Performing C SOURCE FILE Test BROTLI_EMSCRIPTEN failed with the following output:
Change Dir: /home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make -f Makefile cmTC_66e5c/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp'
/usr/bin/make  -f CMakeFiles/cmTC_66e5c.dir/build.make CMakeFiles/cmTC_66e5c.dir/build
make[2]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_66e5c.dir/src.c.o
/home/buildroot/autobuild/instance-3/output-1/host/bin/arceb-buildroot-linux-uclibc-gcc --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arceb-buildroot-linux-uclibc/sysroot -DBROTLI_EMSCRIPTEN  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O3 -g2  -static   -DNDEBUG -o CMakeFiles/cmTC_66e5c.dir/src.c.o -c /home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp/src.c
Linking C executable cmTC_66e5c
/home/buildroot/autobuild/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_66e5c.dir/link.txt --verbose=1
/home/buildroot/autobuild/instance-3/output-1/host/bin/arceb-buildroot-linux-uclibc-gcc --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arceb-buildroot-linux-uclibc/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O3 -g2  -static   -DNDEBUG -static  CMakeFiles/cmTC_66e5c.dir/src.c.o -o cmTC_66e5c 
/home/buildroot/autobuild/instance-3/output-1/host/lib/gcc/arceb-buildroot-linux-uclibc/10.2.0/../../../../arceb-buildroot-linux-uclibc/bin/ld: /home/buildroot/autobuild/instance-3/output-1/host/arceb-buildroot-linux-uclibc/sysroot/usr/lib/crt1.o: in function `__start':
/home/buildroot/autobuild/instance-3/output-1/build/uclibc-1.0.42/libc/sysdeps/linux/arc/crt1.S:49: undefined reference to `main'
/home/buildroot/autobuild/instance-3/output-1/host/lib/gcc/arceb-buildroot-linux-uclibc/10.2.0/../../../../arceb-buildroot-linux-uclibc/bin/ld: /home/buildroot/autobuild/instance-3/output-1/build/uclibc-1.0.42/libc/sysdeps/linux/arc/crt1.S:49: undefined reference to `main'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_66e5c.dir/build.make:98: recipe for target 'cmTC_66e5c' failed
make[2]: *** [cmTC_66e5c] Error 1
make[2]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp'
Makefile:127: recipe for target 'cmTC_66e5c/fast' failed
make[1]: *** [cmTC_66e5c/fast] Error 2
make[1]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/brotli-1.0.9/CMakeFiles/CMakeTmp'


Source file was:
#if defined(__EMSCRIPTEN__)
   int main() {return 0;}
   #endif