[PATCH] build: Add PROGRAM_PREFIX option

[Sebastian Huber]

On 02.08.23 13:53, Karel Gardas wrote:
> A bit off-topic.
> 
> On 8/2/23 10:39, Sebastian Huber wrote:
>> Yes, but this would be another patch and it is a bit more work since 
>> you have to test the clang support.
> 
> Is building with clang already supported? I'm curious since this is 
> something I'd like to test locally too but neither code nor tickets give 
> me any hope on it. Hence asking directly.

There is some support to build with clang, but I guess this is not 
regularly tested/used. You can test it with:

[riscv/rv64imafdc]
COMPILER = clang

However, this quickly fails with:

[   1/1427] Compiling bsps/shared/dev/serial/mc68681_reg2.c
15:16:15 runner ['/usr/bin/clang', '-MMD', '-Wall', 
'-Wmissing-prototypes', '-Wimplicit-function-declaration', 
'-Wstrict-prototypes', '-Wnested-externs', 
'--target=riscv64-unknown-rtems6', '-march=rv64imafdc', '-mabi=lp64d', 
'-mcmodel=medany', '-O2', '-g', '-fdata-sections', 
'-ffunction-sections', '-Icpukit/include', 
'-I/home/EB/sebastian_h/src/rtems/cpukit/include', 
'-Icpukit/score/cpu/riscv/include', 
'-I/home/EB/sebastian_h/src/rtems/cpukit/score/cpu/riscv/include', 
'-Ibsps/include', '-I/home/EB/sebastian_h/src/rtems/bsps/include', 
'-Ibsps/riscv/include', 
'-I/home/EB/sebastian_h/src/rtems/bsps/riscv/include', 
'-Ibsps/riscv/riscv/include', 
'-I/home/EB/sebastian_h/src/rtems/bsps/riscv/riscv/include', 
'/home/EB/sebastian_h/src/rtems/bsps/shared/dev/serial/mc68681_reg2.c', 
'-c', 
'-o/tmp/sh/b-rtems/riscv/rv64imafdc/bsps/shared/dev/serial/mc68681_reg2.c.1.o', 
'-DHAVE_CONFIG_H=1']
In file included from 
/home/EB/sebastian_h/src/rtems/bsps/shared/dev/serial/mc68681_reg2.c:39:
In file included from 
/home/EB/sebastian_h/src/rtems/bsps/shared/dev/serial/mc68681_reg.c:35:
In file included from 
/home/EB/sebastian_h/src/rtems/cpukit/include/rtems.h:59:
In file included from 
/home/EB/sebastian_h/src/rtems/cpukit/include/rtems/config.h:62:
In file included from 
/home/EB/sebastian_h/src/rtems/cpukit/include/rtems/rtems/config.h:62:
/home/EB/sebastian_h/src/rtems/cpukit/include/rtems/rtems/tasks.h:62:10: 
fatal error: 'sys/cpuset.h' file not found
#include <sys/cpuset.h>
          ^~~~~~~~~~~~~~
1 error generated.

You still need Newlib somehow and also the compiler-rt library for your 
target.

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