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mercury/README.AIX
Peter Wang 55c31d81a2 Update information about AIX support.
README.AIX:
NEWS:
    As above.
2019-06-06 16:01:37 +10:00

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Mercury was tested on AIX in 2019.
* AIX 7.1 on POWER9 processor
* using gcc version 6.3.0
* in high-level C grades (hlc.gc, hlc.par.gc)
PREREQUISITES
Install yum by running this script:
https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/ezinstall/ppc/yum.sh
Then install the necessary packages:
yum install gcc make flex bison
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BUILDING WITH GCC
GCC defaults to -maix32. To build for the 64-bit AIX ABI, it may be easiest to
create a shell script containing:
exec gcc -maix64 "$@"
Mark the script executable, then run configure like this:
CC=/path/to/gcc-maix64 ./configure [options]
If you are using /usr/bin/ar then you must also set an environment variable:
export OBJECT_MODE=64
If you try to use GNU ar instead (from binutils) you will run into problems
when /usr/bin/ranlib is invoked on archives created by GNU ar.
The mercury_compile executable will overflow the PowerPC TOC with gcc in its
default configuration. One solution is to add this to Mmake.params before
running make:
EXTRA_CFLAGS=-mminimal-toc
Your own programs may also overflow the TOC, depending on their size.
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BUILDING WITH IBM XL C COMPILER
(Last tested in 2014.)
To use the IBM C compiler, pass "--with-cc=xlc" when configuring Mercury
installation. Use high-level C grades for better performance.
Large programs will overflow the TOC. You can try passing the option
`-qpic=large' to the C compiler and the linker, or passing `-bbigtoc' to the
linker.
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