Building binaryen with zig cc

README.markdown

Building binaryen with zig cc

1. Add zigcc, zigc++ scripts because cmake doens't accept a compiler with spaces in the name like "zig cc".
2. The zigcc/zigc++ scripts can also add a target for cross-compiling as shown here.
3. Disable threads (perhaps cmake cross-compiling needs to be set up?).
4. Use a static build (otherwise cmake emits a .so - again, do we need cmake cross-compiling here?).
5. ninja stalls on the final links: it just hangs. To solve that, run ninja wasm-opt and so forth manually, as a specific build target works.

binaryen.diff

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e3f3f87a4..bb2fc6607 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -94,21 +94,21 @@ function(binaryen_setup_rpath name)
   endif()
 
   set_target_properties(${name} PROPERTIES
                         BUILD_WITH_INSTALL_RPATH On
                         INSTALL_RPATH "${_install_rpath}"
                         ${_install_name_dir})
 endfunction()
 
 # Options
 
-option(BUILD_STATIC_LIB "Build as a static library" OFF)
+option(BUILD_STATIC_LIB "Build as a static library" ON)
 if(MSVC)
   # We don't have dllexport declarations set up for windows yet.
   set(BUILD_STATIC_LIB ON)
 endif()
 
 # For now, don't include full DWARF support in JS builds, for size.
 if(NOT EMSCRIPTEN)
   option(BUILD_LLVM_DWARF "Enable full DWARF support" ON)
 
   if(BUILD_LLVM_DWARF)
@@ -201,23 +201,22 @@ if(MSVC)
 
   add_link_flag("/STACK:8388608")
 
   if(RUN_STATIC_ANALYZER)
     add_definitions(/analyze)
   endif()
 else()
 
   option(ENABLE_WERROR "Enable -Werror" ON)
 
-  set(THREADS_PREFER_PTHREAD_FLAG ON)
-  set(CMAKE_THREAD_PREFER_PTHREAD ON)
-  find_package(Threads REQUIRED)
+  set(THREADS_PREFER_PTHREAD_FLAG OFF)
+  set(CMAKE_THREAD_PREFER_PTHREAD OFF)
   add_cxx_flag("-std=c++${CXX_STANDARD}")
   if(NOT EMSCRIPTEN)
     if(CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
       # wasm doesn't allow for x87 floating point math
       add_compile_flag("-msse2")
       add_compile_flag("-mfpmath=sse")
     elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^armv[2-6]" AND NOT CMAKE_CXX_FLAGS MATCHES "-mfpu=")
       add_compile_flag("-mfpu=vfpv3")
     endif()
   endif()
@@ -312,28 +311,23 @@ if(BUILD_LLVM_DWARF)
   SET(binaryen_objs ${binaryen_objs} $<TARGET_OBJECTS:llvm_dwarf>)
 endif()
 
 # Sources.
 
 file(GLOB binaryen_HEADERS src/*.h)
 set(binaryen_SOURCES
   src/binaryen-c.cpp
   ${binaryen_HEADERS}
 )
-if(BUILD_STATIC_LIB)
 message(STATUS "Building libbinaryen as statically linked library.")
 add_library(binaryen STATIC ${binaryen_SOURCES} ${binaryen_objs})
 add_definitions(-DBUILD_STATIC_LIBRARY)
-else()
-  message(STATUS "Building libbinaryen as shared library.")
-  add_library(binaryen SHARED ${binaryen_SOURCES} ${binaryen_objs})
-endif()
 if(NOT (BUILD_STATIC_LIB AND BYN_INSTALL_TOOLS_ONLY))
   install(TARGETS binaryen
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
 endif()
 if(NOT BYN_INSTALL_TOOLS_ONLY)
   install(FILES src/binaryen-c.h src/wasm-delegations.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 endif()
 

wasm-as

wasm-ctor-eval

wasm-dis

wasm-emscripten-finalize

wasm-metadce

wasm-opt

wasm-reduce

wasm-shell

wasm-split

zigc++

zigcc