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Using the -g flag but gdb still sais: no debugging symbols found

From: Gary <plap1234 at yahoo dot com>
To: gcc-help at gcc dot gnu dot org
Date: Thu, 6 Dec 2007 16:50:10 -0800 (PST)
Subject: Using the -g flag but gdb still sais: no debugging symbols found
Hi,

I'm using CYGWIN to compile a source code which I've
downloaded.
I want to debug this code, which consists of many
source files.
I have edited the makefile to the best of my
understanding to include the -g flag when the make
utility calls g++. According to the make output -g is
indeed called but still I can't debug. What am I doing
wrong?

I am enclosing the makefile and also the make output
when it was run. There were some warnings output as
well, I don't think they are important but I don't
know how to redirect them to a file, they are
outputted to the shell.

Your help is much appreciated,

thanks,

Gary

The makefile:

#
# Makefile for cygmin/mingw - unrar
#
# Note: you have to 'make clean' before you can build
#    the sfx module
#

# POSIX using Cygmin GCC 3.3.1
CXX = g++
CXXFLAGS =  -O2 -Wno-deprecated -g
DEFINES = -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-DLITTLE_ENDIAN

# Win32 using Cygmin GCC 3.3.1
#CXX = g++ -mno-cygwin
#CXXFLAGS = -g -O2 -Wno-deprecated
#DEFINES = -D_MSC_VER -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE

# Win32 using Mingw32 GCC 3.3.2
#CXX = g++
#CXXFLAGS = -O2 -Wno-deprecated
#DEFINES = -D_MSC_VER -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE

##########################

COMPILE=$(CXX) $(CXXFLAGS) $(DEFINES)
LINK=$(CXX)

UNRAR_OBJ=filestr.o recvol.o rs.o scantree.o

OBJECTS=rar.o strlist.o strfn.o pathfn.o int64.o
savepos.o global.o \
           file.o filefn.o filcreat.o archive.o
arcread.o unicode.o \
    system.o isnt.o crypt.o crc.o rawread.o encname.o
\
    resource.o match.o timefn.o rdwrfn.o consio.o
options.o \
    ulinks.o errhnd.o rarvm.o rijndael.o getbits.o
sha1.o \
    extinfo.o extract.o volume.o list.o find.o
unpack.o cmddata.o

.cpp.o:
    $(COMPILE) -D$(WHAT) -c -g $<

all:    unrar

clean:
    @rm -f *.o *.bak *~

unrar:    WHAT=UNRAR
unrar:    $(OBJECTS) $(UNRAR_OBJ)
    @rm -f makeunrar
    $(LINK) -Wl,-s -g -o unrar $(LDFLAGS) $(OBJECTS)
$(UNRAR_OBJ) $(LIBS)   

sfx:    WHAT=SFX_MODULE
sfx:    $(OBJECTS)
    @rm -f default.sfx
    $(LINK) -Wl,-s -g -o default.sfx $(LDFLAGS)
$(OBJECTS) -DSFX_MODULE


The make utility output:

g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rar.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
strlist.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
strfn.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
pathfn.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
int64.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
savepos.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
global.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
file.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
filefn.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
filcreat.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
archive.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
arcread.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
unicode.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
system.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
isnt.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
crypt.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
crc.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rawread.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
encname.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
resource.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
match.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
timefn.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rdwrfn.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
consio.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
options.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
ulinks.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
errhnd.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rarvm.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rijndael.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
getbits.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
sha1.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
extinfo.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
extract.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
volume.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
list.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
find.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
unpack.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
cmddata.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
filestr.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
recvol.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
rs.cpp
g++ -O2 -Wno-deprecated -g  -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -DLITTLE_ENDIAN -DUNRAR -c -g
scantree.cpp
g++ -Wl,-s -g -o unrar  rar.o strlist.o strfn.o
pathfn.o int64.o savepos.o global.o file.o filefn.o
filcreat.o archive.o arcread.o unicode.o system.o
isnt.o crypt.o crc.o rawread.o encname.o resource.o
match.o timefn.o rdwrfn.o consio.o options.o ulinks.o
errhnd.o rarvm.o rijndael.o getbits.o sha1.o extinfo.o
extract.o volume.o list.o find.o unpack.o cmddata.o
filestr.o recvol.o rs.o scantree.o    



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