mathlink and gcc problem
- To: mathgroup at smc.vnet.net
- Subject: [mg32154] mathlink and gcc problem
- From: Scott Beckman <scott at kamikaze.lbl.gov>
- Date: Sat, 29 Dec 2001 18:00:34 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello, I'm figure out the basics of linking C code into Mathematica. My system is RedHat Linux 7.2 with Mathematica 4.0.1.0 and gcc-2.96-98 According to the introductory page at wolfram (http://library.wolfram.com/howtos/ccode/) I should be able to link the c program f.c: #include "mathlink.h" int f(int x, int y) { return x+y; } with template file f.tm: :Begin: :Function: f :Pattern: f[x_Integer, y_Integer] :Arguments: {x, y} :ArgumentTypes: {Integer, Integer} :ReturnType: Integer :End: to complile with the command mcc -o f.exe f.tm f.c I believe that I have the libraries in the ld path and everything in place. When I run the mcc command I receive the error: /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crt1.o: In function `_start': /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crt1.o(.text+0x18): undefined reference to `main' collect2: ld returned 1 exit status This seems to be an error because I don't have a main in f.c. If I run gcc f.c I get an identical error, but if I run gcc -c f.c I don't have an error because gcc stops after producing the object files f.o. Now that I have the object file I still cannot use mcc -o f.exe f.tm f.o because I'm given the error from above Is there a way I can use gcc with mcc to build the example file on wolfram's tutorial page? Thank you, Scott Scott Beckman U.C.Berkeley Department of Material Science and Engineering sbeckman at uclink.berkeley.edu