GCC 14: m68k, sh, and sparc64

[Joel Sherrill]

On Sun, Apr 28, 2024 at 3:18 PM Joel Sherrill <joel at rtems.org> wrote:

>
>
> 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.
>

I have a build with a gcc version that has this as a warning but duplicates
the underlying issue. I'll see what I can do.

>
> 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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>
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