lib/msun: export arch-specific fenv methods

[kib]

Summary

Reported by:    fluffy
Fixes:  3a01e1e1a50cb9a9594aac2148dc920a6b295428

[kib]

Remove conditional include of the arch symbol map. All arches provide it, after the patch.

[kib]

Provide actual implementation for fegetenv, feenableexcept, fedisableexcept on aarch64.

[fluffy]

Typo?

--- flt_rounds.pico ---
In file included from /opt/poudriere/jails/16c/usr/src/lib/libc/aarch64/gen/flt_rounds.c:29:
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.h:97:1: error: expected identifier or '('
   97 | {
      | ^
1 error generated.
*** [flt_rounds.pico] Error code 1

make[4]: stopped making "all" in /opt/poudriere/jails/16c/usr/src/lib/libc

lib/msun/aarch64/fenv.h

97 ↗

(On Diff #174993)

Typo?

--- flt_rounds.pico ---
In file included from /opt/poudriere/jails/16c/usr/src/lib/libc/aarch64/gen/flt_rounds.c:29:
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.h:97:1: error: expected identifier or '('
   97 | {
      | ^
1 error generated.
*** [flt_rounds.pico] Error code 1

make[4]: stopped making "all" in /opt/poudriere/jails/16c/usr/src/lib/libc

[fluffy]

--- lib/msun__L ---
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.c:103:2: error: redefinition of 'fegetenv'
  103 | (fegetenv)(fenv_t *envp)
      |  ^
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.c:79:2: note: previous definition is here
   79 | (fegetenv)(fenv_t *envp)
      |  ^
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.c:111:31: error: incompatible pointer to integer conversion passing 'fenv_t *' (aka 'unsigned long *') to parameter of type 'int' [-Wint-conversion]
  111 |         return (__feenableexcept_int(envp));
      |                                      ^~~~
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.h:241:26: note: passing argument to parameter '__mask' here
  241 | __feenableexcept_int(int __mask)
      |                          ^
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.c:117:32: error: incompatible pointer to integer conversion passing 'fenv_t *' (aka 'unsigned long *') to parameter of type 'int' [-Wint-conversion]
  117 |         return (__fedisableexcept_int(envp));
      |                                       ^~~~
/opt/poudriere/jails/16c/usr/src/lib/msun/aarch64/fenv.h:252:27: note: passing argument to parameter '__mask' here
  252 | __fedisableexcept_int(int __mask)
      |                           ^
3 errors generated.

[kib]

The version that builds with TARGET=arm64

[fluffy]

now jail build fine, symbols presented in libm.so.5, try to build math consumers

[fluffy]

Confirmed: it works for aarch64, finally.

math/py-numpy1
math/Imath
devel/boost-python-libs
builds fine now

devel/llvm20 (+flang)
still building and not failed yet

[kib]

Pass tinderbox.

[fluffy]

Just reminder: stable/15 is affected too

[kib]

Ping? I want to fix this regression. If no feedback is provided, I plan to commit the change tomorrow.

[kib]

Dimitry, I am sorry, just committed a second before your approval.