www.digitalmars.com         C & C++   DMDScript  

D.gnu - undefined references in libgphobos

reply Paul Bittmann <bennily web.de> writes:
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit

Hi

I compiled a crossgcc arm-toolchain with gdc included.
But now, there is a problem, I can't fix.
I tried to compile a simple Hello World programm with arm-linux-gdc, and
it prints some errors. (See attached file). Where could these errors 
come from?


PS: Please excuse my bad english.
Mar 30 2006
parent Thomas Kuehne <thomas-dloop kuehne.cn> writes:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Paul Bittmann schrieb am 2006-03-30:
 I compiled a crossgcc arm-toolchain with gdc included.
 But now, there is a problem, I can't fix.
 I tried to compile a simple Hello World programm with arm-linux-gdc, and
 it prints some errors. (See attached file). Where could these errors 
 come from?

 /crosscompile/arm-dev/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/lib/libgphobos.a(c
nfig.o)(.text+0x4): In function `_D3gcc6config8isfiniteFeZi':
 arm-linux/gcc/config.d:152: undefined reference to `__isfinitel'

correct solution: 1) port d/phobos/std/math.d to your system by adding "version(arm)" and arm specific implementations. 2) port d/phobos/config/* and d/phobos/*.in to Arm dirty solution: 1) open /crosscompile/ ... /include/d/3.4.5/arm-linux/gcc/config.d 2) check the signature type of "__isfinitel": extern(C) int __isfinitel(real); 3) check the the Phobos documentation what that function is supposed to do: "int isfinite(real e); Returns !=0 if e is finite." 4) implement __isfinitel for your system: Endian, size of real... // slow sample // have a look at http://www.digitalmars.com/d/float.html if the code is unclear extern(C) int __isfinitel(real e){ return (e !<>= 0.0) || (e > e.max) || (e < e.min); } 5) append the compiled functions to libgphobos.a with "ar":
 gdc -c isfintel_sample.d -o isfintel_sample.o
 ar q libgphobos.a isfintel_sample.o

Thomas -----BEGIN PGP SIGNATURE----- iD8DBQFELVX43w+/yD4P9tIRAgr6AKCuIFYkX4+McyQb7H9itUKLajo4rQCfbiL/ NPHg7P7uwcr42oh2gSkAmR0= =VGuA -----END PGP SIGNATURE-----
Mar 31 2006