Source code under `newlib/newlib/newlib/libm/machine/$(ARCH)/*.c`
should be added before common source code from `../../common/*.c`.
Take `newlib/newlib/newlib/libm/machine/riscv/s_fma.c` as an
example:
```
double
fma (double x, double y, double z)
{
double result;
asm ("fmadd.d %0, %1, %2, %3" : "=f" (result) : "f" (x), "f" (y), "f" (z));
return result;
}
```
Note that the common `s_fma.c` will be included by the source file
directly. The order of adding the files to CSRCS matters here.
Although the CMake-based build system does not have the same build
problem of including the a source-file with the same in the wrong
order, this commit also changes the order of inclusion for CMake
too to keep it consistent.
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Disable sincos optimization for all functions in this file,
otherwise gcc would generate infinite calls.
Refer to gcc bug 46926.
-fno-builtin-sin or -fno-builtin-cos can disable sincos optimization,
but these two options do not work inside optimize pragma in-file.
Thus we just enforce -O0 when compiling this file.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
aggresive optimisation can replace occurrences of sinl() and cosl() with
sincosl(), but sincosl() is missing in newlib which causes error. So let's
use custom implementation here.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Fix an issue that math library header files are not exported by make export.
Create symbolic links of libmcs, newlib and openlibm header to nuttx/include.
When we are using newlib as libm, we can consider newlib-esp32 for esp32
hardware. An it contains some optimization for esp32 hardware.
Besides, two small issues has been fixed.
1. add the tar ball to .gitignore
2. Fix the some build warnings
Fix error :
nuttx/libs/libm/newlib/include/math.h:89:8: error: ‘_Thread_local’ does not name a type; did you mean ‘thread_local’?
89 | extern _Thread_local int _tls_gamma_signgam;
| ^~~~~~~~~~~~~
| thread_local
In file included from /mnt/nuttx/include/libcxx/math.h:300,
from /mnt/nuttx/include/libcxx/cmath:308,
from /mnt/nuttx/include/libcxx/charconv:79,
from libcxx/src/string.cpp:10:
/mnt/nuttx/libs/libm/newlib/include/math.h:89:8: error: ‘_Thread_local’ does not name a type; did you mean ‘thread_local’?
89 | extern _Thread_local int _tls_gamma_signgam;
Signed-off-by: yanghuatao <yanghuatao@xiaomi.com>
