Add travis and small cleanups

.travis.yml

@@ -0,0 +1,68 @@
+language: cpp
+
+dist: trusty
+addons:
+  apt:
+    sources:
+    - george-edison55-precise-backports # For cmake
+    - llvm-toolchain-precise-3.6
+    - llvm-toolchain-trusty-6.0
+    - llvm-toolchain-trusty-7
+    - llvm-toolchain-trusty-8
+    - ubuntu-toolchain-r-test
+    packages:
+    - bison
+    - binutils
+    - binutils-gold
+    - build-essential
+    - cmake
+    - flex
+    # All the compilers!
+    - g++-4.9
+    - gcc-4.9
+    - g++-5
+    - gcc-5
+    - g++-6
+    - gcc-6
+    - g++-8
+    - gcc-8
+    - g++-9
+    - gcc-9
+    - clang-3.6
+    - clang-6.0
+    - clang-8
+
+script:
+  - eval $MATRIX_EVAL
+  - make
+
+jobs:
+  include:
+    - stage: Build
+      name: "GCC 5 (Ubuntu Xenial - 16.04)"
+      env:
+         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
+    - stage: Build
+      name: "GCC 6 (Debian Stretch)"
+      env:
+         - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+    - stage: Build
+      name: "GCC 8 (Ubuntu Latest)"
+      env:
+         - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
+    - stage: Build
+      name: "GCC 9 (Latest Release)"
+      env:
+         - MATRIX_EVAL="CC=gcc-9 && CXX=g++-9"
+    - stage: Build
+      name: "clang-3.6 (Earliest supported)"
+      env:
+         - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6"
+    - stage: Build
+      name: "clang-6.0 (Debian + Ubuntu common)"
+      env:
+         - MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0"
+    - stage: Build
+      name: "clang-8 (Latest Release)"
+      env:
+         - MATRIX_EVAL="CC=clang-8 && CXX=clang++-8"

CMakeLists.txt

@@ -7,8 +7,8 @@ project("libsdcparse")
 if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
     #Only set compiler settings if we are not a sub-project
     set(WARN_FLAGS "-Wall -Wextra -Wpedantic -Wcast-qual -Wcast-align -Wshadow -Wformat=2 -Wlogical-op -Wmissing-declarations -Wmissing-include-dirs -Wredundant-decls -Wswitch-default -Wundef -Wunused-variable -Wdisabled-optimization -Wnoexcept -Woverloaded-virtual -Wctor-dtor-privacy -Wnon-virtual-dtor")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++11 ${WARN_FLAGS}") 
-    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize=leak -fsanitize=undefined") 
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++11 ${WARN_FLAGS}")
+    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize=leak -fsanitize=undefined")
     set(FLEX_BISON_WARN_SUPPRESS_FLAGS "-Wno-switch-default -Wno-unused-parameter -Wno-missing-declarations")
 endif()
 
@@ -40,11 +40,28 @@ if(FLEX_BISON_WARN_SUPPRESS_FLAGS)
                                 PROPERTIES COMPILE_FLAGS ${FLEX_BISON_WARN_SUPPRESS_FLAGS})
 endif()
 
+# Grammars generated by Bison 3.0.4 and below emit a null pointer dereference warning
+# when compiled with GCC 7
+include(CheckCXXCompilerFlag)
+check_cxx_compiler_flag(-Werror=null-dereference NULL_DEREFERENCE)
+if (${NULL_DEREFERENCE} AND ${BISON_VERSION} VERSION_LESS 3.0.5)
+    get_source_file_property(BISON_COMPILE_FLAGS ${BISON_SdcParser_OUTPUT_SOURCE} COMPILE_FLAGS)
+    set_source_files_properties(${BISON_SdcParser_OUTPUT_SOURCE}
+                                PROPERTIES COMPILE_FLAGS ${BISON_COMILE_FLAGS} -Wno-error=null-dereference)
+endif()
+
+check_cxx_compiler_flag(-Wswitch-default SWITCH_DEFAULT)
+if (${SWITCH_DEFAULT})
+    get_source_file_property(BISON_COMPILE_FLAGS ${BISON_SdcParser_OUTPUT_SOURCE} COMPILE_FLAGS)
+    set_source_files_properties(${BISON_SdcParser_OUTPUT_SOURCE}
+                                PROPERTIES COMPILE_FLAGS ${BISON_COMILE_FLAGS} -Wno-switch-default)
+endif()
+
 #Create the library
 add_library(libsdcparse STATIC
              ${LIB_HEADERS}
              ${LIB_SOURCES}
-             ${FLEX_SdcLexer_OUTPUTS} 
+             ${FLEX_SdcLexer_OUTPUTS}
              ${BISON_SdcParser_OUTPUT_SOURCE})
 target_include_directories(libsdcparse PUBLIC ${LIB_INCLUDE_DIRS} ${CMAKE_CURRENT_BINARY_DIR})
 set_target_properties(libsdcparse PROPERTIES PREFIX "") #Avoid extra 'lib' prefix

Makefile

@@ -0,0 +1,14 @@
+NUM_PROC=$(shell nproc)
+
+SOURCE_DIR := $(PWD)
+BUILD_DIR ?= build
+
+.PHONY: all clean $(MAKECMDGOALS)
+
+${BUILD_DIR}/Makefile:
+	mkdir -p ${BUILD_DIR}
+	cd ${BUILD_DIR} && cmake ${SOURCE_DIR}
+
+all $(MAKECMDGOALS): $(BUILD_DIR)/Makefile
+	$(MAKE) -k -j${NUM_PROC} -C $(BUILD_DIR) $(MAKECMDGOALS) \
+		|| $(MAKE) -j1 -C $(BUILD_DIR) $(MAKECMDGOALS)