/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -fobjc-arc -target x86_64-apple-macosx10.10 -isysroot /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -F /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -g -O0 -DSWIFT_PACKAGE=1 -DDEBUG=1 -fblocks -index-store-path /Users/taketo/Projects/spasm/.build/x86_64-apple-macosx/debug/index/store -fmodules -fmodule-name=spasm -I /Users/taketo/Projects/spasm/src/include -fmodules-cache-path=/Users/taketo/Projects/spasm/.build/x86_64-apple-macosx/debug/ModuleCache -Xpreprocessor -fopenmp -MD -MT dependencies -MF /Users/taketo/Projects/spasm/.build/x86_64-apple-macosx/debug/spasm.build/spasm_util.c.d -c /Users/taketo/Projects/spasm/src/spasm_util.c -o /Users/taketo/Projects/spasm/.build/x86_64-apple-macosx/debug/spasm.build/spasm_util.c.o
ちゃんと -Xpreprocessor -fopenmp は入ってそう (edited)