Invoke ". build/envsetup.sh" from your shell to add the following functions to your environment:
- lunch:      lunch <product_name>-<build_variant>
              Selects <product_name> as the product to build, and <build_variant> as the variant to
              build, and stores those selections in the environment to be read by subsequent
              invocations of 'm' etc.
- tapas:      tapas [<App1> <App2> ...] [arm|x86|arm64|x86_64] [eng|userdebug|user]
              Sets up the build environment for building unbundled apps (APKs).
- banchan:    banchan <module1> [<module2> ...] [arm|x86|arm64|x86_64] [eng|userdebug|user]
              Sets up the build environment for building unbundled modules (APEXes).
- croot:      Changes directory to the top of the tree, or a subdirectory thereof.
- m:          Makes from the top of the tree.
- mm:         Builds and installs all of the modules in the current directory, and their
              dependencies.
- mmm:        Builds and installs all of the modules in the supplied directories, and their
              dependencies.
              To limit the modules being built use the syntax: mmm dir/:target1,target2.
- mma:        Same as 'mm'
- mmma:       Same as 'mmm'
- provision:  Flash device with all required partitions. Options will be passed on to fastboot.
- cgrep:      Greps on all local C/C++ files.
- ggrep:      Greps on all local Gradle files.
- gogrep:     Greps on all local Go files.
- jgrep:      Greps on all local Java files.
- ktgrep:     Greps on all local Kotlin files.
- resgrep:    Greps on all local res/*.xml files.
- mangrep:    Greps on all local AndroidManifest.xml files.
- mgrep:      Greps on all local Makefiles and *.bp files.
- owngrep:    Greps on all local OWNERS files.
- rsgrep:     Greps on all local Rust files.
- sepgrep:    Greps on all local sepolicy files.
- sgrep:      Greps on all local source files.
- godir:      Go to the directory containing a file.
- allmod:     List all modules.
- gomod:      Go to the directory containing a module.
- pathmod:    Get the directory containing a module.
- outmod:     Gets the location of a module's installed outputs with a certain extension.
- dirmods:    Gets the modules defined in a given directory.
- installmod: Adb installs a module's built APK.
- refreshmod: Refresh list of modules for allmod/gomod/pathmod/outmod/installmod.
- syswrite:   Remount partitions (e.g. system.img) as writable, rebooting if necessary.

func init() {
     addStandardProperties(bpparser.StringType,
        map[string]string{
            "LOCAL_MODULE":                  "name",
            "LOCAL_CXX_STL":                 "stl",
            "LOCAL_MULTILIB":                "compile_multilib",
            "LOCAL_ARM_MODE_HACK":           "instruction_set",
            "LOCAL_SDK_VERSION":             "sdk_version",
            "LOCAL_MIN_SDK_VERSION":         "min_sdk_version",
            "LOCAL_NDK_STL_VARIANT":         "stl",
             "LOCAL_JAR_MANIFEST":            "manifest",
             "LOCAL_CERTIFICATE":             "certificate",
             "LOCAL_PACKAGE_NAME":            "name",
             "LOCAL_MODULE_RELATIVE_PATH":    "relative_install_path",
             "LOCAL_PROTOC_OPTIMIZE_TYPE":    "proto.type",
             "LOCAL_MODULE_OWNER":            "owner",
             "LOCAL_RENDERSCRIPT_TARGET_API": "renderscript.target_api",
             "LOCAL_NOTICE_FILE":             "notice",
             "LOCAL_JAVA_LANGUAGE_VERSION":   "java_version",
             "LOCAL_INSTRUMENTATION_FOR":     "instrumentation_for",
             "LOCAL_MANIFEST_FILE":           "manifest",

             "LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING": "dex_preopt.profile",
             "LOCAL_TEST_CONFIG":                      "test_config",
         })
     addStandardProperties(bpparser.ListType,
         map[string]string{
             "LOCAL_SRC_FILES":                     "srcs",
             "LOCAL_SRC_FILES_EXCLUDE":             "exclude_srcs",
             "LOCAL_HEADER_LIBRARIES":              "header_libs",
             "LOCAL_SHARED_LIBRARIES":              "shared_libs",
             "LOCAL_STATIC_LIBRARIES":              "static_libs",
             "LOCAL_WHOLE_STATIC_LIBRARIES":        "whole_static_libs",
             "LOCAL_SYSTEM_SHARED_LIBRARIES":       "system_shared_libs",
             "LOCAL_ASFLAGS":                       "asflags",
             "LOCAL_CLANG_ASFLAGS":                 "clang_asflags",
             "LOCAL_CONLYFLAGS":                    "conlyflags",
             "LOCAL_CPPFLAGS":                      "cppflags",
             "LOCAL_REQUIRED_MODULES":              "required",
             "LOCAL_OVERRIDES_MODULES":             "overrides",
             "LOCAL_LDLIBS":                        "host_ldlibs",
             "LOCAL_CLANG_CFLAGS":                  "clang_cflags",
             "LOCAL_YACCFLAGS":                     "yaccflags",
             "LOCAL_SANITIZE_RECOVER":              "sanitize.recover",
             "LOCAL_LOGTAGS_FILES":                 "logtags",
             "LOCAL_EXPORT_HEADER_LIBRARY_HEADERS": "export_header_lib_headers",
             "LOCAL_EXPORT_SHARED_LIBRARY_HEADERS": "export_shared_lib_headers",
             "LOCAL_EXPORT_STATIC_LIBRARY_HEADERS": "export_static_lib_headers",
             "LOCAL_INIT_RC":                       "init_rc",
             "LOCAL_VINTF_FRAGMENTS":               "vintf_fragments",
             "LOCAL_TIDY_FLAGS":                    "tidy_flags",
             // TODO: This is comma-separated, not space-separated
             "LOCAL_TIDY_CHECKS":           "tidy_checks",
             "LOCAL_RENDERSCRIPT_INCLUDES": "renderscript.include_dirs",
             "LOCAL_RENDERSCRIPT_FLAGS":    "renderscript.flags",

             "LOCAL_JAVA_RESOURCE_DIRS":    "java_resource_dirs",
             "LOCAL_JAVACFLAGS":            "javacflags",
             "LOCAL_ERROR_PRONE_FLAGS":     "errorprone.javacflags",
             "LOCAL_DX_FLAGS":              "dxflags",
             "LOCAL_JAVA_LIBRARIES":        "libs",
             "LOCAL_STATIC_JAVA_LIBRARIES": "static_libs",
             "LOCAL_JNI_SHARED_LIBRARIES":  "jni_libs",
             "LOCAL_AAPT_FLAGS":            "aaptflags",
             "LOCAL_PACKAGE_SPLITS":        "package_splits",
             "LOCAL_COMPATIBILITY_SUITE":   "test_suites",
             "LOCAL_OVERRIDES_PACKAGES":    "overrides",

             "LOCAL_ANNOTATION_PROCESSORS": "plugins",

             "LOCAL_PROGUARD_FLAGS":      "optimize.proguard_flags",
             "LOCAL_PROGUARD_FLAG_FILES": "optimize.proguard_flags_files",

             // These will be rewritten to libs/static_libs by bpfix, after their presence is used to convert
             // java_library_static to android_library.
             "LOCAL_SHARED_ANDROID_LIBRARIES": "android_libs",
             "LOCAL_STATIC_ANDROID_LIBRARIES": "android_static_libs",
             "LOCAL_ADDITIONAL_CERTIFICATES":  "additional_certificates",

             // Jacoco filters:
             "LOCAL_JACK_COVERAGE_INCLUDE_FILTER": "jacoco.include_filter",
             "LOCAL_JACK_COVERAGE_EXCLUDE_FILTER": "jacoco.exclude_filter",
         })

     addStandardProperties(bpparser.BoolType,
         map[string]string{
             // Bool properties
             "LOCAL_IS_HOST_MODULE":             "host",
             "LOCAL_CLANG":                      "clang",
             "LOCAL_FORCE_STATIC_EXECUTABLE":    "static_executable",
             "LOCAL_NATIVE_COVERAGE":            "native_coverage",
             "LOCAL_NO_CRT":                     "nocrt",
             "LOCAL_ALLOW_UNDEFINED_SYMBOLS":    "allow_undefined_symbols",
             "LOCAL_RTTI_FLAG":                  "rtti",
             "LOCAL_NO_STANDARD_LIBRARIES":      "no_standard_libs",
             "LOCAL_PACK_MODULE_RELOCATIONS":    "pack_relocations",
             "LOCAL_TIDY":                       "tidy",
             "LOCAL_USE_CLANG_LLD":              "use_clang_lld",
             "LOCAL_PROPRIETARY_MODULE":         "proprietary",
             "LOCAL_VENDOR_MODULE":              "vendor",
             "LOCAL_ODM_MODULE":                 "device_specific",
             "LOCAL_PRODUCT_MODULE":             "product_specific",
             "LOCAL_PRODUCT_SERVICES_MODULE":    "product_services_specific",
             "LOCAL_EXPORT_PACKAGE_RESOURCES":   "export_package_resources",
             "LOCAL_PRIVILEGED_MODULE":          "privileged",
             "LOCAL_AAPT_INCLUDE_ALL_RESOURCES": "aapt_include_all_resources",
             "LOCAL_USE_EMBEDDED_NATIVE_LIBS":   "use_embedded_native_libs",
             "LOCAL_USE_EMBEDDED_DEX":           "use_embedded_dex",

             "LOCAL_DEX_PREOPT":                  "dex_preopt.enabled",
             "LOCAL_DEX_PREOPT_APP_IMAGE":        "dex_preopt.app_image",
             "LOCAL_DEX_PREOPT_GENERATE_PROFILE": "dex_preopt.profile_guided",

             "LOCAL_PRIVATE_PLATFORM_APIS": "platform_apis",
             "LOCAL_JETIFIER_ENABLED":      "jetifier",
         })
    }

    var moduleTypes = map[string]string{
        "BUILD_SHARED_LIBRARY":        "cc_library_shared",
        "BUILD_STATIC_LIBRARY":        "cc_library_static",
        "BUILD_HOST_SHARED_LIBRARY":   "cc_library_host_shared",
        "BUILD_HOST_STATIC_LIBRARY":   "cc_library_host_static",
        "BUILD_HEADER_LIBRARY":        "cc_library_headers",
        "BUILD_EXECUTABLE":            "cc_binary",
        "BUILD_HOST_EXECUTABLE":       "cc_binary_host",
        "BUILD_NATIVE_TEST":           "cc_test",
        "BUILD_HOST_NATIVE_TEST":      "cc_test_host",
        "BUILD_NATIVE_BENCHMARK":      "cc_benchmark",
        "BUILD_HOST_NATIVE_BENCHMARK": "cc_benchmark_host",

        "BUILD_JAVA_LIBRARY":             "java_library_installable", // will be rewritten to java_library by bpfix
        "BUILD_STATIC_JAVA_LIBRARY":      "java_library",
        "BUILD_HOST_JAVA_LIBRARY":        "java_library_host",
        "BUILD_HOST_DALVIK_JAVA_LIBRARY": "java_library_host_dalvik",
        "BUILD_PACKAGE":                  "android_app",

        "BUILD_CTS_EXECUTABLE":          "cc_binary",               // will be further massaged by bpfix depending on the output path
        "BUILD_CTS_SUPPORT_PACKAGE":     "cts_support_package",     // will be rewritten to android_test by bpfix
        "BUILD_CTS_PACKAGE":             "cts_package",             // will be rewritten to android_test by bpfix
        "BUILD_CTS_TARGET_JAVA_LIBRARY": "cts_target_java_library", // will be rewritten to java_library by bpfix
        "BUILD_CTS_HOST_JAVA_LIBRARY":   "cts_host_java_library",   // will be rewritten to java_library_host by bpfix
    }

    var prebuiltTypes = map[string]string{
        "SHARED_LIBRARIES": "cc_prebuilt_library_shared",
        "STATIC_LIBRARIES": "cc_prebuilt_library_static",
        "EXECUTABLES":      "cc_prebuilt_binary",
        "JAVA_LIBRARIES":   "java_import",
        "ETC":              "prebuilt_etc",
    }

export PKG_CONFIG_PATH=/home/dushicai/ffmpeg_build/lib/pkgconfig:PKG_CONFIG_PATH 

gcc -g -o -O2 main main.c -I.. -L.. -l
gcc -g -o main main.c -Iinclude -Llib -lavutil
gcc -g -o main ./src/main.c "pkg-config --libs libavformat libavutil"

PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig"

./configure \
  --prefix="$HOME/ffmpeg_build" \
  --pkg-config-flags="--static" \
  --extra-cflags="-I$HOME/ffmpeg_build/include" \
  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
  --extra-libs="-lpthread -lm" \
  --ld="g++" \
  --bindir="$HOME/bin" \
  --enable-gpl \
  --enable-gnutls \
  --enable-libass \
  --enable-libfdk-aac \
  --enable-libfreetype \
  --enable-libmp3lame \
  --enable-libopus \
  --enable-libvorbis \
  --enable-libvpx \
  --enable-libx264 \
  --enable-libx265 \
  --enable-nonfree && \
PATH="$HOME/bin:$PATH" make && \
make install && \
hash -r