mDNSResponder and GCC 4.1 compiling issues

I have found an issue with compiling mDNSResponder-107.6 (and probably
older versions) with GCC 4.1. This will bite you if you are using Ubuntu Edgy or another gcc-4.1 based-distro.

In short, you’ll get this error message:

cc dns-sd.c -L../mDNSPosix/build/prod/ -ldns_sd -I../mDNSShared -o build/dns-sd
/usr/bin/ld: build/dns-sd: hidden symbol `__stack_chk_fail_local'
in /usr/lib/libc_nonshared.a(stack_chk_fail_local.oS) is referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output

The solution is below…Here is the full output of the compile command you should see:

jpollak@moya:/tmp/mDNSResponder-107.6/mDNSPosix$ make os=linux
Responder daemon done
Client library done
make[1]: Entering directory `/tmp/mDNSResponder-107.6/Clients'
cc dns-sd.c -L../mDNSPosix/build/prod/ -ldns_sd -I../mDNSShared -o build/dns-sd /usr/bin/ld: build/dns-sd: hidden symbol __stack_chk_fail_local'
in /usr/lib/libc_nonshared.a(stack_chk_fail_local.oS) is referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make[1]: *** [build/dns-sd] Error 1
make[1]: Leaving directory `/tmp/mDNSResponder-107.6/Clients'
make: *** [../Clients/build/dns-sd] Error 2

Solution:

Edit mDNSResponder-107.6/mDNSPosix/Makefile, and find line 271:

LD = ld -shared

and change it to:

LD = gcc -shared

Now when you build, everything works:

jpollak@moya:/tmp/mDNSResponder-107.6/mDNSPosix$ make os=linux clean
make[1]: Entering directory `/tmp/mDNSResponder-107.6/Clients'
rm -rf build
make[1]: Leaving directory `/tmp/mDNSResponder-107.6/Clients'
jpollak@moya:/tmp/mDNSResponder-107.6/mDNSPosix$ make os=linux
Responder daemon done
Client library done
make[1]: Entering directory `/tmp/mDNSResponder-107.6/Clients'
mkdir build
cc dns-sd.c -L../mDNSPosix/build/prod/ -ldns_sd -I../mDNSShared -o
build/dns-sd
make[1]: Leaving directory `/tmp/mDNSResponder-107.6/Clients'
Clients done
Embedded Standalone Client done
Embedded Standalone Responder done
Embedded Standalone ProxyResponder done
Identify done
NetMonitor done
dnsextd done
Name Service Switch module done

To give credit where credit is due, I found the solution here