Re: Unresolved symbol for fprintf

[Aaron Brashears]

On 2007 Jan 5, at 14:06, Paul Querna wrote:

Aaron Brashears wrote:

I am having a problem using apr with gcc 4.0.1 on mac osx. When I



         U _fprintf$LDBLStub


When linking my application, xcode reports that it cannot find that
symbol and the link fails. So, I switched gcc to 3.3 and rebuilt apr.
Looking at the symbols in getopt.o, it exports:

         U _fprintf

It seems unusual that gcc 4.0 would generate a symbol which it cannot
link to later. The application I am building is using xcode, gcc 4.0,
and linking to the standard c libraries shipped with it including the
10.3.9 compatibility libraries.

I would like to build apr with gcc 4.0. Does anyone know how to
accomplish this?

compile apr-1.2.8, getopt.o contains this reference in the symbol table:

It works great for me on 10.4... And I don't remember ever seeing that
problem on 10.3.

Is this with the latest xcode 2.4.1?

On my 10.4.8, the dylib shows fprintf like it should:
         U _fprintf

-Paul

The configure we use is:

./configure --disable-shared --disable-lfs









Digging deeper, this is defined in /usr/include/sys/cdefs.h as:

#if defined(__ppc__)
#  if defined(__LDBL_MANT_DIG__) && defined(__DBL_MANT_DIG__) && \
        __LDBL_MANT_DIG__ > __DBL_MANT_DIG__
#    if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 < 1040
#      define   __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBLStub")
...


Further investigation turned up this technical note from Apple:

http://developer.apple.com/technotes/tn2005/tn2137.html

So, when building on ppc osx, I tried using the command:




Sadly, this causes configure to fail:

checking uuid/uuid.h usability... no
checking uuid/uuid.h presence... yes
configure: WARNING: uuid/uuid.h: present but cannot be compiled

configure: WARNING: uuid/uuid.h: see the Autoconf documentation

configure: WARNING:     ## ------------------------------------------ ##
configure: WARNING:     ## Report this to the AC_PACKAGE_NAME lists.  ##
configure: WARNING:     ## ------------------------------------------ ##

and then misc/rand.c fails to compile on an attempt to include uuid.h.


misc/unix/rand.c:41:23: error: uuid/uuid.h: No such file or directory
make[1]: *** [misc/unix/rand.lo] Error 1
make: *** [all-recursive] Error 1

so we are only looking at the static apr lib. This is on 10.4.8 with xcode 2.4.1 with gcc 4.0.1 build 5367. We are not using xcoode to build apr, since the configure/make path is simple enough. I dug through the system header files and found this in /usr/include/ stdio.h: int fprintf(FILE * __restrict, const char * __restrict, ...) __DARWIN_LDBL_COMPAT(fprintf); CFLAGS="-isysroot /Developer/SDKs/MacOSX10.3.9.sdk" ./configure -- disable-shared --disable-lfs --prefix=/tmp/apr configure: WARNING: uuid/uuid.h: check for missing prerequisite headers? configure: WARNING: uuid/uuid.h: section "Present But Cannot Be Compiled" configure: WARNING: uuid/uuid.h: proceeding with the preprocessor's result configure: WARNING: uuid/uuid.h: in the future, the compiler will take precedence /bin/sh /Users/aaronb/tmp/apr-1.2.8/libtool --silent --mode=compile gcc -isysroot /Developer/SDKs/MacOSX10.3.9.sdk -DHAVE_CONFIG_H - DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK -no-cpp-precomp -I./include - I/Users/aaronb/tmp/apr-1.2.8/include/arch/unix -I./include/arch/unix - I/Users/aaronb/tmp/apr-1.2.8/include -o misc/unix/rand.lo -c misc/ unix/rand.c && touch misc/unix/rand.lo I am at a bit of a loss for how to get this to work. Any further suggestions?

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