docs describe:
http://gcc.gnu.org/onlinedocs/gcc/Language-Independent-Options.html#Language-Independent-Options
-fdiagnostics-show-options
This option instructs the diagnostic machinery to add text to each
diagnostic emitted, which indicates which command line option directly controls
that diagnostic, when such an option is known to the diagnostic machinery.
however, it appears that the option name is actually:
-fdiagnostics-show-option
and an attempt to use options (plural) yields:
cc1plus: error: unrecognized command line option "-fdiagnostics-show-options"
g++ -v output:
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.1.1/configure --enable-threads=posix
--prefix=/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1 --enable-languages=c,c++
--enable-shared --enable-__cxa_atexit
Thread model: posix
gcc version 4.1.1
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.1.1/cc1plus
-quiet -v -iprefix
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/
-D_GNU_SOURCE t.c -quiet -dumpbase t.c -mtune=k8 -auxbase t -version
-fdiagnostics-show-options -o /home/peeterj/tmp/cc7r36nu.s
cc1plus: error: unrecognized command line option "-fdiagnostics-show-options"
ignoring nonexistent directory
"/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../x86_64-unknown-linux-gnu/include"
ignoring duplicate directory
"/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1"
ignoring duplicate directory
"/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1/x86_64-unknown-linux-gnu"
ignoring duplicate directory
"/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1/backward"
ignoring duplicate directory
"/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/include"
ignoring nonexistent directory
"/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1/x86_64-unknown-linux-gnu
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/../../../../include/c++/4.1.1/backward
/view/peeterj_hc/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.1.1/include
/usr/local/include
/vbs/bldsupp.linux1/linuxamd64/gcc4.1.1/include
/usr/include
End of search list.
GNU C++ version 4.1.1 (x86_64-unknown-linux-gnu)
compiled by GNU C version 3.3.3 (SuSE Linux).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
sample source code and command line:
gcc4.1.1/bin/g++ -fdiagnostics-show-options -c t.c
t.c:
int main(){}
--
Summary: doc reference to -fdiagnostics-show-options looks like
it should be -fdiagnostics-show-option
Product: gcc
Version: 4.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: peeterj at ca dot ibm dot com
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28448
