#import <Foundation/Foundation.h>
#import "TestExample.h"

int main(){
    NSLog(@"testApp----");
    TestExample *manager = [TestExample new];
    [manager lg_test: nil];
    return 0;
}

#import <Foundation/Foundation.h>

@interface TestExample : NSObject

- (void)lg_test:(_Nullable id)e;

@end

#import "TestExample.h"

@implementation TestExample

- (void)lg_test:(_Nullable id)e {
    NSLog(@"TestExample----");
}
@end

echo "编译test.m --- test.o"
clang -target x86_64-apple-macos12.1 \
-fobjc-arc \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk \
-I./dylib \
-c test.m -o test.o

pushd ./dylib

echo "编译TestExample.m --- TestExample.o"
clang -target x86_64-apple-macos12.1 \
-fobjc-arc \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk \
-c TestExample.m -o TestExample.o

echo "编译TestExample.o --- libTestExample.dylib"
clang -dynamiclib \ # 链接成动态库
-target x86_64-apple-macos12.1 \
-fobjc-arc \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk \
TestExample.o -o libTestExample.dylib

popd

echo "链接libTestExample.dylib -- test EXEC"

clang -target x86_64-apple-macos12.1 \
-fobjc-arc \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk \
-L./dylib \
-lTestExample \
test.o -o test

├── build.sh
├── dylib
│   ├── TestExample.h
│   └── TestExample.m
└── test.m