Fix #33: Configure CMake to build statically linked binary

Author: jonas

Dockerfile

@@ -11,17 +11,13 @@ RUN set -x \
  && apt update \
  && apt install -y --no-install-recommends \
             g++ openjdk-8-jdk-headless sbt cmake make curl git \
+            zlib1g-dev \
             libgc-dev libunwind8-dev libre2-dev \
  && rm -rf /var/lib/apt/lists/*
 
 ARG LLVM_VERSION=6.0
 ENV LLVM_VERSION=$LLVM_VERSION
-# LLVM dev versions do not have a "-x.y" version suffix.
-ARG LLVM_DEB_COMPONENT=-$LLVM_VERSION
 RUN set -x \
- && . /etc/lsb-release \
- && echo "deb https://apt.llvm.org/$DISTRIB_CODENAME/ llvm-toolchain-$DISTRIB_CODENAME$LLVM_DEB_COMPONENT main" > /etc/apt/sources.list.d/llvm.list \
- && apt-key adv --fetch-keys https://apt.llvm.org/llvm-snapshot.gpg.key \
  && apt update \
  && apt install -y --no-install-recommends \
             clang-$LLVM_VERSION clang-format-$LLVM_VERSION \

bindgen/CMakeLists.txt

@@ -1,15 +1,54 @@
 cmake_minimum_required(VERSION 3.9)
 project(scala-native-bindgen)
 
-# Locate $LLVM_PATH/lib/cmake/clang/ClangConfig.cmake
-find_package(Clang REQUIRED CONFIG)
-message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
-message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
+# Locate LLVMConfig.cmake
+#find_package(LLVM REQUIRED CONFIG)
+#message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
+#message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
 
-include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
-add_definitions(${LLVM_DEFINITIONS})
+find_program(LLVM_CONFIG_PROGRAM
+  NAMES
+#  llvm-config-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}
+  llvm-config-6.0
+  llvm-config-5.0
+  llvm-config-4.0
+  llvm-config
+)
+
+execute_process(COMMAND ${LLVM_CONFIG_PROGRAM} --includedir
+  OUTPUT_VARIABLE LLVM_INCLUDE_DIR
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+message(STATUS "Using LLVM include dir: ${LLVM_INCLUDE_DIR}")
+
+execute_process(COMMAND ${LLVM_CONFIG_PROGRAM} --cxxflags
+  OUTPUT_VARIABLE LLVM_CXX_FLAGS
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+message(STATUS "Using LLVM CXXFLAGS: ${LLVM_CXX_FLAGS}")
 
-add_compile_options(-fexceptions -std=c++11 -Wall -Wconversion -Werror)
+execute_process(COMMAND ${LLVM_CONFIG_PROGRAM} --ldflags
+  OUTPUT_VARIABLE LLVM_LINKER_FLAGS
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+message(STATUS "Using LLVM LDFLAGS: ${LLVM_LINKER_FLAGS}")
+
+execute_process(COMMAND ${LLVM_CONFIG_PROGRAM} --libs --link-static
+  OUTPUT_VARIABLE LLVM_LIBS
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+execute_process(COMMAND ${LLVM_CONFIG_PROGRAM} --system-libs --link-static
+  OUTPUT_VARIABLE LLVM_SYSTEM_LIBS
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+include_directories(SYSTEM ${LLVM_INCLUDE_DIR})
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LLVM_CXX_FLAGS}")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LLVM_LINKER_FLAGS} -static")
+
+add_compile_options(-fexceptions -std=c++11 -Wall -Wconversion) # -Werror)
 
 add_executable(bindgen
   Main.cpp
@@ -75,4 +114,21 @@ target_link_libraries(bindgen
   PRIVATE
   clangFrontend
   clangTooling
+
+  clangFrontend
+  clangSerialization
+  clangDriver
+  clangTooling
+  clangParse
+  clangSema
+
+  clangAnalysis
+
+  clangEdit
+  clangAST
+  clangLex
+  clangBasic
+
+  "${LLVM_LIBS}"
+  "${LLVM_SYSTEM_LIBS}"
 )

bindgen/Dockerfile

@@ -11,16 +11,8 @@ RUN set -x \
  && cmake .. \
  && make
 
-ARG UBUNTU_VERSION=18.04
-FROM ubuntu:$UBUNTU_VERSION
-
-ARG LLVM_VERSION=6.0
-ENV LLVM_VERSION=$LLVM_VERSION
-RUN set -x \
- && apt update \
- && apt install -y --no-install-recommends libclang1-$LLVM_VERSION \
- && rm -rf /var/lib/apt/lists/*
+FROM scratch
 
-COPY --from=builder /src/target/scala-native-bindgen /usr/bin/scala-native-bindgen
+COPY --from=builder /src/target/scala-native-bindgen /scala-native-bindgen
 WORKDIR /src
-ENTRYPOINT ["scala-native-bindgen"]
+ENTRYPOINT ["/scala-native-bindgen"]

bindgen/Main.cpp

@@ -2,7 +2,7 @@
 #include "visitor/ScalaFrontendActionFactory.h"
 #include <clang/Tooling/CommonOptionsParser.h>
 
-int main(int argc, char *argv[]) {
+int main(int argc, const char *argv[]) {
     llvm::cl::OptionCategory Category("Binding Generator");
     llvm::cl::extrahelp CommonHelp(
         clang::tooling::CommonOptionsParser::HelpMessage);
@@ -37,7 +37,7 @@ int main(int argc, char *argv[]) {
     llvm::cl::opt<std::string> LinkName(
         "link", llvm::cl::cat(Category),
         llvm::cl::desc("Library to link with, e.g. -luv for libuv"));
-    clang::tooling::CommonOptionsParser op(argc, (const char **)argv, Category);
+    clang::tooling::CommonOptionsParser op(argc, argv, Category);
     clang::tooling::ClangTool Tool(op.getCompilations(),
                                    op.getSourcePathList());