GCC 14: m68k, sh, and sparc64

[Joel Sherrill]

On Sun, Apr 28, 2024 at 6:17 AM Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> Hello,
>
> the m68k, sh, and sparc64 build fails with GCC 14 due to:
>

Two of those are scheduled to be removed after we branch 6.

So only the m68k really matters. More below.

>
> make "CC_FOR_BUILD=gcc" "CFLAGS=-g -O2  -m4-single-only" "CCASFLAGS=-g
> -O2  -m4-single-only" "CFLAGS_FOR_BUILD=" "CFLAGS_FOR_TARGET="
> "INSTALL=/usr/bin/install -c" "LDFLAGS=-m4-single-only"
> "LIBCFLAGS=-m4-single-only" "LIBCFLAGS_FOR_TARGET=" "MAKE=make"
> "MAKEINFO=makeinfo --split-size=5000000    " "PICFLAG="
> "PICFLAG_FOR_TARGET=" "SHELL=/bin/sh" "EXPECT=expect" "RUNTEST=runtest"
> "RUNTESTFLAGS=" "exec_prefix=/tmp/sh/i-sh-rtems6"
> "infodir=/tmp/sh/i-sh-rtems6/share/info"
> "libdir=/tmp/sh/i-sh-rtems6/lib" "prefix=/tmp/sh/i-sh-rtems6"
> "tooldir=/tmp/sh/i-sh-rtems6/sh-rtems6"
> "top_toollibdir=/tmp/sh/i-sh-rtems6/sh-rtems6/lib/m4-single-only"
> "AR=/tmp/sh/i-sh-rtems6/sh-rtems6/bin/ar" "AS=as"
> "CC=/tmp/sh/b-gcc-sh-rtems6/./gcc/xgcc -B/tmp/sh/b-gcc-sh-rtems6/./gcc/
> -nostdinc -B/tmp/sh/b-gcc-sh-rtems6/sh-rtems6/m4-single-only/newlib/
> -isystem
> /tmp/sh/b-gcc-sh-rtems6/sh-rtems6/m4-single-only/newlib/targ-include
> -isystem /home/EB/sebastian_h/src/gcc/newlib/libc/include
> -B/tmp/sh/i-sh-rtems6/sh-rtems6/bin/
> -B/tmp/sh/i-sh-rtems6/sh-rtems6/lib/ -isystem
> /tmp/sh/i-sh-rtems6/sh-rtems6/include -isystem
> /tmp/sh/i-sh-rtems6/sh-rtems6/sys-include  -m4-single-only" "LD=ld"
> "LIBCFLAGS=-m4-single-only" "NM=" "PICFLAG="
> "RANLIB=/tmp/sh/i-sh-rtems6/sh-rtems6/bin/ranlib" "DESTDIR=" all-am
> make[4]: Entering directory
> '/tmp/sh/b-gcc-sh-rtems6/sh-rtems6/m4-single-only/newlib'
>    CC       libm/complex/libm_a-ccoshl.o
> /home/EB/sebastian_h/src/gcc/newlib/libm/complex/ccoshl.c: In function
> 'ccoshl':
> /home/EB/sebastian_h/src/gcc/newlib/libm/complex/ccoshl.c:43:13: error:
> implicit declaration of function 'coshl'; did you mean 'coshf'?
> [-Wimplicit-function-declaration]
>     43 |         w = coshl(x) * cosl(y) + (sinhl(x) * sinl(y)) * I;
>        |             ^~~~~
>        |             coshf
> /home/EB/sebastian_h/src/gcc/newlib/libm/complex/ccoshl.c:43:24: error:
> implicit declaration of function 'cosl'; did you mean 'cosf'?
> [-Wimplicit-function-declaration]
>     43 |         w = coshl(x) * cosl(y) + (sinhl(x) * sinl(y)) * I;
>        |                        ^~~~
>        |                        cosf
> /home/EB/sebastian_h/src/gcc/newlib/libm/complex/ccoshl.c:43:35: error:
> implicit declaration of function 'sinhl'; did you mean 'sinhf'?
> [-Wimplicit-function-declaration]
>     43 |         w = coshl(x) * cosl(y) + (sinhl(x) * sinl(y)) * I;
>        |                                   ^~~~~
>        |                                   sinhf
> /home/EB/sebastian_h/src/gcc/newlib/libm/complex/ccoshl.c:43:46: error:
> implicit declaration of function 'sinl'; did you mean 'sinf'?
> [-Wimplicit-function-declaration]
>     43 |         w = coshl(x) * cosl(y) + (sinhl(x) * sinl(y)) * I;
>        |                                              ^~~~
>        |                                              sinf
> make[4]: *** [Makefile:43178: libm/complex/libm_a-ccoshl.o] Error 1
>
> Implicit function declarations are an error by default in GCC 14. Joel,
> could you please have a look at the long double support in Newlib since
> you worked with it some time ago.
>

Looks like a file that probably should be disabled on targets without
long double support. I'll try to dig into it.

Please file an RSB issue once we get to gitlab. I think that's where these
type of issues go now since it is gcc.

>
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