PATCH: PR other/17466: Testsuites in gcc override LD_LIBRARY_PATH ([RFC] Alternative LD_LIBRARY_PATH)

H. J. Lu hjl@lucon.org
Wed Nov 24 20:03:00 GMT 2004


On Wed, Nov 24, 2004 at 08:39:24AM -0800, H. J. Lu wrote:
> On Wed, Nov 24, 2004 at 10:18:45AM -0500, John David Anglin wrote:
> > > Works fine on SPARC/Solaris, except for libjava: all execution tests now
> > > fail 
> > > with:
> > > 
> > > set_ld_library_path_env_vars: ld_library_path=.
> > > Setting LD_LIBRARY_PATH 
> > > to .:.:.:/opt/build/eric/gcc/gcc:/opt/build/eric/local/lib
> > > ld.so.1: gij: fatal: libgij.so.0: open failed: No such file or directory
> > > FAIL: Array_3 execution - gij test
> > > UNTESTED: Array_3 output - gij test
> > 
> > Ok, I see this on hppa-linux but the tests are picking up an installed
> > library so they don't fail.  It looks like the path set in ld_library_path
> > in the libjava test is getting overridden by a sourced file at execution
> > time.  There's only a couple of places this could occur.  I'll look at
> > this tonight.
> 
> Try not to use the global ld_library_path. See
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17469
> 
> 

This patch does 2 things:

1. Remove the global ld_library_path.
2. Consolidate libgcc_s.so detection in the gcc directory.


H.J.
----
gcc/testsuite/

2004-11-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR other/17466:
	* g++.dg/compat/compat.exp (ld_library_path): Renamed to ...
	(last_ld_library_path): This.
	(save_ld_library_path): Updated.
	(compat-use-alt-compiler): Don't use global ld_library_path.
	Update call to set_ld_library_path_env_vars.
	(compat-use-tst-compiler): Likewise.

	* lib/g++.exp (g++_link_flags): Don't use global
	ld_library_path. Use ${libgcc_s_path} for gcc shared library
	directory. Update call to set_ld_library_path_env_vars.
	* lib/gcc-dg.exp: Likewise.
	* lib/gfortran.exp (gfortran_link_flags): Likewise.
	* lib/objc.exp (objc_target_compile): Likewise.
	* lib/treelang.exp (treelang_target_compile): Likewise.

	* lib/gcc-defs.exp (libgcc_s_path): Initialize global variable.

	* lib/gcc.exp (gcc_init): Call set_ld_library_path_env_vars
	with $libgcc_s_path.

	* lib/target-libpath.exp (set_ld_library_path_env_vars): Make
	ld_library_path the argument.

libffi/

2004-11-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR other/17466:
	* testsuite/lib/libffi-dg.exp (libffi-init): Don't use global
	ld_library_path. Update call to set_ld_library_path_env_vars.

libjava/

2004-11-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR other/17466:
	* testsuite/lib/libjava.exp (libjava_arguments): Don't use
	global ld_library_path. Update call to set_ld_library_path_env_vars.
	(gcj_link): Likewise.
	(libjava_invoke): Likewise.
	* testsuite/libjava.jacks/jacks.exp (gcj_jacks_write): Likewise.

libmudflap/

2004-11-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR other/17466:
	* testsuite/lib/libmudflap.exp (libmudflap-init): Don't use
	global ld_library_path. Update call to
	set_ld_library_path_env_vars.

libstdc++-v3/

2004-11-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR other/17466:
	* testsuite/lib/libstdc++.exp (libstdc++_init): Don't use global
	ld_library_path. Update call to set_ld_library_path_env_vars.

--- gcc/gcc/testsuite/g++.dg/compat/compat.exp.shlib	2004-11-24 08:45:59.000000000 -0800
+++ gcc/gcc/testsuite/g++.dg/compat/compat.exp	2004-11-24 10:45:09.640268850 -0800
@@ -30,7 +30,7 @@ if $tracelevel then {
 }
 
 global GXX_UNDER_TEST
-global ld_library_path
+global last_ld_library_path
 
 # Load procedures from common libraries. 
 load_lib standard.exp
@@ -44,7 +44,7 @@ proc compat-use-alt-compiler { } {
     global GXX_UNDER_TEST ALT_CXX_UNDER_TEST
     global CXXFLAGS
     global ALWAYS_CXXFLAGS
-    global ld_library_path alt_ld_library_path
+    global alt_ld_library_path
     global same_alt
 
     # We don't need to do this if the alternate compiler is actually
@@ -53,8 +53,7 @@ proc compat-use-alt-compiler { } {
 	set GXX_UNDER_TEST $ALT_CXX_UNDER_TEST
 	set CXXFLAGS ""
 	set ALWAYS_CXXFLAGS ""
-	set ld_library_path $alt_ld_library_path
-	set_ld_library_path_env_vars
+	set_ld_library_path_env_vars $alt_ld_library_path
     }
 }
 
@@ -65,7 +64,7 @@ proc compat-use-tst-compiler { } {
     global GXX_UNDER_TEST save_gxx_under_test
     global CXXFLAGS save_cxxflags
     global ALWAYS_CXXFLAGS save_always_cxxflags
-    global ld_library_path save_ld_library_path
+    global save_ld_library_path
     global same_alt
 
     # We don't need to do this if the alternate compiler is actually
@@ -75,8 +74,7 @@ proc compat-use-tst-compiler { } {
 	set GXX_UNDER_TEST $save_gxx_under_test
 	set CXXFLAGS $save_cxxflags
 	set ALWAYS_CXXFLAGS $save_always_cxxflags
-	set ld_library_path $save_ld_library_path
-	set_ld_library_path_env_vars
+	set_ld_library_path_env_vars $save_ld_library_path
     }
 }
 
@@ -91,7 +89,7 @@ g++_init
 set save_gxx_under_test $GXX_UNDER_TEST
 set save_cxxflags $CXXFLAGS
 set save_always_cxxflags $ALWAYS_CXXFLAGS
-set save_ld_library_path $ld_library_path
+set save_ld_library_path $last_ld_library_path
 
 # Define an identifier for use with this suite to avoid name conflicts
 # with other compat tests running at the same time.
--- gcc/gcc/testsuite/lib/g++.exp.shlib	2004-11-24 08:46:14.000000000 -0800
+++ gcc/gcc/testsuite/lib/g++.exp	2004-11-24 09:32:28.644664799 -0800
@@ -97,10 +97,8 @@ proc g++_include_flags { paths } {
 #
 
 proc g++_link_flags { paths } {
-    global rootme
+    global libgcc_s_path
     global srcdir
-    global ld_library_path
-    global GXX_UNDER_TEST
 
     set gccpath ${paths}
     set libio_dir ""
@@ -129,21 +127,7 @@ proc g++_link_flags { paths } {
       if [file exists "${gccpath}/librx/librx.a"] {
           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}"
-	  }
-	}
-      }
+      append ld_library_path ":${libgcc_s_path}"
     } else {
       global tool_root_dir;
 
@@ -167,7 +151,7 @@ proc g++_link_flags { paths } {
       }
     }
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
 
     return "$flags"
 }
--- gcc/gcc/testsuite/lib/gcc-defs.exp.shlib	2004-09-13 15:36:13.000000000 -0700
+++ gcc/gcc/testsuite/lib/gcc-defs.exp	2004-11-24 09:45:03.495819649 -0800
@@ -219,3 +219,22 @@ proc dg-additional-files-options { optio
 
     return $options
 }
+
+# libgcc_s_path -- the gcc shared library directory.
+global rootme
+global libgcc_s_path
+set libgcc_s_path "${rootme}"
+set compiler [lindex [find_gcc] 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 libgcc_s_path ":${rootme}/${mldir}"
+	}
+    }
+}
--- gcc/gcc/testsuite/lib/gcc-dg.exp.shlib	2004-11-24 08:46:14.000000000 -0800
+++ gcc/gcc/testsuite/lib/gcc-dg.exp	2004-11-24 09:47:47.662540066 -0800
@@ -46,34 +46,12 @@ if ![info exists TORTURE_OPTIONS] {
 	{ -Os } ]
 }
 
-global GCC_UNDER_TEST
-if ![info exists GCC_UNDER_TEST] {
-    set GCC_UNDER_TEST "[find_gcc]"
-}
-
-global rootme
-global ld_library_path
 global orig_environment_saved
 
 # This file may be sourced, so don't override environment settings
 # that have been previously setup.
 if { $orig_environment_saved == 0 } {
-    set ld_library_path "${rootme}"
-    set compiler [lindex $GCC_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}"
-	    }
-	}
-    }
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars "${libgcc_s_path}"
 }
 
 # Split TORTURE_OPTIONS into two choices: one for testcases with loops and
--- gcc/gcc/testsuite/lib/gcc.exp.shlib	2004-09-13 15:36:13.000000000 -0700
+++ gcc/gcc/testsuite/lib/gcc.exp	2004-11-24 09:52:18.505432928 -0800
@@ -28,6 +28,7 @@
 load_lib libgloss.exp
 load_lib prune.exp
 load_lib gcc-defs.exp
+load_lib target-libpath.exp
 
 #
 # GCC_UNDER_TEST is the compiler under test.
@@ -86,6 +87,7 @@ proc gcc_version { } {
 set gcc_initialized 0
 
 proc gcc_init { args } {
+    global libgcc_s_path
     global tmpdir
     global libdir
     global gluefile wrap_flags
@@ -108,6 +110,8 @@ proc gcc_init { args } {
     }
 
     gcc_maybe_build_wrapper "${tmpdir}/gcc-testglue.o"
+
+    set_ld_library_path_env_vars $libgcc_s_path
 }
 
 #
--- gcc/gcc/testsuite/lib/gfortran.exp.shlib	2004-11-24 08:46:14.000000000 -0800
+++ gcc/gcc/testsuite/lib/gfortran.exp	2004-11-24 09:50:50.000000000 -0800
@@ -73,9 +73,8 @@ proc gfortran_version { } {
 #
 
 proc gfortran_link_flags { paths } {
-    global rootme
+    global libgcc_s_path 
     global srcdir
-    global ld_library_path
     global GFORTRAN_UNDER_TEST
 
     set gccpath ${paths}
@@ -94,24 +93,10 @@ proc gfortran_link_flags { paths } {
       if [file exists "${gccpath}/libiberty/libiberty.a"] {
           append flags "-L${gccpath}/libiberty "
       }
-      append ld_library_path ":${rootme}"
-      set compiler [lindex $GFORTRAN_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}"
-	  }
-	}
-      }
+      append ld_library_path ":${libgcc_s_path}"
     }
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
 
     return "$flags"
 }
--- gcc/gcc/testsuite/lib/objc.exp.shlib	2004-11-24 08:46:14.000000000 -0800
+++ gcc/gcc/testsuite/lib/objc.exp	2004-11-24 09:53:07.545076323 -0800
@@ -86,14 +86,12 @@ 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
 
     # We set LC_ALL and LANG to C so that we get the same error messages as expected.
     setenv LC_ALL C
@@ -114,22 +112,6 @@ proc objc_init { args } {
     }
 
     objc_maybe_build_wrapper "${tmpdir}/objc-testglue.o"
-
-    set objc_libgcc_s_path "${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 } {
@@ -139,10 +121,9 @@ proc objc_target_compile { source dest t
     global srcdir
     global OBJC_UNDER_TEST
     global TOOL_OPTIONS
-    global ld_library_path
-    global objc_libgcc_s_path
+    global libgcc_s_path
 
-    set ld_library_path ".:${objc_libgcc_s_path}"
+    set ld_library_path ".:${libgcc_s_path}"
     lappend options "libs=-lobjc"
 
     if { [target_info needs_status_wrapper]!="" && [info exists gluefile] } {
@@ -188,7 +169,7 @@ proc objc_target_compile { source dest t
     }
     lappend options "compiler=$OBJC_UNDER_TEST"
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
 
     return [target_compile $source $dest $type $options]
 }
--- gcc/gcc/testsuite/lib/target-libpath.exp.shlib	2004-11-23 20:39:30.000000000 -0800
+++ gcc/gcc/testsuite/lib/target-libpath.exp	2004-11-24 10:44:38.099355768 -0800
@@ -30,8 +30,7 @@ set orig_dyld_library_path_saved 0
 # proc set_ld_library_path_env_vars { }
 #######################################
 
-proc set_ld_library_path_env_vars { } {
-  global ld_library_path
+proc set_ld_library_path_env_vars { ld_library_path } {
   global orig_environment_saved
   global orig_ld_library_path_saved
   global orig_ld_run_path_saved
@@ -49,12 +48,16 @@ proc set_ld_library_path_env_vars { } {
   global orig_ld_library_path_32
   global orig_ld_library_path_64
   global orig_dyld_library_path
+  global last_ld_library_path
 
   # Setting the ld library path causes trouble when testing cross-compilers.
   if { [is_remote target] } {
     return
   }
 
+  # We keep a copy of the argument.
+  set last_ld_library_path $ld_library_path
+
   if { $orig_environment_saved == 0 } {
     global env;
 
--- gcc/gcc/testsuite/lib/treelang.exp.shlib	2004-11-24 08:46:15.000000000 -0800
+++ gcc/gcc/testsuite/lib/treelang.exp	2004-11-24 09:53:49.000000000 -0800
@@ -83,14 +83,12 @@ proc default_treelang_version { } {
 set treelang_initialized 0
 
 proc treelang_init { args } {
-    global rootme
     global tmpdir
     global libdir
     global gluefile wrap_flags
     global treelang_initialized
     global TREELANG_UNDER_TEST
     global TOOL_EXECUTABLE
-    global treelang_libgcc_s_path
 
 
     # We set LC_ALL and LANG to C so that we get the same error messages as expected.
@@ -113,22 +111,6 @@ proc treelang_init { args } {
     }
 
     treelang_maybe_build_wrapper "${tmpdir}/treelang-testglue.o"
-
-    set treelang_libgcc_s_path "${rootme}"
-    set compiler [lindex $TREELANG_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 treelang_libgcc_s_path ":${rootme}/${mldir}"
-	    }
-	}
-    }
 }
 
 proc treelang_target_compile { source dest type options } {
@@ -138,11 +120,10 @@ proc treelang_target_compile { source de
     global srcdir
     global TREELANG_UNDER_TEST
     global TOOL_OPTIONS
-    global ld_library_path
-    global treelang_libgcc_s_path
+    global libgcc_s_path
 
-    set ld_library_path ".:${treelang_libgcc_s_path}"
-    set_ld_library_path_env_vars
+    set ld_library_path ".:${libgcc_s_path}"
+    set_ld_library_path_env_vars $ld_library_path
     lappend options "libs=-ltreelang"
 
     if { [target_info needs_status_wrapper]!="" && [info exists gluefile] } {
--- gcc/libffi/testsuite/lib/libffi-dg.exp.shlib	2004-11-24 08:46:21.000000000 -0800
+++ gcc/libffi/testsuite/lib/libffi-dg.exp	2004-11-24 09:54:30.382338809 -0800
@@ -84,7 +84,6 @@ proc libffi-init { args } {
     global libffi_include
     global libffi_link_flags
     global tool_root_dir
-    global ld_library_path
 
     set blddirffi [lookfor_file [get_multilibs] libffi]
     verbose "libffi $blddirffi"
@@ -133,7 +132,7 @@ proc libffi-init { args } {
 	lappend libffi_link_flags "-L${blddircxx}/src/.libs"
     }
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
     libffi_maybe_build_wrapper "${objdir}/testglue.o"
 }
 
--- gcc/libjava/testsuite/lib/libjava.exp.shlib	2004-11-24 08:46:53.000000000 -0800
+++ gcc/libjava/testsuite/lib/libjava.exp	2004-11-24 09:55:29.747643773 -0800
@@ -323,7 +323,6 @@ proc libjava_arguments {{mode compile}} 
     global tool_root_dir
     global libgcj_jar
     global libjava_libgcc_s_path
-    global ld_library_path
     global target_triplet
 
     if [info exists LIBJAVA] {
@@ -357,7 +356,7 @@ proc libjava_arguments {{mode compile}} 
     # If we wanted to handle an arbitrary value of libjava,
     # then we'd have to do a lot more work.
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
     if [info exists env(LD_LIBRARY_PATH)] {
 	verbose "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
     }
@@ -453,14 +452,13 @@ proc gcj_link {program main files {optio
 # Invoke the program and see what happens.  Return 0 on failure.
 proc gcj_invoke {program expectFile ld_library_additions} {
   global env
-  global ld_library_path
 
   set ld_library_path .
   if {[llength $ld_library_additions] > 0} {
     append ld_library_path :[join $ld_library_additions :]
   }
 
-  set_ld_library_path_env_vars
+  set_ld_library_path_env_vars $ld_library_path
   if [info exists env(LD_LIBRARY_PATH)] {
     verbose "LD_LIBRARY_PATH=$env(LD_LIBRARY_PATH)"
   }
@@ -498,14 +496,13 @@ proc gcj_invoke {program expectFile ld_l
 proc libjava_invoke {errname testName optName executable inpfile resultfile
 		      ld_library_additions args} {
     global env
-    global ld_library_path
 
     set ld_library_path .
     if {[llength $ld_library_additions] > 0} {
 	append ld_library_path :[join $ld_library_additions :]
     }
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
     if [info exists env(LD_LIBRARY_PATH)] {
 	verbose "LD_LIBRARY_PATH=$env(LD_LIBRARY_PATH)"
     }
--- gcc/libjava/testsuite/libjava.jacks/jacks.exp.shlib	2004-11-24 08:46:53.000000000 -0800
+++ gcc/libjava/testsuite/libjava.jacks/jacks.exp	2004-11-24 09:56:41.997278646 -0800
@@ -23,7 +23,6 @@ proc gcj_jacks_write {filename} {
   global GCJ_UNDER_TEST
   global libgcj_jar
   global libjava_libgcc_s_path
-  global ld_library_path
 
   set gcjl [split $GCJ_UNDER_TEST]
   set gcj_cmd [lindex $gcjl 0]
@@ -50,8 +49,7 @@ proc gcj_jacks_write {filename} {
   # puts $fd "set tcltest::testConstraints(jvm) 1"
   close $fd
 
-  set ld_library_path $libjava_libgcc_s_path
-  set_ld_library_path_env_vars
+  set_ld_library_path_env_vars $libjava_libgcc_s_path
 }
 
 proc gcj_jacks_parse {file} {
--- gcc/libmudflap/testsuite/lib/libmudflap.exp.shlib	2004-11-24 08:46:56.000000000 -0800
+++ gcc/libmudflap/testsuite/lib/libmudflap.exp	2004-11-24 09:57:01.933694453 -0800
@@ -37,7 +37,6 @@ proc libmudflap-init { language } {
     global includes
     global libs
     global gluefile wrap_flags
-    global ld_library_path
 
     switch $language {
         "c" { set cxx [find_gcc] }
@@ -101,7 +100,7 @@ proc libmudflap-init { language } {
     global add_flags
     append add_flags " $mfconfig_libs"
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
     if [info exists env(LD_LIBRARY_PATH)] {
 	verbose -log "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
     }
--- gcc/libstdc++-v3/testsuite/lib/libstdc++.exp.shlib	2004-11-24 08:47:55.000000000 -0800
+++ gcc/libstdc++-v3/testsuite/lib/libstdc++.exp	2004-11-24 09:57:15.900884001 -0800
@@ -82,7 +82,6 @@ proc libstdc++_init { testfile } {
     global cxx cxxflags
     global includes
     global gluefile wrap_flags
-    global ld_library_path
     global target_triplet
 
     # We set LC_ALL and LANG to C so that we get the same error messages as expected.
@@ -151,7 +150,7 @@ proc libstdc++_init { testfile } {
     }
     append ld_library_path ":${blddir}/src/.libs"
 
-    set_ld_library_path_env_vars
+    set_ld_library_path_env_vars $ld_library_path
     if [info exists env(LD_LIBRARY_PATH)] {
       verbose -log "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
     }



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