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[UDUNITS #OBJ-198091]: udunits 2.2.26 fails to build against clang 12.0.0

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  • Subject: [UDUNITS #OBJ-198091]: udunits 2.2.26 fails to build against clang 12.0.0
  • Date: Mon, 16 Nov 2020 10:58:15 -0700
Rick,

I don't understand why my clang(1) doesn't have this problem.

I suspect the problem is the default definition of _XOPEN_SOURCE at the top of 
"converter.c". I've modified that to work in your environment, hopefully.

Use this command to get it:

    wget ftp://ftp.unidata.ucar.edu/pub/udunits/beta/udunits-2.2.27.17.tar.gz

> % pwd
> /Users/grubin/test/udunits-2.2.27.15
> 
> % echo $CC $CFLAGS
> clang -fPIC
> % clang --version
> Apple clang version 12.0.0 (clang-1200.0.32.21)
> Target: x86_64-apple-darwin19.6.0
> Thread model: posix
> InstalledDir:
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
> 
> % echo $FC $FCFLAGS
> gfortran -fPIC
> % gfortran --version
> GNU Fortran (Homebrew GCC 10.2.0) 10.2.0
> 
> % ./configure CFLAGS=-std=c99 >configure.log 2>&1
> 
> % make V=Y > make.log 2>&1
> 
> Log files are attached.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: OBJ-198091
Department: Support UDUNITS
Priority: Normal
Status: Closed
===================
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