Hi,
I have my environment variables set to German (LANG=de_DE.UTF-8), and
nevertheless the gcc compiler emits its warnings in English *if* invoked
by libtool.
Example (when compiling CLN-1.2.0):
$ /bin/sh ../libtool --mode=compile g++ -g -O2 -Wall -I../include -I../include
-I./base -c ./base/cl_as_exception.cc
g++ -g -O2 -Wall -I../include -I../include -I./base -c
./base/cl_as_exception.cc -fPIC -DPIC -o .libs/cl_as_exception.o
In file included from ./base/cl_N.h:6,
from ./base/cl_as_exception.cc:13:
../include/cln/number.h: In constructor 'cln::cl_number::cl_number(float)':
../include/cln/number.h:238: warning: type-punning to incomplete type might
break strict-aliasing rules
../include/cln/number.h: In member function 'cln::cl_number&
cln::cl_number::operator=(float)':
../include/cln/number.h:238: warning: type-punning to incomplete type might
break strict-aliasing rules
../include/cln/number.h: In constructor 'cln::cl_number::cl_number(double)':
../include/cln/number.h:239: warning: type-punning to incomplete type might
break strict-aliasing rules
../include/cln/number.h: In member function 'cln::cl_number&
cln::cl_number::operator=(double)':
../include/cln/number.h:239: warning: type-punning to incomplete type might
break strict-aliasing rules
g++ -g -O2 -Wall -I../include -I../include -I./base -c
./base/cl_as_exception.cc -o cl_as_exception.o >/dev/null 2>&1
But just copying the shown command into a shell prompt yields the warnings
in English:
$ g++ -g -O2 -Wall -I../include -I../include -I./base -c
./base/cl_as_exception.cc -fPIC -DPIC -o .libs/cl_as_exception.o
In file included from ./base/cl_N.h:6,
from ./base/cl_as_exception.cc:13:
../include/cln/number.h: In constructor »cln::cl_number::cl_number(float)«:
../include/cln/number.h:238: Warnung: Type-Punning auf unvollständigen Typen
kann strict-aliasing-Regeln verletzen
../include/cln/number.h: In member function »cln::cl_number&
cln::cl_number::operator=(float)«:
../include/cln/number.h:238: Warnung: Type-Punning auf unvollständigen Typen
kann strict-aliasing-Regeln verletzen
../include/cln/number.h: In constructor »cln::cl_number::cl_number(double)«:
../include/cln/number.h:239: Warnung: Type-Punning auf unvollständigen Typen
kann strict-aliasing-Regeln verletzen
../include/cln/number.h: In member function »cln::cl_number&
cln::cl_number::operator=(double)«:
../include/cln/number.h:239: Warnung: Type-Punning auf unvollständigen Typen
kann strict-aliasing-Regeln verletzen
Find attached a patch for it, relative to libtool-1.5.24 (tested),
and a tentative patch relative to the libtool CVS (untested).
Note that $ltenv can only be applied to commands that run a program, not to
shell builtins like "eval ..." or "(cd ... && ...)".
Bruno
2008-01-20 Bruno Haible <[EMAIL PROTECTED]>
* ltmain.in (lt_env): New variable. Use it when running commands.
*** ltmain.in.bak 2007-06-24 03:30:51.000000000 +0200
--- ltmain.in 2008-01-20 17:11:15.000000000 +0100
***************
*** 113,126 ****
--- 113,131 ----
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
# We save the old values to restore during execute mode.
+ lt_env=
for lt_var in LANG LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
do
eval "if test \"\${$lt_var+set}\" = set; then
save_$lt_var=\$$lt_var
+ lt_env=\"$lt_var=\$$lt_var \$lt_env\"
$lt_var=C
export $lt_var
fi"
done
+ if test -n "$lt_env"; then
+ lt_env="env $lt_env"
+ fi
# Make sure IFS has a sensible default
lt_nl='
***************
*** 956,962 ****
$run $rm "$lobj" "$output_obj"
$show "$command"
! if $run eval "$command"; then :
else
test -n "$output_obj" && $run $rm $removelist
exit $EXIT_FAILURE
--- 961,967 ----
$run $rm "$lobj" "$output_obj"
$show "$command"
! if $run eval $lt_env "$command"; then :
else
test -n "$output_obj" && $run $rm $removelist
exit $EXIT_FAILURE
***************
*** 1028,1034 ****
command="$command$suppress_output"
$run $rm "$obj" "$output_obj"
$show "$command"
! if $run eval "$command"; then :
else
$run $rm $removelist
exit $EXIT_FAILURE
--- 1033,1039 ----
command="$command$suppress_output"
$run $rm "$obj" "$output_obj"
$show "$command"
! if $run eval $lt_env "$command"; then :
else
$run $rm $removelist
exit $EXIT_FAILURE
2008-01-20 Bruno Haible <[EMAIL PROTECTED]>
* libltdl/config/ltmain.m4sh (lt_env): New variable.
* libltdl/config/general.m4sh (func_show_eval): Use it.
*** libltdl/config/ltmain.m4sh.bak 2008-01-20 17:08:53.000000000 +0100
--- libltdl/config/ltmain.m4sh 2008-01-20 17:13:06.000000000 +0100
***************
*** 96,109 ****
--- 96,114 ----
# Only set LANG and LC_ALL to C if already set.
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
+ lt_env=
for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
do
eval "if test \"\${$lt_var+set}\" = set; then
save_$lt_var=\$$lt_var
+ lt_env=\"$lt_var=\$$lt_var \$lt_env\"
$lt_var=C
export $lt_var
fi"
done
+ if test -n "$lt_env"; then
+ lt_env="env $lt_env"
+ fi
$lt_unset CDPATH
*** libltdl/config/general.m4sh.bak 2007-05-27 23:21:23.000000000 +0200
--- libltdl/config/general.m4sh 2008-01-20 17:15:55.000000000 +0100
***************
*** 337,343 ****
}
if ${opt_dry_run-false}; then :; else
! eval "$my_cmd"
my_status=$?
if test "$my_status" -eq 0; then :; else
eval "(exit $my_status); $my_fail_exp"
--- 337,343 ----
}
if ${opt_dry_run-false}; then :; else
! eval $lt_env "$my_cmd"
my_status=$?
if test "$my_status" -eq 0; then :; else
eval "(exit $my_status); $my_fail_exp"
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