* mingw64-* regression: LTO builds fail @ 2015-05-08 23:03 Christian Franke 2015-05-09 20:41 ` JonY 0 siblings, 1 reply; 3+ messages in thread From: Christian Franke @ 2015-05-08 23:03 UTC (permalink / raw) To: cygwin After upgrading to recent mingw64 toolchain, builds with link time optimizer fail during linking. Testcase: $ cat true.c int main() { return 0; } $ cygcheck -f /usr/bin/i686-w64-mingw32-gcc mingw64-i686-gcc-core-4.9.2-1 $ cygcheck -f /usr/bin/i686-w64-mingw32-ld mingw64-i686-binutils-2.25.0.1.23f238d-1 $ i686-w64-mingw32-gcc -flto true.c /tmp/ccukCXyi.ltrans0.ltrans.o:ccukCXyi.ltrans0.o:(.text+0x0): multiple definition of `main' /usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/libmingw32.a(lib32_libmingw32_a-crt0_c.o):/usr/src/debug/mingw64-i686-runtime-4.0.2-1/crt/crt0_c.c:17: first defined here /usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/libmingw32.a(lib32_libmingw32_a-crt0_c.o): In function `main': /usr/src/debug/mingw64-i686-runtime-4.0.2-1/crt/crt0_c.c:18: undefined reference to `WinMain@16' collect2: error: ld returned 1 exit status Same with x86_64 mingw. Downgrading the mingw64 binutils package helps: $ cygcheck -f /usr/bin/i686-w64-mingw32-gcc mingw64-i686-gcc-core-4.9.2-1 $ cygcheck -f /usr/bin/i686-w64-mingw32-ld mingw64-i686-binutils-2.24.0.3.85cf705-1 $ i686-w64-mingw32-gcc -flto true.c May or may not be an upstream issue. The current mingw64 toolchain on Debian jessie (gcc 4.9.1-19+14.3, binutils 2.25-5+5.2) works as expected. Christian -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: mingw64-* regression: LTO builds fail 2015-05-08 23:03 mingw64-* regression: LTO builds fail Christian Franke @ 2015-05-09 20:41 ` JonY 2015-06-01 17:14 ` Christian Franke 0 siblings, 1 reply; 3+ messages in thread From: JonY @ 2015-05-09 20:41 UTC (permalink / raw) To: cygwin [-- Attachment #1: Type: text/plain, Size: 252 bytes --] On 5/9/2015 05:57, Christian Franke wrote: > After upgrading to recent mingw64 toolchain, builds with link time > optimizer fail during linking. > Can you try with the upstream binutils git version? It is most likely a new regression. [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 801 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: mingw64-* regression: LTO builds fail 2015-05-09 20:41 ` JonY @ 2015-06-01 17:14 ` Christian Franke 0 siblings, 0 replies; 3+ messages in thread From: Christian Franke @ 2015-06-01 17:14 UTC (permalink / raw) To: cygwin JonY wrote: > On 5/9/2015 05:57, Christian Franke wrote: >> After upgrading to recent mingw64 toolchain, builds with link time >> optimizer fail during linking. >> > Can you try with the upstream binutils git version? It is most likely a > new regression. Sorry for the delay. Same result with a build from upstream binutils git version bd16da5: $ i686-w64-mingw32-ld --version GNU ld (GNU Binutils) 2.25.51.20150601 $ i686-w64-mingw32-gcc --version i686-w64-mingw32-gcc (GCC) 4.9.2 $ i686-w64-mingw32-gcc -flto true.c /tmp/ccA4vxFb.ltrans0.ltrans.o:ccA4vxFb.ltrans0.o:(.text+0x0): multiple definition of `main' /usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/libmingw32.a(lib32_libmingw32_a-crt0_c.o):/usr/src/debug/mingw64-i686-runtime-4.0.2-1/crt/crt0_c.c:17: first defined here /usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/libmingw32.a(lib32_libmingw32_a-crt0_c.o): In function `main': /usr/src/debug/mingw64-i686-runtime-4.0.2-1/crt/crt0_c.c:18: undefined reference to `WinMain@16' collect2: error: ld returned 1 exit status Downgrading to "prev" package fixes this. $ i686-w64-mingw32-ld --version GNU ld (GNU Binutils) 2.24.51.20140411 Christian -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-06-01 17:14 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-05-08 23:03 mingw64-* regression: LTO builds fail Christian Franke 2015-05-09 20:41 ` JonY 2015-06-01 17:14 ` Christian Franke
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