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From: "Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via djgpp-workers AT delorie DOT com]" <djgpp-workers AT delorie DOT com>
Subject: Missing functions in DJGPP libc (and/or) libm
Message-ID: <91b82d66-c1a2-180b-0f3d-1d2cadd03287@iki.fi>
Date: Sun, 12 Apr 2020 22:32:59 +0300
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Reply-To: djgpp-workers AT delorie DOT com

Tried to build current gcc master branch (2020-04-12) with DJGPP related changes. Maybe there are 
other problems but at least libgfortran doesnot build due to missing functions:

$ grep implicit\  xx | grep error
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:84:28: error: implicit 
declaration of function 'fmaf' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:84:28: error: implicit 
declaration of function 'fma' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:55:56: error: implicit 
declaration of function 'copysignl' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:57:46: error: implicit 
declaration of function 'fabsl' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:84:28: error: implicit 
declaration of function 'fmal' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:76:45: error: implicit 
declaration of function 'cosl' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:75:45: error: implicit 
declaration of function 'sinl' [-Werror=implicit-function-declaration]
../../../gnu/gcc-10.01-20200412/libgfortran/intrinsics/trigd_lib.inc:77:45: error: implicit 
declaration of function 'tanl' [-Werror=implicit-function-declaration]


I suspect that we may have more and more such problems in future.

I only tried to build cross-compiler.

Andris