Help learning how to interface with c(++)

[Kai Meyer]

On 03/05/2011 06:24 AM, Kagamin wrote:
> Kai Meyer Wrote:
>
>> I can't seem to get this to work right:
>>
>> gcc -m32 -shared -fPIC Test.cpp -o libTest.so
>> g++ -m32 test_c.cpp -L. -lTest -o test_c
>> wine htod.exe Test.h Test.d
>> dmd test_d.d Test.d -L-L. -L-lTest -oftest_d
>> test_d.o: In function `_Dmain':
>> Test.d:(.text._Dmain+0x20): undefined reference to `increment'
>> collect2: ld returned 1 exit status
>> --- errorlevel 1
>> make: *** [test_d] Error 1
>>
>> The resulting test_c binary from g++ works as intented (With either
>> LD_LIBRARY_PATH="." or LD_RUN_PATH="."):
>> $ ./test_c
>> Count = 0
>> Count = 1
>> $ ldd test_c
>> 	linux-gate.so.1 =>   (0x00ad1000)
>> 	libTest.so (0x005b9000)
>
> try non-shared libTest, dmd prefers single executable compilations.

Is that the only option? I know it's possible to link to external c 
libraries, and I'd like to learn how.