On Wed, 1 Jul 2026 18:43:40 +0200 Roland Mainz via Cygwin <[email protected]> wrote: > Hi! > > ---- > > Is anyone else seeing this build failure: > ---- snip --- > $ uname -a > CYGWIN_NT-10.0-19045 bloodbath039 3.6.9-1.x86_64 2026-04-21 15:46 UTC > x86_64 Cygwin > $ git clone -b cygwin-3_6-branch git://cygwin.com/git/newlib-cygwin.git > $ cd newlib-cygwin/winsup/ > $ ./autogen.sh > $ cd ../.. > $ mkdir testinstall && cd testinstall/ > $ /home/roland_mainz/work/cygwin/newlib-cygwin/winsup/configure > --prefix=/home/roland_mainz/work/cygwin/testinstall > ... > $ time nice make > Making all in cygwin > make[1]: Entering directory > '/home/roland_mainz/work/cygwin/testinstall/cygwin' > make all-am > make[2]: Entering directory > '/home/roland_mainz/work/cygwin/testinstall/cygwin' > CC math/truncl.o > /home/roland_mainz/work/cygwin/newlib-cygwin/winsup/cygwin/math/truncl.c: > In function ‘truncl’: > /home/roland_mainz/work/cygwin/newlib-cygwin/winsup/cygwin/math/truncl.c:24:15: > error: ‘FE_TOWARDZERO’ undeclared (first use in this function) > 24 | | (FE_TOWARDZERO << FE_CW_ROUND_SHIFT); > | ^~~~~~~~~~~~~ > /home/roland_mainz/work/cygwin/newlib-cygwin/winsup/cygwin/math/truncl.c:24:15: > note: each undeclared identifier is reported only once for each > function it appears in > make[2]: *** [Makefile:2076: math/truncl.o] Error 1 > make[2]: Leaving directory '/home/roland_mainz/work/cygwin/testinstall/cygwin' > make[1]: *** [Makefile:1199: all] Error 2 > make[1]: Leaving directory '/home/roland_mainz/work/cygwin/testinstall/cygwin' > make: *** [Makefile:398: all-recursive] Error 1 > ---- snip ---- > > This happens on "cygwin-3_6-branch" and the Cygwin default (3.7.0) branch... >
Did you run configure? https://www.cygwin.com/faq/faq.html#faq.programming.building-cygwin -- Takashi Yano <[email protected]> -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple

