Determining if the futimes exist failed with the following output: Change Dir: /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp Run Build Command(s):/home/autobuild/make/make -f Makefile cmTC_09790/fast && make[1]: Entering directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' /home/autobuild/make/make -f CMakeFiles/cmTC_09790.dir/build.make CMakeFiles/cmTC_09790.dir/build make[2]: Entering directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_09790.dir/CheckSymbolExists.c.o /home/autobuild/autobuild/instance-2/output-1/host/bin/arm-buildroot-uclinux-uclibcgnueabi-gcc --sysroot=/home/autobuild/autobuild/instance-2/output-1/host/arm-buildroot-uclinux-uclibcgnueabi/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O3 -g0 -Wl,-elf2flt=-r -static -D_DEFAULT_SOURCE -DNDEBUG -o CMakeFiles/cmTC_09790.dir/CheckSymbolExists.c.o -c /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main': /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: 'futimes' undeclared (first use in this function); did you mean 'lutimes'? 8 | return ((int*)(&futimes))[argc]; | ^~~~~~~ | lutimes /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in make[2]: *** [CMakeFiles/cmTC_09790.dir/build.make:78: CMakeFiles/cmTC_09790.dir/CheckSymbolExists.c.o] Error 1 make[2]: Leaving directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:127: cmTC_09790/fast] Error 2 make[1]: Leaving directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' File /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c: /* */ #include int main(int argc, char** argv) { (void)argv; #ifndef futimes return ((int*)(&futimes))[argc]; #else (void)argc; return 0; #endif } Determining if the posix_madvise exist failed with the following output: Change Dir: /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp Run Build Command(s):/home/autobuild/make/make -f Makefile cmTC_af1a9/fast && make[1]: Entering directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' /home/autobuild/make/make -f CMakeFiles/cmTC_af1a9.dir/build.make CMakeFiles/cmTC_af1a9.dir/build make[2]: Entering directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_af1a9.dir/CheckSymbolExists.c.o /home/autobuild/autobuild/instance-2/output-1/host/bin/arm-buildroot-uclinux-uclibcgnueabi-gcc --sysroot=/home/autobuild/autobuild/instance-2/output-1/host/arm-buildroot-uclinux-uclibcgnueabi/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O3 -g0 -Wl,-elf2flt=-r -static -D_DEFAULT_SOURCE -DNDEBUG -o CMakeFiles/cmTC_af1a9.dir/CheckSymbolExists.c.o -c /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main': /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: 'posix_madvise' undeclared (first use in this function) 8 | return ((int*)(&posix_madvise))[argc]; | ^~~~~~~~~~~~~ /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in make[2]: *** [CMakeFiles/cmTC_af1a9.dir/build.make:78: CMakeFiles/cmTC_af1a9.dir/CheckSymbolExists.c.o] Error 1 make[2]: Leaving directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:127: cmTC_af1a9/fast] Error 2 make[1]: Leaving directory '/home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp' File /home/autobuild/autobuild/instance-2/output-1/build/libdeflate-1.15/CMakeFiles/CMakeTmp/CheckSymbolExists.c: /* */ #include int main(int argc, char** argv) { (void)argv; #ifndef posix_madvise return ((int*)(&posix_madvise))[argc]; #else (void)argc; return 0; #endif }