46b93b9d22
* Implement memory profiler, optimize memory usage, modify code indent * Implement memory.grow and limit heap space base offset to 1G; modify iwasm build type to Release and 64 bit by default * Add a new extension library: connection * Fix bug of reading magic number and version in big endian platform * Re-org platform APIs: move most platform APIs from iwasm to shared-lib * Enhance wasm loader to fix some security issues * Fix issue about illegal load of EXC_RETURN into PC on stm32 board * Updates that let a restricted version of the interpreter run in SGX * Enable native/app address validation and conversion for wasm app * Remove wasm_application_exectue_* APIs from wasm_export.h which makes confused * Refine binary size and fix several minor issues Optimize interpreter LOAD/STORE opcodes to decrease the binary size Fix issues when using iwasm library: _bh_log undefined, bh_memory.h not found Remove unused _stdin/_stdout/_stderr global variables resolve in libc wrapper Add macros of global heap size, stack size, heap size for Zephyr main.c Clear compile warning of wasm_application.c * Add more strict security checks for libc wrapper API's * Use one libc wrapper copy for sgx and other platforms; remove bh_printf macro for other platform header files * Enhance security of libc strcpy/sprintf wrapper function * Fix issue of call native for x86_64/arm/mips, add module inst parameter for native wrapper functions * Remove get_module_inst() and fix issue of call native * Refine wgl lib: remove module_inst parameter from widget functions; move function index check to runtime instantiate * Refine interpreter call native process, refine memory boudary check * Fix issues of invokeNative function of arm/mips/general version * Add a switch to build simple sample without gui support * Add BUILD_TARGET setting in makefile to replace cpu compiler flags in source code * Re-org shared lib header files, remove unused info; fix compile issues of vxworks * Add build target general * Remove unused files * Update license header * test push * Restore file * Sync up with internal/feature * Sync up with internal/feature * Rename build_wamr_app to build_wasm_app * Fix small issues of README * Enhance malformed wasm file checking Fix issue of print hex int and implement utf8 string check Fix wasi file read/write right issue Fix minor issue of build wasm app doc * Sync up with internal/feature * Sync up with internal/feature: fix interpreter arm issue, fix read leb issue * Sync up with internal/feature * Fix bug of config.h and rename wasi config.h to ssp_config.h * Sync up with internal/feature * Import wamr aot * update document * update document * Update document, disable WASI in 32bit * update document * remove files * update document * Update document * update document * update document * update samples * Sync up with internal repo
3.7 KiB
Use clang compiler
The recommended method to build a WASM binary is to use clang compiler clang-8. You can refer to apt.llvm.org for the detailed instructions. Here are referenced steps to install clang-8 in Ubuntu 16.04 and Ubuntu 18.04.
(1) Add source to your system source list from llvm website
For Ubuntu 16.04, add the following lines to /etc/apt/sources.list:
deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial main
deb-src http://apt.llvm.org/xenial/ llvm-toolchain-xenial main
# 8
deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main
deb-src http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main
# 9
deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main
deb-src http://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main
For Ubuntu 18.04, add the following lines to /etc/apt/sources.list:
# i386 not available
deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic main
deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic main
# 8
deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-8 main
deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-8 main
# 9
deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main
deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main
(2) Download and install clang-8 tool-chain using following commands:
sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
# Fingerprint: 6084 F3CF 814B 57C1 CF12 EFD5 15CF 4D18 AF4F 7421
sudo apt-get update
sudo apt-get install llvm-8 lld-8 clang-8
(3) Create a soft link under /usr/bin:
cd /usr/bin
sudo ln -s wasm-ld-8 wasm-ld
(4) Use the clang-8 command below to build the WASM C source code into the WASM binary.
clang-8 --target=wasm32 -O3 \
-z stack-size=4096 -Wl,--initial-memory=65536 \
-Wl,--allow-undefined,--export=main \
-Wl,--strip-all,--no-entry -nostdlib \
-o test.wasm test.c
You will get test.wasm which is the WASM app binary.
Use Emscripten tool
The last method to build a WASM binary is to use Emscripten tool emcc.
Assuming you are using Linux, you may install emcc from Emscripten EMSDK following the steps below:
git clone https://github.com/emscripten-core/emsdk.git
cd emsdk
./emsdk install latest-fastcomp
./emsdk activate latest-fastcomp
The Emscripten website provides other installation methods beyond Linux.
Use the emcc command below to build the WASM C source code into the WASM binary.
cd emsdk
source emsdk_env.sh (or add it to ~/.bashrc if you don't want to run it each time)
cd <dir of test.c>
EMCC_ONLY_FORCED_STDLIBS=1 emcc -g -O3 -s WASM=1 -s ERROR_ON_UNDEFINED_SYMBOLS=0 \
-s TOTAL_MEMORY=65536 -s TOTAL_STACK=4096 \
-s ASSERTIONS=1 -s STACK_OVERFLOW_CHECK=2 \
-s "EXPORTED_FUNCTIONS=['_main']" -o test.wasm test.c
You will get test.wasm which is the WASM app binary.
Using Docker
Another method availble is using Docker. We assume you've already configured Docker (see Platform section above) and have a running interactive shell. Currently the Dockerfile only supports compiling apps with clang, with Emscripten planned for the future.
Use the clang-8 command below to build the WASM C source code into the WASM binary.
clang-8 --target=wasm32 -O3 \
-z stack-size=4096 -Wl,--initial-memory=65536 \
-Wl,--allow-undefined,--export=main \
-Wl,--strip-all,--no-entry -nostdlib \
-o test.wasm test.c
You will get test.wasm which is the WASM app binary.