Added CMake/CLion project and associated files

Author: RussellJoyce

.gitignore

@@ -9,7 +9,6 @@ picoc
 build/*
 archives/
 
-CMakeLists.txt
 picoc.plist
 picoc.config
 picoc.creator
@@ -21,4 +20,125 @@ tests/fred.txt
 analysis.txt
 gmon.out
 tests/gmon.out
-.idea/
+
+# Created by https://www.gitignore.io/api/macos,clion
+# Edit at https://www.gitignore.io/?templates=macos,clion
+
+
+### CLion ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### CLion Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+.idea/**/sonarlint/
+
+# SonarQube Plugin
+.idea/**/sonarIssues.xml
+
+# Markdown Navigator plugin
+.idea/**/markdown-navigator.xml
+.idea/**/markdown-navigator/
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# End of https://www.gitignore.io/api/macos,clion

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,45 @@
+cmake_minimum_required(VERSION 3.15)
+project(picoc C)
+
+execute_process(COMMAND git show-ref --abbrev=8 --head --hash head OUTPUT_VARIABLE hash OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(COMMAND git describe --abbrev=0 --tags OUTPUT_VARIABLE tag OUTPUT_STRIP_TRAILING_WHITESPACE)
+message("${tag} ${hash}")
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_COMPILER gcc)
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -pedantic")
+set(CMAKE_REQUIRED_LIBRARIES m readline)
+add_definitions(-DUNIX_HOST -DVER="${hash}" -DTAG="${tag}")
+#add_definitions(-DDEBUG_EXPRESSIONS)
+
+include_directories(.)
+
+add_executable(picoc
+        cstdlib/ctype.c
+        cstdlib/errno.c
+        cstdlib/math.c
+        cstdlib/stdbool.c
+        cstdlib/stdio.c
+        cstdlib/stdlib.c
+        cstdlib/string.c
+        cstdlib/time.c
+        cstdlib/unistd.c
+        platform/library_unix.c
+        platform/platform_unix.c
+        clibrary.c
+        debug.c
+        expression.c
+        heap.c
+        include.c
+        interpreter.h
+        lex.c
+        parse.c
+        picoc.c
+        picoc.h
+        platform.c
+        platform.h
+        table.c
+        type.c
+        variable.c)
+
+target_link_libraries(picoc -lm -lreadline)