[Plptools-developers] [ plptools-Bugs-3081337 ] plpfuse fails to build on Linux x86_64

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Bugs item #3081337, was opened at 2010-10-05 09:18
Message generated for change (Comment added) made by rrt
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https://sourceforge.net/tracker/?func=detail&atid=108797&aid=3081337&group_id=8797

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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Philip Pemberton (philpem)
Assigned to: Nobody/Anonymous (nobody)
Summary: plpfuse fails to build on Linux x86_64

Initial Comment:
When building plptools on a 64-bit Linux system, configure fails to find libfuse:

checking fuse.h usability... no
checking fuse.h presence... no
checking for fuse.h... no
checking for fuse_new in -lfuse... yes
checking for supported FUSE API version... no

The configure log shines a little more light on this:

configure:19897: checking fuse.h usability
configure:19897: gcc -c -g -O2 -Wall -W -Wmissing-prototypes -Wstrict-prototypes -pedantic  conftest.c >&5
In file included from /usr/include/fuse/fuse.h:26,
                 from /usr/include/fuse.h:9,
                 from conftest.c:135:
/usr/include/fuse/fuse_common.h:32: error: #error Please add -D_FILE_OFFSET_BITS=64 to your compile flags!
configure:19897: $? = 1


If you attempt to build plpfuse regardless, the same error occurs:

make: Entering directory `/home/philpem/psion/plptools/plptools-1.0.10/plpfuse'
g++ -DHAVE_CONFIG_H -I. -I.. -I../lib    -g -O2 -MT main.o -MD -MP -MF .deps/main.Tpo -c -o main.o main.cc
In file included from /usr/include/fuse/fuse.h:26,
                 from /usr/include/fuse.h:9,
                 from plpfuse.h:8,
                 from rfsv_api.h:30,
                 from main.cc:46:
/usr/include/fuse/fuse_common.h:32: error: #error Please add -D_FILE_OFFSET_BITS=64 to your compile flags!


-- Workaround --
The configure script isn't using the right CFLAGS on x86_64. This patch works around the bug, though it may not be the right way to do it:

--- configure.ac	2010-06-24 11:14:07.000000000 +0100
+++ ../plptools-1.0.10-mod/configure.ac	2010-10-04 23:37:04.000000000 +0100
@@ -27,8 +27,10 @@
 [
 if test $enableval = yes; then
         CFLAGS="-g"
+        CXXFLAGS="-g"
         if test "$GCC" = "yes"; then
           CFLAGS="$CFLAGS -ggdb"
+          CXXFLAGS="$CXXFLAGS -ggdb"
         fi
         AC_MSG_RESULT(yes)
         AC_DEFINE(DEBUG, 1, [Define this to include debugging code.])
@@ -42,6 +44,7 @@
 dnl Turn on additional compiler warnings
 if test "$GCC" = "yes"; then
   CFLAGS="$CFLAGS -Wall -W -Wmissing-prototypes -Wstrict-prototypes -pedantic"
+  CXXFLAGS="$CXXFLAGS -Wall -W -Wmissing-prototypes -Wstrict-prototypes -pedantic"
 fi
 
 dnl NLS support
@@ -108,6 +111,8 @@
 AC_SUBST(LIBHISTORY)
 
 # FUSE for plpfuse
+CFLAGS="$CFLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
+CXXFLAGS="$CXXFLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
 enable_fuse=yes
 AC_CHECK_HEADER(fuse.h,, enable_fuse=no)
 AC_CHECK_LIB(fuse,fuse_new, [true], enable_fuse=no)


----------------------------------------------------------------------

>Comment By: Reuben Thomas (rrt)
Date: 2010-10-05 15:34

Message:
I'd be grateful if you could test the new version, 1.0.11, before release;
either check out current CVS, or give me an email address to which I can
send a tarball.

----------------------------------------------------------------------

Comment By: Reuben Thomas (rrt)
Date: 2010-10-05 15:02

Message:
This looks to me like a bug in FUSE. From the glibc documentation:

"On 64 bit systems this macro has no effect"

On 32-bit systems, the configure script causes the macro to be defined,
since it is needed for large file support (LFS). On 64-bit systems, where
the various file calls are identical with the 32-bit versions (at least, on
a 64-bit system with 64-bit libraries), this macro is not needed.

Unfortunately, this argument has already been had on the FUSE mailing list
and there seem to be no plans to fix this bug. However, if I use pkg-config
to detect FUSE, this macro will be correctly set, and since this simplifies
the detection logic for FUSE considerably, I will do it.

You can work around this by defining _FILE_OFFSET_BITS in your ./configure
command line.

----------------------------------------------------------------------

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