On Sun, 30 Mar 2025, Jeremy Drake via Cygwin wrote: > I tried to build cmake 4.0.0 with latest test gcc and cygwin packages, and > got the following error > > /home/WDAGUtilityAccount/cmake-4.0.0/Utilities/cmcurl/lib/rand.c: In > function ‘weak_random’: > /home/WDAGUtilityAccount/cmake-4.0.0/Utilities/cmcurl/lib/rand.c:124:21: > error: implicit declaration of function ‘arc4random’; did you mean > ‘srandom’? [-Wimplicit-function-declaration] > 124 | r = (unsigned int)arc4random(); > | ^~~~~~~~~~ > | srandom > make[2]: *** [Utilities/cmcurl/lib/CMakeFiles/cmcurl.dir/build.make:1423: > Utilities/cmcurl/lib/CMakeFiles/cmcurl.dir/rand.c.o] Error 1 > make[2]: *** Waiting for unfinished jobs....
I kind of think https://github.com/Kitware/CMake/blob/5978c57c20b762a5aeb4b00f31a51a090d670430/Utilities/cmcurl/CMakeLists.txt#L165 should match "^(Linux|Cygwin)$"... Otherwise it doesn't get __BSD_VISIBLE and arc4random is not defined in the header (it looks for arc4random *symbol* on https://github.com/Kitware/CMake/blob/5978c57c20b762a5aeb4b00f31a51a090d670430/Utilities/cmcurl/CMakeLists.txt#L1982 > > CYGWIN_NT-10.0-22621 f6904e59-bb48-4060-bea5-cf49a76e528e > 3.7.0-0.19.g6c5537c0298e.x86_64 2025-03-28 19:43 UTC x86_64 Cygwin > > gcc version 15.0.1 20250223 (experimental) (GCC) > > This was trying to investigate > https://github.com/msys2/msys2-runtime/issues/272 > -- 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
