[Darshan-users] Error: symbol `__isoc99_fscanf' is already defined

[Carns, Philip H.]

Thanks for the bug report.  It looks like maybe __isoc99_fscanf() is defined (rather than just declared) in a header on your system.

Can you tell us a little more about your laptop (what OS/version it is, and what version of glibc it is using)?

thank you,
-Phil
________________________________
From: Darshan-users <darshan-users-bounces at lists.mcs.anl.gov> on behalf of François Trahay via Darshan-users <darshan-users at lists.mcs.anl.gov>
Sent: Tuesday, November 12, 2019 6:05 AM
To: darshan-users at lists.mcs.anl.gov <darshan-users at lists.mcs.anl.gov>
Subject: [Darshan-users] Error: symbol `__isoc99_fscanf' is already defined

Hi,

I'm having problems compiling Darshan on my laptop running Debian buster
with MPICH-3.3.

Here's how I compile:

$ git clone https://xgitlab.cels.anl.gov/darshan/darshan.git

$ cd darshan/darshan-runtime

$ ./configure --prefix=$PWD/install CC=mpicc --with-mem-align=8
--with-log-path=/tmp/log_darshan --with-jobid-env=NONE

$ make

[...]

mpicc -DDARSHAN_CONFIG_H=\"darshan-runtime-config.h\" -I . -I. -I./../
-g -O2  -D_LARGEFILE64_SOURCE -shared -fpic -DPIC -DDARSHAN_PRELOAD -c
lib/darshan-stdio.c -o lib/darshan-stdio.po
/tmp/cc6UpHUi.s: Assembler messages:
/tmp/cc6UpHUi.s:7769: Error: symbol `__isoc99_fscanf' is already defined
make: *** [Makefile:143: lib/darshan-stdio.po] Error 1


The preprocessed file (darshan-stdio.c)  is attached. The problem is
probably due to line 585 (in the preprocessed source code) :

extern int fscanf (FILE *__restrict __stream, const char *__restrict
__format, ...) __asm__ ("" "__isoc99_fscanf")

If I comment this line, the compilation succeeds.


François

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