problem: using -errwarn on non-Sun systems
#4699
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solution: only use `-errwarn` on SunPro systems For example, using Clang on Alpine, this just results in build spam, and the option is incorrectly passed through to ld, which trys to use use it (`-e`) as an entrypoint, i.e: ```bash [ 28%] Building CXX object CMakeFiles/local_lat.dir/perf/local_lat.cpp.o clang++: warning: -e rrwarn=%all: 'linker' input unused [-Wunused-command-line-argument] [ 29%] Linking CXX executable bin/local_lat /usr/bin/ld: warning: cannot find entry symbol rrwarn=%all; defaulting to 0000000000000cf0 [ 29%] Built target local_lat ```
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solution: only use
-errwarnon SunPro systemsFor example, using Clang on Alpine, this just results in build spam, and the option is incorrectly passed through to
ld, which trys to use it (-e) as an entrypoint, i.e: