Hi,
I have update the patch according to some comments from GDB community.
Please find the attachments.
Thanks and Regards,
Nitish K Mishra
On Wed, Mar 1, 2017 at 1:33 PM, Nitish Kumar Mishra
<mishra.nitish...@gmail.com> wrote:
> Hi,
> I have opened a defect for the same here:
> https://sourceware.org/bugzilla/show_bug.cgi?id=21187
>
> Thanks and Regards,
> Nitish K Mishra
>
> On Wed, Mar 1, 2017 at 1:25 PM, Nitish Kumar Mishra
> <mishra.nitish...@gmail.com> wrote:
>> Hi,
>> The patch is for the broken exception handling in GDB on AIX platform.
>> When linked statically with libstdc++ and libgcc on AIX platform, GDB
>> is facing broken exception handling issues.
>> Following is the error output when GDB is linked statically with
>> mentioned libraries: (GDB-7.12.1, built with GCC-6.2, 64 bit mode, AIX
>> platform):
>>
>> # ./gdb
>> GNU gdb (GDB) 7.12.1
>> Copyright (C) 2017 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "powerpc64-ibm-aix7.2.0.0".
>> Type "show configuration" for configuration details.
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>.
>> Find the GDB manual and other documentation resources online at:
>> <http://www.gnu.org/software/gdb/documentation/>.
>> For help, type "help".
>> Type "apropos word" to search for commands related to "word".
>> (gdb) kill
>> terminate called after throwing an instance of
>> 'gdb_exception_RETURN_MASK_ERROR'
>> IOT/Abort trap (core dumped)
>>
>>
>> The issue has been discussed here:
>> https://sourceware.org/ml/gdb/2017-02/msg00047.html
>>
>> I have manually built and tested GDB-7.12.1 with this patch on AIX-7.2
>> and Ubuntu-16.04 with GCC-6.2 and GCC-4.8.5. On both operating system
>> GDB is working fine with the patch. I generated configure file using
>> autoconf-2.64.
>>
>> The attached patch is for configure.ac file in binutils-gdb, in which
>> one more option "--disable-staticlib" is implemented to link libstdc++
>> and libgcc dynamically.
>> I believe this issue is specific to AIX platform.
>>
>> Please find the attachment for patch file, and ChangeLog file.
>>
>> Thanks and Regards,
>> Nitish K Mishra
2016-03-01 Nitish K Mishra <nitis...@in.ibm.com>
* configure.ac: Include one more option "--disable-staticlib"
to link libstdc++ and libgcc dynamically.diff --git a/configure.ac b/configure.ac
index 3ec86c1..c400251 100644
--- a/configure.ac
+++ b/configure.ac
@@ -140,7 +140,7 @@ host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktr
# binutils, gas and ld appear in that order because it makes sense to run
# "make check" in that particular order.
# If --enable-gold is used, "gold" may replace "ld".
-host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
+host_tools="flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
# libgcj represents the runtime libraries only used by gcj.
libgcj="target-libffi \
@@ -337,7 +337,7 @@ case "${ENABLE_GOLD}" in
*-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
| *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
| *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
- | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-fuchsia*)
+ | *-*-solaris2* | *-*-nto* | *-*-nacl*)
case "${target}" in
*-*-linux*aout* | *-*-linux*oldld*)
;;
@@ -471,6 +471,13 @@ ENABLE_LIBSTDCXX=default)
noconfigdirs="$noconfigdirs target-libstdc++-v3"
fi]
+AC_ARG_ENABLE(staticlib,
+AS_HELP_STRING([--disable-staticlib],
+ [do not link libstdc++ and libgcc library statically, default is static linking]),
+ENABLE_STATICLIB=$enableval,
+ENABLE_STATICLIB=yes)
+
+
# If this is accelerator compiler and its target is intelmic we enable
# target liboffloadmic by default. If this is compiler with offloading
# for intelmic we enable host liboffloadmic by default. Otherwise
@@ -1406,9 +1413,10 @@ if test -z "$LD"; then
fi
fi
-# Check whether -static-libstdc++ -static-libgcc is supported.
+# If ENABLE_STATICLIB is set for configuration, check whether -static-libstdc++ -static-libgcc is supported
have_static_libs=no
-if test "$GCC" = yes; then
+if test "$ENABLE_STATICLIB" = yes; then
+ if test "$GCC" = yes; then
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
@@ -1424,6 +1432,7 @@ int main() {}],
AC_LANG_POP(C++)
LDFLAGS="$saved_LDFLAGS"
+ fi
fi
ACX_PROG_GNAT
@@ -1741,6 +1750,9 @@ AC_ARG_WITH(stage1-ldflags,
# trust that they are doing what they want.
if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
stage1_ldflags="-static-libstdc++ -static-libgcc"
+ else
+ # If static lib is disabled.
+ stage1_ldflags=""
fi])
AC_SUBST(stage1_ldflags)
@@ -1768,8 +1780,11 @@ AC_ARG_WITH(boot-ldflags,
# In stages 2 and 3, default to linking libstdc++ and libgcc
# statically. But if the user explicitly specified the libraries to
# use, trust that they are doing what they want.
- if test "$poststage1_libs" = ""; then
+ if test "$poststage1_libs" = "" -a "$have_static_libs" = yes; then
poststage1_ldflags="-static-libstdc++ -static-libgcc"
+ else
+ # If static library linking is disabled.
+ poststage1_ldflags=""
fi])
AC_SUBST(poststage1_ldflags)
