https://ccnet.stanford.edu/cgi-bin/course.cgi?cc=msande223&action="">).
However, the path that the instructions said to add to the environment
variables had a typo in it and didn't include the colon. I stupidly
missed picking up on this. Hence, I thought I had added the
environment path - but I had not. I restarted Eclipse and had the same
problems as before. Then at some stage I removed the environment path
again because I thought it may have interfered with something else.
When I re-added it I realised the typo. I got really exciting thinking
that I had fixed my problem. I returned to Eclipse and tried to debug
- I got the same error. So I started writing this email, but then
while writing this I just had a brain wave - I hadn't restarted Eclipse
since adding the cygwin path as an environment. I did so and tried
again and SUCCESS: a day after I began I finally got Eclipse to debug
with the Cygwin toolchain.
Could I make a few suggestions - this may exist but I didn't find it
until I came across the instructions I mentioned above. It would be
really helpful to have some detailed Eclipse documentation on how to
install Cygwin so that it works with Eclipse - including what parts of
Cygwin need to be installed (gcc, g++, gdb, make etc...) and the fact
that the environment variable needs to be added to the windows path if
external programs are to use cygwin commands such as gdb. Just as an
idea this could be linked in to the project properties toolchains
preferences area and even into the new project wizard if you have no
toolchains installed - like a how to install each toolchain (MinGW is
easy (besides gdb which is actually not on the normal install) but
Cygwin is a little harder) and even a checklist saying that for
instance gcc is installed but make is missing. I had a problem the
first time I installed cygwin where I didn't realise I needed make. I
had everything else, including automake etc... installed but didn't see
make in the cygwin installer. Hence, Eclispe said I didn't have the
Cygwin toolchain installed when I tried to start a project. It would
have been nice to see Eclipse say - you need to install make you
dumbarse ;)
Further, when the Cygwin toolchain is found most setups occur
automatically (like gcc, g++) - this is excellent btw. However, for
Cygwin the debug setup doesn't seem to. The path needs to be changed
to c:\cygwin\bin\gdb and the path mapping of /cygdrive/c (with c:\ as
the local file system path) must be added. Couldn't this also
automatically be configured as the default for Eclipse with Cygwin on a
Windows platform. If not perhaps more documentation that explains how
to do it. I hope all of these suggestions do not sound ungrateful. I
am only trying to make an excellent IDE even better ;)
I was also just thinking that it is strange that I could build using
gcc, make etc... but couldn't debug(run gdb) when I didn't have the
environment variable added.
Finally if you have been reading my past emails - the spaces thing
doesn't matter - both the spaces and no spaces projects work fine now.
However, as Dmitry suggests I will always use no spaces just to rule
that out as a potential error.
Thanks for all your help and sorry about the rant. Just a bit
frustrated that these setup options weren't a little more intuitive.
Thanks to everyone who tried to help,
Dylan
Below is my original email that I was writing:
Okay so I have another project which has no spaces.
C:\Users\Entecho\Desktop\Programming\EclipseWorkspace\HelloWorldTest
This project still has the same problems.
I had already done what you asked but not reported it back yet. This
is with the project that included spaces but the operations are only
only the exe which is spaceless.
This is a capture of the cygwin gdb run. NOTE: it run fine the first
time, but had problems the next times - I have no idea if this is
normal behaviour or if it is a problem and if it is a problem if it
could cause Eclipse to not run gdb properly. After trying a few times
I quit gdb. I can also run the exe from the windows cmd and from
windows explorer with a double click and it runs fine (as long as I
have added c:\cygwin\bin to my windows environment variable - using
Vista as well btw). Until I added this to the environment variable it
wouldn't work - some error about not having the cygwin dll. I thought
this may have solved my problems - but it didn't. [Actually it did I
just hadn't restarted Eclipse]
GDB in Cygwin output:
Entecho@E21 /cygdrive/c/Test
$ gdb HWTestAgain.exe
GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and
you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i686-pc-cygwin"...
(gdb) run
Starting program: /cygdrive/c/Test/HWTestAgain.exe
Loaded symbols for /cygdrive/c/Windows/system32/ntdll.dll
Loaded symbols for /cygdrive/c/Windows/system32/kernel32.dll
Loaded symbols for /usr/bin/cygwin1.dll
Loaded symbols for /cygdrive/c/Windows/system32/advapi32.dll
Loaded symbols for /cygdrive/c/Windows/system32/rpcrt4.dll
!!!Hello World!!!
Program exited normally.
(gdb) run
Starting program: /cygdrive/c/Test/HWTestAgain.exe
Loaded symbols for /cygdrive/c/Windows/system32/ntdll.dll
Error: dll starting at 0x48001000 not found.
!!!Hello World!!!
Program exited normally.
(gdb) run
warning: cannot close "/cygdrive/c/Windows/system32/ntdll.dll": Bad
file descrip
tor
Starting program: /cygdrive/c/Test/HWTestAgain.exe
Loaded symbols for /cygdrive/c/Windows/system32/ntdll.dll
Error: dll starting at 0x48001000 not found.
!!!Hello World!!!
Program exited normally.
(gdb) run
warning: cannot close "/cygdrive/c/Windows/system32/ntdll.dll": Bad
file descrip
tor
Starting program: /cygdrive/c/Test/HWTestAgain.exe
Loaded symbols for /cygdrive/c/Windows/system32/ntdll.dll
Error: dll starting at 0x48001000 not found.
!!!Hello World!!!
Program exited normally.
(gdb) quit
Dmitry Smirnov wrote:
First, I would recommend to move the project to the path that does not
use spaces.
Could you please also
1. run the program with no debugger (from windows console, for example)
2. run the program with console gdb (just run command line in the
directory with HelloWorld.exe, enter "gdb HelloWorld.exe" (or
"C:\cygwin\bin\gdb.exe HelloWorld.exe" and then issue a "run" command
in the GDB console).
These runs could help to find out the problem.
P.S. I was using debug configuration with the full path to GDB (I had
few different versions installed) and did not find any problems with
it. So, it should work...
Dmitry
2008/11/18 Dylan Reynolds <dylan.reynolds@xxxxxxxxxxxxxx>:
First of all apologies for including these old posts in this post. I could
not figure out how to reply to the old posts and I thought they were
important because they related to my new post.
I am having the same problem as Pranay,
I already had Cygwin installed - it has the latest 6.8.2 gdb installed. I
am yet to try and debug from the Cygwin command line. I will try that
shortly. I get the same msg as Pranay pasted above.
Hence, in Eclipse I altered the settings for the debugger for the Hello
World exe. I changed the debugger from simplt gdb, to the full path
C:\cygwin\bin\gdb.exe. I have no idea what gdb on its own would refer to -
i am using the Cygwin toolchain so perhaps it simply executes gdb using this
toolchain.
The result of specifying the path to the debugger is totally different but
still ends with an error. Now I get this in my console (HW Test Again is
the project name - the rest is simply the c++ hello world app that you can
automatically open with Eclipse new project wizard):
Warning: /Users/Entecho/Desktop/Programming/EclipseWorkspace/HW Test
Again/Debug/src;C: No such file or directory.
Warning: /Users/Entecho/Desktop/Programming/EclipseWorkspace/HW Test
Again/Debug;C: No such file or directory.
Warning: /Users/Entecho/Desktop/Programming/EclipseWorkspace/HW Test
Again;C: No such file or directory.
Warning: /cygdrive/c/Users/Entecho/Desktop/Programming/EclipseWorkspace/HW
Test Again/C: No such file or directory.
No source file named HelloWorldTest.cpp.
gdb: unknown target exception 0xc0000135 at 0x773e9cac
You can't do that without a process to debug.
kill
The program is not being run.
Furthermore, the error msg says:
Execution is suspended because of error.
You can't do that without a process to debug.
Now I realise that this could be because using the path is totally the wrong
thing to do - please advise me if this is the case. With the MinGW gdb it
is specified using the path so I thought that perhaps this would work.
At the moment I still can't debug with the current Ganymede Eclipse and the
current Cygwin - whether using the default setting: gdb or using the path
(as explained above): C:\cygwin\bin\gdb.exe
Any help with this would be greatly appreaciated.
Kind Regards
Dylan Reynolds
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