Updating the Debian package to the current 2.7.1 rc, I noticed that R decides
to use its own bzip2 sources. Looking at configure, I see the test is
essentially a strcmp on '1.0.5' from the version-returning function:
#ifdef HAVE_BZLIB_H
#include <bzlib.h>
#endif
int main() {
char *ver = BZ2_bzlibVersion();
exit(strcmp(ver, "1.0.5") < 0);
}
but unfortunately, bzip2 returns a different string that includes the date:
edd at ron:~/src/debian/R/R-2.7.1.20080621> cat /tmp/bzver.c
#include <bzlib.h>
#include <string.h>
int main() {
const char *ver = BZ2_bzlibVersion();
printf("[%s] strcmp: %d strncmp(5): %d\n", ver, strcmp(ver,
"1.0.5"), strncmp(ver, "1.0.5", 5));
return 0;
}
edd at ron:~/src/debian/R/R-2.7.1.20080621> gcc -Wall -O2 -o /tmp/bzver
/tmp/bzver.c -lbz2
edd at ron:~/src/debian/R/R-2.7.1.20080621> /tmp/bzver
[1.0.5, 10-Dec-2007] strcmp: 1 strncmp(5): 0
Switching to strnmp with a limit of 5 'fixes' the issue but it probably
too
fragile to be generally recommended.
Dirk
--
Three out of two people have difficulties with fractions.
