIB_LC = -lc SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \ -Wl,--soname=$(SHLIB_SONAME) \ -Wl,--version-script=$(SHLIB_MAP) \ -o $(SHLIB_NAME) @multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC) && \ - rm -f $(SHLIB_SONAME) && \ - $(LN_S) $(SHLIB_NAME) $(SHLIB_SONAME) + rm -f $(SHLIB_SOLINK) && \ + $(LN_S) $(SHLIB_NAME) $(SHLIB_SOLINK) # $(slibdir) double quoted to protect it from expansion while building # libgcc.mk. We want this delayed until actual install time. -SHLIB_INSTALL = $(INSTALL_DATA) $(SHLIB_NAME) $$(slibdir)/$(SHLIB_SONAME); \ - rm -f $$(slibdir)/$(SHLIB_NAME); \ - $(LN_S) $(SHLIB_SONAME) $$(slibdir)/$(SHLIB_NAME) +SHLIB_INSTALL = \ + $$(SHELL) $$(srcdir)/mkinstalldirs $$(slibdir)$(SHLIB_SLIBDIR_QUAL); \ + $(INSTALL_DATA) $(SHLIB_NAME) \ + $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \ + rm -f $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \ + $(LN_S) $(SHLIB_SONAME) \ + $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK) SHLIB_MKMAP = $(srcdir)/mkmap-symver.awk SHLIB_MAPFILES = $(srcdir)/libgcc-std.ver diff --git a/gcc/config/t-slibgcc-sld b/gcc/config/t-slibgcc-sld index 35f1bc15fd7..c11a5721966 100644 --- a/gcc/config/t-slibgcc-sld +++ b/gcc/config/t-slibgcc-sld @@ -1,21 +1,27 @@ # Build a shared libgcc library with the Solaris linker. SHLIB_EXT = .so -SHLIB_NAME = @shlib_base_name@.so -SHLIB_SONAME = @shlib_base_name@.so.1 +SHLIB_SOLINK = @shlib_base_name@.so +SHLIB_SONAME = @shlib_so_name@.so.1 +SHLIB_NAME = @shlib_dir@@shlib_so_name@.so.1 SHLIB_MAP = @shlib_map_file@ SHLIB_OBJS = @shlib_objs@ +SHLIB_SLIBDIR_QUAL = @shlib_slibdir_qual@ SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \ -Wl,-h,$(SHLIB_SONAME) -Wl,-z,text -Wl,-z,defs \ -Wl,-M,$(SHLIB_MAP) -o $(SHLIB_NAME) \ @multilib_flags@ $(SHLIB_OBJS) -lc && \ - rm -f $(SHLIB_SONAME) && \ - $(LN_S) $(SHLIB_NAME) $(SHLIB_SONAME) + rm -f $(SHLIB_SOLINK) && \ + $(LN_S) $(SHLIB_NAME) $(SHLIB_SOLINK) # $(slibdir) double quoted to protect it from expansion while building # libgcc.mk. We want this delayed until actual install time. -SHLIB_INSTALL = $(INSTALL_DATA) $(SHLIB_NAME) $$(slibdir)/$(SHLIB_SONAME); \ - rm -f $$(slibdir)/$(SHLIB_NAME); \ - $(LN_S) $(SHLIB_SONAME) $$(slibdir)/$(SHLIB_NAME) +SHLIB_INSTALL = \ + $$(SHELL) $$(srcdir)/mkinstalldirs $$(slibdir)$(SHLIB_SLIBDIR_QUAL); \ + $(INSTALL_DATA) $(SHLIB_NAME) \ + $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \ + rm -f $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \ + $(LN_S) $(SHLIB_SONAME) \ + $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK) SHLIB_MKMAP = $(srcdir)/mkmap-symver.awk SHLIB_MAPFILES = $(srcdir)/libgcc-std.ver diff --git a/gcc/mklibgcc.in b/gcc/mklibgcc.in index 8018eca2f64..06c2ec0134e 100644 --- a/gcc/mklibgcc.in +++ b/gcc/mklibgcc.in @@ -32,6 +32,7 @@ # SHLIB_MAPFILES # SHLIB_NM_FLAGS # SHLIB_INSTALL +# SHLIB_SLIBDIR_SUFFIXES # Make needs VPATH to be literal. echo 'srcdir = @srcdir@' @@ -306,11 +307,31 @@ for ml in $MULTILIBS; do echo ' else true; fi;' if [ -z "$SHLIB_MULTILIB" ]; then - if [ "$dir" = "." ]; then - shlib_base_name="libgcc_s"; + if [ "$dir" = . ]; then + shlib_base_name=libgcc_s else shlib_base_name=libgcc_s_`echo $dir | sed s,/,_,g` fi + shlib_so_name="$shlib_base_name" + shlib_dir= + if [ -n "$SHLIB_SLIBDIR_SUFFIXES" ]; then + if [ "$dir" != . ]; then + shlib_dir="$dir"/ + for suffix_pair in $SHLIB_SLIBDIR_SUFFIXES ; do + base_ml_dir=`echo ${suffix_pair} | sed -e 's/:.*$//' -e 's/=/$(EQ)/g'` + if [ "$dir" = "$base_ml_dir" ]; then + shlib_so_name=libgcc_s + break + else + canon_dir=`echo $dir | sed -n -e "s:$base_ml_dir/::p"` + if [ -n "$canon_dir" ]; then + shlib_so_name=libgcc_s_`echo $canon_dir | sed s,/,_,g` + break + fi + fi + done + fi + fi echo "" echo "${dir}/${shlib_base_name}${SHLIB_EXT}: $shlib_deps" echo " $SHLIB_LINK" \ @@ -318,7 +339,9 @@ for ml in $MULTILIBS; do -e "s%@multilib_dir@%$dir%g" \ -e "s%@shlib_objs@%$libgcc_sh_objs%g" \ -e "s%@shlib_base_name@%$shlib_base_name%g" \ - -e "s%@shlib_map_file@%$mapfile%g" + -e "s%@shlib_map_file@%$mapfile%g" \ + -e "s%@shlib_so_name@%$shlib_so_name%g" \ + -e "s%@shlib_dir@%$shlib_dir%g" elif [ "$SHLIB_MULTILIB" = "$dir" ]; then shlib_base_name="libgcc_s"; echo "" @@ -328,7 +351,9 @@ for ml in $MULTILIBS; do -e "s%@multilib_dir@%$dir%g" \ -e "s%@shlib_objs@%$libgcc_sh_objs%g" \ -e "s%@shlib_base_name@%$shlib_base_name%g" \ - -e "s%@shlib_map_file@%$mapfile%g" + -e "s%@shlib_map_file@%$mapfile%g" \ + -e "s%@shlib_so_name@%$shlib_base_name%g" \ + -e "s%@shlib_dir@%%g" fi fi done @@ -424,17 +449,61 @@ for ml in $MULTILIBS; do echo ' $(RANLIB_FOR_TARGET)' ${ldir}/libgcc_eh.a if [ -z "$SHLIB_MULTILIB" ]; then - if [ "$dir" = "." ]; then - shlib_base_name="libgcc_s"; + if [ "$dir" = . ]; then + shlib_base_name=libgcc_s else shlib_base_name=libgcc_s_`echo $dir | sed s,/,_,g` fi + shlib_so_name="$shlib_base_name" + shlib_dir= + shlib_slibdir_qual= + if [ -n "$SHLIB_SLIBDIR_SUFFIXES" ]; then + shlib_slibdir_qual=none + if [ "$dir" != . ]; then + shlib_dir="$dir"/ + for suffix_pair in $SHLIB_SLIBDIR_SUFFIXES ; do + base_ml_dir=`echo ${suffix_pair} | sed -e 's/:.*$//' -e 's/=/$(EQ)/g'` + if [ "$dir" = "$base_ml_dir" ]; then + shlib_so_name=libgcc_s + shlib_slibdir_qual=`echo ${suffix_pair} | sed -e 's/^[^:]*://'` + break + else + canon_dir=`echo $dir | sed -n -e "s:$base_ml_dir/::p"` + if [ -n "$canon_dir" ]; then + shlib_so_name=libgcc_s_`echo $canon_dir | sed s,/,_,g` + shlib_slibdir_qual=`echo ${suffix_pair} | sed -e 's/^[^:]*://'` + break + fi + fi + done + fi + if [ "$shlib_slibdir_qual" = none ]; then + for suffix_pair in $SHLIB_SLIBDIR_SUFFIXES ; do + base_ml_dir=`echo ${suffix_pair} | sed -e 's/:.*$//' -e 's/=/$(EQ)/g'` + shlib_slibdir_qual=`echo ${suffix_pair} | sed -e 's/^[^:]*://'` + for ml2 in $MULTILIBS; do + dir2=`echo ${ml2} | sed -e 's/;.*$//' -e 's/=/$(EQ)/g'` + if [ "$base_ml_dir" = "$dir2" ]; then + shlib_slibdir_qual= + break + fi + done + if [ -n "$shlib_slibdir_qual" ]; then break; fi + done + fi + fi echo " $SHLIB_INSTALL" \ - | sed -e "s%@shlib_base_name@%$shlib_base_name%g" + | sed -e "s%@shlib_base_name@%$shlib_base_name%g" \ + -e "s%@shlib_so_name@%$shlib_so_name%g" \ + -e "s%@shlib_dir@%$shlib_dir%g" \ + -e "s%@shlib_slibdir_qual@%$shlib_slibdir_qual%g" elif [ "$SHLIB_MULTILIB" = "$dir" ]; then shlib_base_name="libgcc_s"; echo " $SHLIB_INSTALL" \ - | sed -e "s%@shlib_base_name@%$shlib_base_name%g" + | sed -e "s%@shlib_base_name@%$shlib_base_name%g" \ + -e "s%@shlib_so_name@%$shlib_base_name%g" \ + -e "s%@shlib_dir@%%g" \ + -e "s%@shlib_slibdir_qual@%%g" fi fi done diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 363389a8a60..371e523957e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,10 @@ +2002-05-09 Jakub Jelinek + + * lib/g77.exp (g77_link_flags): Append all multilib dirs containing + libgcc_s*.so.1 below gcc object dir to LD_LIBRARY_PATH. + * lib/g++.exp (g++_link_flags): Likewise. + * lib/objc.exp (objc_target_compile): Likewise. + 2002-05-09 Neil Booth * gcc.dg/cpp/poison.c: Update. diff --git a/gcc/testsuite/lib/g++.exp b/gcc/testsuite/lib/g++.exp index a9a49e4e619..4fb903eed66 100644 --- a/gcc/testsuite/lib/g++.exp +++ b/gcc/testsuite/lib/g++.exp @@ -1,4 +1,5 @@ -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 2000, 2001 Free Software Foundation, Inc. +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002 +# Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -108,6 +109,7 @@ proc g++_link_flags { paths } { global rootme global srcdir global ld_library_path + global GXX_UNDER_TEST set gccpath ${paths} set libio_dir "" @@ -137,6 +139,20 @@ proc g++_link_flags { paths } { append flags "-L${gccpath}/librx " } append ld_library_path ":${rootme}" + set compiler [lindex $GXX_UNDER_TEST 0] + if { [is_remote host] == 0 && [which $compiler] != 0 } { + foreach i "[exec $compiler --print-multi-lib]" { + set mldir "" + regexp -- "\[a-z0-9=/\.-\]*;" $i mldir + set mldir [string trimright $mldir "\;@"] + if { "$mldir" == "." } { + continue + } + if { [llength [glob -nocomplain ${rootme}/${mldir}/libgcc_s*.so.*]] == 1 } { + append ld_library_path ":${rootme}/${mldir}" + } + } + } } else { global tool_root_dir; diff --git a/gcc/testsuite/lib/g77.exp b/gcc/testsuite/lib/g77.exp index 8ad51e9b56b..42780c227c9 100644 --- a/gcc/testsuite/lib/g77.exp +++ b/gcc/testsuite/lib/g77.exp @@ -75,6 +75,7 @@ proc g77_link_flags { paths } { global rootme global srcdir global ld_library_path + global G77_UNDER_TEST set gccpath ${paths} set libio_dir "" @@ -93,6 +94,20 @@ proc g77_link_flags { paths } { append flags "-L${gccpath}/libiberty " } append ld_library_path ":${rootme}" + set compiler [lindex $G77_UNDER_TEST 0] + if { [is_remote host] == 0 && [which $compiler] != 0 } { + foreach i "[exec $compiler --print-multi-lib]" { + set mldir "" + regexp -- "\[a-z0-9=/\.-\]*;" $i mldir + set mldir [string trimright $mldir "\;@"] + if { "$mldir" == "." } { + continue + } + if { [llength [glob -nocomplain ${rootme}/${mldir}/libgcc_s*.so.*]] == 1 } { + append ld_library_path ":${rootme}/${mldir}" + } + } + } } # On IRIX 6, we have to set variables akin to LD_LIBRARY_PATH, but diff --git a/gcc/testsuite/lib/objc.exp b/gcc/testsuite/lib/objc.exp index d82442c4382..a1431a116ec 100644 --- a/gcc/testsuite/lib/objc.exp +++ b/gcc/testsuite/lib/objc.exp @@ -1,4 +1,4 @@ -# Copyright (C) 1992, 1993, 1994, 1996, 1997, 2000, 2001 +# Copyright (C) 1992, 1993, 1994, 1996, 1997, 2000, 2001, 2002 # Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify @@ -85,12 +85,14 @@ proc objc_version { } { set objc_initialized 0 proc objc_init { args } { + global rootme global tmpdir global libdir global gluefile wrap_flags global objc_initialized global OBJC_UNDER_TEST global TOOL_EXECUTABLE + global objc_libgcc_s_path if { $objc_initialized == 1 } { return; } @@ -115,6 +117,22 @@ proc objc_init { args } { unset gluefile } } + + set objc_libgcc_s_path "${rootme}" + set compiler [lindex $OBJC_UNDER_TEST 0] + if { [is_remote host] == 0 && [which $compiler] != 0 } { + foreach i "[exec $compiler --print-multi-lib]" { + set mldir "" + regexp -- "\[a-z0-9=/\.-\]*;" $i mldir + set mldir [string trimright $mldir "\;@"] + if { "$mldir" == "." } { + continue + } + if { [llength [glob -nocomplain ${rootme}/${mldir}/libgcc_s*.so.*]] == 1 } { + append objc_libgcc_s_path ":${rootme}/${mldir}" + } + } + } } proc objc_target_compile { source dest type options } { @@ -124,8 +142,9 @@ proc objc_target_compile { source dest type options } { global OBJC_UNDER_TEST global TOOL_OPTIONS global ld_library_path + global objc_libgcc_s_path - set ld_library_path ".:${rootme}" + set ld_library_path ".:${objc_libgcc_s_path}" lappend options "libs=-lobjc" if { [target_info needs_status_wrapper]!="" && [info exists gluefile] } { diff --git a/libjava/ChangeLog b/libjava/ChangeLog index f507bd1805e..3827474e8e0 100644 --- a/libjava/ChangeLog +++ b/libjava/ChangeLog @@ -1,3 +1,9 @@ +2002-05-09 Jakub Jelinek + + * testsuite/lib/libjava.exp (libjava_arguments): Append all + multilib dirs containing libgcc_s*.so.1 below gcc object dir to + LD_LIBRARY_PATH. + 2002-05-08 Mark Mitchell * libjava/Makefile.am (all_java_source_files): New variable. diff --git a/libjava/testsuite/lib/libjava.exp b/libjava/testsuite/lib/libjava.exp index 4717c06b4cb..8f1f82948d4 100644 --- a/libjava/testsuite/lib/libjava.exp +++ b/libjava/testsuite/lib/libjava.exp @@ -113,6 +113,8 @@ proc libjava_init { args } { global original_ld_library_path global env objdir global env gcc_version + global tool_root_dir + global libjava_libgcc_s_path if { $libjava_initialized == 1 } { return; } @@ -170,6 +172,29 @@ proc libjava_init { args } { } } + # Finally, add the gcc build directory so that we can find the + # shared libgcc. This, like much of dejagnu, is hideous. + set libjava_libgcc_s_path {} + set gccdir [lookfor_file $tool_root_dir gcc/libgcc_s.so] + if {$gccdir != ""} { + set gccdir [file dirname $gccdir] + lappend libjava_libgcc_s_path $gccdir + set compiler ${gccdir}/xgcc + if { [is_remote host] == 0 && [which $compiler] != 0 } { + foreach i "[exec $compiler --print-multi-lib]" { + set mldir "" + regexp -- "\[a-z0-9=/\.-\]*;" $i mldir + set mldir [string trimright $mldir "\;@"] + if { "$mldir" == "." } { + continue + } + if { [llength [glob -nocomplain ${gccdir}/${mldir}/libgcc_s*.so.*]] == 1 } { + lappend libjava_libgcc_s_path "${gccdir}/${mldir}" + } + } + } + } + set libjava_initialized 1 } @@ -252,6 +277,7 @@ proc libjava_arguments {{mode compile}} { global env global tool_root_dir global gcc_version + global libjava_libgcc_s_path if [info exists LIBJAVA] { set libjava $LIBJAVA; @@ -301,13 +327,7 @@ proc libjava_arguments {{mode compile}} { } } - # Finally, add the gcc build directory so that we can find the - # shared libgcc. This, like much of dejagnu, is hideous. - set gccdir [lookfor_file $tool_root_dir gcc/libgcc_s.so] - if {$gccdir != ""} { - lappend lpath [file dirname $gccdir] - } - + set lpath [concat $lpath $libjava_libgcc_s_path] set ld_library_path [join $lpath :] # That's enough to make things work for the normal case. diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index ceb054791c5..1d9d90073f0 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,9 @@ +2002-05-09 Jakub Jelinek + + * testsuite/lib/libstdc++-v3-dg.exp (libstdc++-v3-init): Append all + multilib dirs containing libgcc_s*.so.1 below gcc object dir to + LD_LIBRARY_PATH. + 2002-05-08 Alexandre Oliva * configure.in (ORIGINAL_LD_FOR_MULTILIBS): Preserve LD at diff --git a/libstdc++-v3/testsuite/lib/libstdc++-v3-dg.exp b/libstdc++-v3/testsuite/lib/libstdc++-v3-dg.exp index 08fb58e147b..adbd148e0bb 100644 --- a/libstdc++-v3/testsuite/lib/libstdc++-v3-dg.exp +++ b/libstdc++-v3/testsuite/lib/libstdc++-v3-dg.exp @@ -67,6 +67,20 @@ proc libstdc++-v3-init { args } { set ld_library_path "." append ld_library_path ":${gccdir}" + set compiler ${gccdir}/g++ + if { [is_remote host] == 0 && [which $compiler] != 0 } { + foreach i "[exec $compiler --print-multi-lib]" { + set mldir "" + regexp -- "\[a-z0-9=/\.-\]*;" $i mldir + set mldir [string trimright $mldir "\;@"] + if { "$mldir" == "." } { + continue + } + if { [llength [glob -nocomplain ${gccdir}/${mldir}/libgcc_s*.so.*]] == 1 } { + append ld_library_path ":${gccdir}/${mldir}" + } + } + } append ld_library_path ":${blddir}/src/.libs" # On IRIX 6, we have to set variables akin to LD_LIBRARY_PATH, but