On Thu, May 28, 2009 at 06:18:56PM -0500, Leslie Rhorer wrote: > > > I downloaded an application (mfs-tools) which I am trying to compile on > > my > > > Debian "Lenny" system, but the make is failing with the following > > errors: > > > > > > gcc -DHAVE_CONFIG_H -I. -I../include -I../include -g -O2 -MT > > > readwrite.o -MD -MP -MF .deps/readwrite.Tpo -c -o readwrite.o > > readwrite.c > > > readwrite.c: In function 'tivo_partition_read': > > > readwrite.c:146: error: 'off64_t' undeclared (first use in this > > function) > > > readwrite.c:146: error: (Each undeclared identifier is reported only > > once > > > readwrite.c:146: error: for each function it appears in.) > > > readwrite.c:146: error: expected ')' before 'sector' > > > readwrite.c:146: error: expected ')' before 'sector' > > > readwrite.c: In function 'tivo_partition_write': > > > readwrite.c:261: error: 'off64_t' undeclared (first use in this > > function) > > > readwrite.c:261: error: expected ')' before 'sector' > > > readwrite.c:261: error: expected ')' before 'sector' > > > make[1]: *** [readwrite.o] Error 1 > > > make[1]: Leaving directory `/downloads/software/mfstools-src/lib' > > > make: *** [all-recursive] Error 1 > > > > > > I've searched for the error, and I found some background information, > > but no > > > clear suggestions on how to resolve the issue. I submitted the issue to > > > some Usenet groups, and one of the respondents suggested I report the > > issue > > > here. Clearly, the off64_t type is not defined in any of the headers. > > I > > > have glibc-source installed, and it looks to me like the type may be > > > defined there, but the make is not seeing it. > > > > On amd64 off_t and all the others are naturally 64bit. And for 32bit > > code you should rather enable LFS so off_t is 64bit instead of using > > off64_t (adding -D_FILE_OFFSET_BITS=64). > > I'm sorry, but I don't quite follow your meaning. Are you saying I should > replace all references to off_64t with off_t in readwrite.c? And I should > add -D_FILE_OFFSET_BITS=64 to what file?
off64_t does exist. You need to do define _LARGEFILE64_SOURCE (or _GNU_SOURCE), so something like: #define _LARGEFILE64_SOURCE 1 #include <sys/types.h> Instead of using a define in the source, you can also use tell it to the compiler using gcc -D_LARGEFILE64_SOURCE=1 Instead of using off64_t, you could also use off_t and add the output of 'getconf LFS_CFLAGS' to the gcc command line. If you're using a Makefile, that would need to be added to the CFLAGS. getconf LFS_CFLAGS will output something like something like "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" on arches that need it. It will not change anything on amd64 since it's already 64 bit. Do not just always add those, it will break on some arches. If _FILE_OFFSET_BITS is defined, off_t will be replaced by an off64_t. If _LARGEFILE64_SOURCE is defined the off64_t type will be available. So what most applications want to do is use off_t and use getconf LFS_CFLAGS. Kurt -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
