Things on my mind. George Drapeau's Weblog

Here's something I don't understand: I'm trying to compile the open source program "ffmpeg", useful for transcoding from one kind of movie file and video encoding format to another, plus a whole big bag-o-tricks.

So I download the source code:

svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg

Then I go into the ffmpeg source directory and type "./configure".  It fails, reporting:

check_ld
check_cc
BEGIN /tmp/ffconf.XXRJaOkG.c
    1   #include <signal.h>
    2   static void sighandler(int sig){
    3       raise(SIGTERM);
    4   }
    5   int main(void){
    6       signal(SIGILL, sighandler);
    7       signal(SIGFPE, sighandler);
    8       signal(SIGSEGV, sighandler);
    9   #ifdef SIGBUS
   10       signal(SIGBUS, sighandler);
   11   #endif
   12       {     volatile int i=0;
   13       __asm__ volatile (
   14           "xorl %%ebp, %%ebp"
   15       ::: "%ebp");
   16       return i; }
   17   }
END /tmp/ffconf.XXRJaOkG.c
gcc -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -std=c99
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D__EXTENSIONS__
-fomit-frame-pointer -c -o /tmp/ffconf.XXYJaalG.o
/tmp/ffconf.XXRJaOkG.c
gcc -o /tmp/ffconf.XXTJaWkG /tmp/ffconf.XXYJaalG.o
./configure: line 663: 16530: Terminated

I can't tell why it fails even making a Makefile, but after scanning the web for a while, I find a suggestion that says "use bash as your shell instead of whatever shell you were using."  I had been using tcsh, then tried ksh, then tried sh, all with the same error result.

So then I try "bash configure".  What do you know?  It created a Makefile just fine.

Now why is that?  Can somebody help me out here?  Because I don't know why the choice of a shell would make the configure script succeed or fail.  And that seems bad for the other shells available on OpenSolaris.

The app seems to compile, mostly.  Next: see how much of the app got compiled and how much of it runs.

Why am I doing this?  Because it's part of "pyTiVo", which I'd like to get running on my OpenSolaris home media server, so that I can back up the TiVo's content onto this nice, ZFS-enabled server.  I'll update my progress here.

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