X-Authentication-Warning: delorie.com: mail set sender to djgpp-workers-bounces using -f X-Recipient: djgpp-workers AT delorie DOT com X-Authority-Analysis: v=2.3 cv=ecemg4MH c=1 sm=1 tr=0 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=IkcTkHD0fZMA:10 a=Mj1Xp5F7AAAA:8 a=b4LDLZbEAAAA:8 a=CCpqsmhAAAAA:8 a=fjDFcf429ns8VtWUCqQA:9 a=QEXdDO2ut3YA:10 a=ihfjKnFrczMA:10 a=OCttjWrK5_uSHO_3Hkg-:22 a=20T61YgZp4ItGotXEy2O:22 a=ul9cdbp4aOFLsgKbc677:22 Subject: Re: Missing functions in DJGPP libc (and/or) libm References: <4aed4e35-34a2-56ba-582a-c9c6ccae6699 AT iki DOT fi> To: djgpp-workers From: Brian Inglis Autocrypt: addr=Brian DOT Inglis AT SystematicSw DOT ab DOT ca; prefer-encrypt=mutual; keydata= mDMEXopx8xYJKwYBBAHaRw8BAQdAnCK0qv/xwUCCZQoA9BHRYpstERrspfT0NkUWQVuoePa0 LkJyaWFuIEluZ2xpcyA8QnJpYW4uSW5nbGlzQFN5c3RlbWF0aWNTdy5hYi5jYT6IlgQTFggA PhYhBMM5/lbU970GBS2bZB62lxu92I8YBQJeinHzAhsDBQkJZgGABQsJCAcCBhUKCQgLAgQW AgMBAh4BAheAAAoJEB62lxu92I8Y0ioBAI8xrggNxziAVmr+Xm6nnyjoujMqWcq3oEhlYGAO WacZAQDFtdDx2koSVSoOmfaOyRTbIWSf9/Cjai29060fsmdsDLg4BF6KcfMSCisGAQQBl1UB BQEBB0Awv8kHI2PaEgViDqzbnoe8B9KMHoBZLS92HdC7ZPh8HQMBCAeIfgQYFggAJhYhBMM5 /lbU970GBS2bZB62lxu92I8YBQJeinHzAhsMBQkJZgGAAAoJEB62lxu92I8YZwUBAJw/74rF IyaSsGI7ewCdCy88Lce/kdwX7zGwid+f8NZ3AQC/ezTFFi5obXnyMxZJN464nPXiggtT9gN5 RSyTY8X+AQ== Organization: Systematic Software Message-ID: <128ba9e6-0dc8-4617-00ee-216732fa0ff3@SystematicSw.ab.ca> Date: Mon, 13 Apr 2020 12:18:13 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-CA Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfJRQ0ye9QDxYRZUdMr1ytrATrk1c8sKUO+gjJCnpoVCWls5w74Nd0K5eNGSdxnszWoD0ZQqbHh7DfggGpj36rjT9Rm4rVHZN8tNsgbIVL4KhxyYBBCnr qufysabqEle2kVbmte5yVFJI2vKm6gj0CIaLsy52bw62yxvZKte1vUJ+ropXlIT6Mv7xuL3xJKwFzw== Reply-To: djgpp-workers AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: djgpp-workers AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On 2020-04-13 03:38, Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via djgpp-workers AT delorie DOT com] wrote: > On 4/13/20 7:25 AM, Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via > djgpp-workers AT delorie DOT com] wrote: >> On 4/12/20 10:56 PM, DJ Delorie wrote: >>> Looks like C99 support is required now, and our library is C89(ish). >>> >>> If someone wants to put in the effort: >>> http://www.open-std.org/jtc1/sc22/WG14/www/docs/n1256.pdf >>> >>> Else we might have to accept that some parts of djgpp have reached >>> end-of-life :-( >> >> How it is handled in CygWin. It seems to have newlib which do not have these >> functions (at least I did not easily find them browsing GIT repon tree). >> >> It is unlikely that CygWin will not support Fortran for gcc-10 >> > At least Mingw does not seem to be affected. I'm able tro build current GCC > master branch for Mingw as cross-compiler from Linux (Arch Linux, took some time > to get MAKEPKG file ready especially if each build lasts some time even on Ryzen > 9 3950X) > > At least fma(|fl) stuff we could borrow from Mingw libm (license notice on the > top of file seems to allow that) > > The problem with missing libm functions will however be a problem for Newlib > targets. Checked one embedded target I have to deal at work at Finnish > Meteorological institute it also do not have these functions. Of course no > native compiler there. I also have not build cross-compiler for it myself. Ported to Cygwin from Mingw64: https://sourceware.org/legacy-ml/cygwin-cvs/2016-q1/msg00198.html https://sourceware.org/git/?p=newlib-cygwin.git;a=tree;f=winsup/cygwin/math but newlib supports long double functions only for LDBL_EQ_DBL ports: https://sourceware.org/git/?p=newlib-cygwin.git;a=tree;f=newlib/libm/common -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised.