incident de security ou emplois homebrew valide? Quel est ce process cc1?

Sur mon iMac les ventilateurs sont très forts et avec le top j'ai vu que les process nommés cc1 prenaient beaucoup de CPU.

Pouvez-vous m'expliquer ce process? Incident de security?

 > ps -ef | grep cc1 503 38350 38348 0 7:19PM ?? 0:00.32 /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/cc1 -quiet -I . -I . -I ../../.././gcc -I ../../../../libgcc -I ../../../../libgcc/. -I ../../../../libgcc/../gcc -I ../../../../libgcc/../include -imultilib i386 -iprefix /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/gcc/../lib/gcc/6/gcc/x86_64-apple-darwin15.6.0/6.1.0/ -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include-fixed -MD subtf3.d -MF subtf3.dep -MP -MT subtf3.o -D__DYNAMIC__ -D IN_GCC -D IN_LIBGCC2 -D HAVE_CC_TLS -D USE_EMUTLS -D HIDE_EXPORTS -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/include -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/sys-include -isystem ./include ../../../../libgcc/soft-fp/subtf3.c -fPIC -feliminate-unused-debug-symbols -quiet -dumpbase subtf3.c -m32 -mmacosx-version-min=10.11 -mtune=core2 -auxbase-ssortingp subtf3.o -g -g -g -O2 -O2 -O2 -Wextra -Wall -Wno-narrowing -Wwrite-ssortingngs -Wcast-qual -Wssortingct-prototypes -Wold-style-definition -Wno-missing-prototypes -Wno-type-limits -fbuilding-libgcc -fno-stack-protector -fno-common -fvisibility=hidden -o - 503 38358 38356 0 7:19PM ?? 0:00.00 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1as -sortingple i386-apple-macosx10.11.0 -filetype obj -main-file-name - -target-cpu yonah -dwarf-version=2 -fdebug-compilation-dir /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/x86_64-apple-darwin15.6.0/i386/libgcc -dwarf-debug-producer Apple LLVM version 7.3.0 (clang-703.0.31) -mrelocation-model pic -o subtf3.o - 503 38518 38517 0 7:19PM ?? 0:00.02 /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/cc1 -quiet -I . -I . -I ../../.././gcc -I ../../../../libgcc -I ../../../../libgcc/. -I ../../../../libgcc/../gcc -I ../../../../libgcc/../include -imultilib i386 -iprefix /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/gcc/../lib/gcc/6/gcc/x86_64-apple-darwin15.6.0/6.1.0/ -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include-fixed -MD trunctfxf2.d -MF trunctfxf2.dep -MP -MT trunctfxf2.o -D__DYNAMIC__ -D IN_GCC -D IN_LIBGCC2 -D HAVE_CC_TLS -D USE_EMUTLS -D HIDE_EXPORTS -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/include -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/sys-include -isystem ./include ../../../../libgcc/soft-fp/trunctfxf2.c -fPIC -feliminate-unused-debug-symbols -quiet -dumpbase trunctfxf2.c -m32 -mmacosx-version-min=10.11 -mtune=core2 -auxbase-ssortingp trunctfxf2.o -g -g -g -O2 -O2 -O2 -Wextra -Wall -Wno-narrowing -Wwrite-ssortingngs -Wcast-qual -Wssortingct-prototypes -Wold-style-definition -Wno-missing-prototypes -Wno-type-limits -fbuilding-libgcc -fno-stack-protector -fno-common -fvisibility=hidden -o - 503 38519 38516 0 7:19PM ?? 0:00.03 (cc1) 503 38524 38520 0 7:19PM ?? 0:00.02 /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/cc1 -quiet -I . -I . -I ../.././gcc -I ../../../libgcc -I ../../../libgcc/. -I ../../../libgcc/../gcc -I ../../../libgcc/../include -iprefix /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/gcc/../lib/gcc/6/gcc/x86_64-apple-darwin15.6.0/6.1.0/ -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include -isystem /private/tmp/gcc-20160805-32134-1wpoevg/gcc-6.1.0/build/./gcc/include-fixed -MD fixunstfti_s.d -MF fixunstfti_s.dep -MP -MT fixunstfti_s.o -D__DYNAMIC__ -D IN_GCC -D IN_LIBGCC2 -D HAVE_CC_TLS -D USE_EMUTLS -D SHARED -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/include -isystem /usr/local/Cellar/gcc/6.1.0_1/x86_64-apple-darwin15.6.0/sys-include -isystem ./include ../../../libgcc/soft-fp/fixunstfti.c -fPIC -feliminate-unused-debug-symbols -quiet -dumpbase fixunstfti.c -mmacosx-version-min=10.11 -mtune=core2 -auxbase-ssortingp fixunstfti_s.o -g -g -g -O2 -O2 -O2 -Wextra -Wall -Wno-narrowing -Wwrite-ssortingngs -Wcast-qual -Wssortingct-prototypes -Wold-style-definition -Wno-missing-prototypes -Wno-type-limits -fbuilding-libgcc -fno-stack-protector -fno-common -o - 503 38532 12478 0 7:19PM ttys005 0:00.00 grep cc1 

cc1 fait partie de Xcode, c'est le compilateur en fait. L'installation via Homebrew nécessite une compilation, c'est ce qui maintient votre Mac occupé ici.