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Hi Delphine, I just tried to duplicate the problem you reported by running the configure script from netCDF-3.6.2, and it worked fine: ... checking whether the g++ linker (/usr/bin/ld) supports shared libraries... (cached) yes ... checking if Fortran "byte" is C "signed char"... yes I have made the complete output from running configure and "make check" available for you to compare at: http://www.unidata.ucar.edu/software/netcdf/builds/3_6_2/groucho_Darwin_netcdf-3.6.2_gfortran.txt The version of the OS, from running "uname -a", matches what you reported: Darwin groucho.local 8.11.1 Darwin Kernel Version 8.11.1: Wed Oct 10 18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386 i386 i386 The versions of gcc, g++, and /usr/bin/ld were: $ gcc --version i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5367) Copyright (C) 2005 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ g++ --version i686-apple-darwin8-g++-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5367) Copyright (C) 2005 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ /usr/bin/ld -v Apple Computer, Inc. version cctools-622.5.obj~13 It's possible you encountered the error due to older versions of gcc and g++, perhaps from a previous version of XCode (the Apple Development Tools). You should probably have at least version 2.4 of XCode for a recent verion of gcc, g++, etc. You can download XCode updates from http://developer.apple.com/tools/download/ We would be interested in knowing if this is a compiler version problem, so if you can get it working with an update to XCode, please let us know. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: FDV-951529 Department: Support netCDF Priority: Normal Status: Closed