From 92b3c2dcff3e85ad3d455f6ab845d9a97d3b525b Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Mon, 7 Dec 2020 12:22:15 +0200
Subject: Rewrite meson build scripts into cmakelists

---
 cmake/CompilerWarnings.cmake | 77 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 cmake/CompilerWarnings.cmake

(limited to 'cmake/CompilerWarnings.cmake')

diff --git a/cmake/CompilerWarnings.cmake b/cmake/CompilerWarnings.cmake
new file mode 100644
index 0000000..c53660f
--- /dev/null
+++ b/cmake/CompilerWarnings.cmake
@@ -0,0 +1,77 @@
+# Based on:
+# https://github.com/lefticus/cpp_starter_project/blob/master/cmake/CompilerWarnings.cmake
+# https://github.com/lefticus/cppbestpractices/blob/master/02-Use_the_Tools_Available.md
+
+function(enable_warnings)
+  # only enable warnings for debug builds
+  if(NOT ${CMAKE_BUILD_TYPE} STREQUAL "Debug")
+    return()
+  endif()
+
+  set(MSVC_WARNINGS
+      /W4 # Baseline reasonable warnings
+      /w14242 # 'identifier': conversion from 'type1' to 'type1', possible loss of data
+      /w14254 # 'operator': conversion from 'type1:field_bits' to 'type2:field_bits', possible loss of data
+      /w14263 # 'function': member function does not override any base class virtual member function
+      /w14265 # 'classname': class has virtual functions, but destructor is not virtual instances of this class may not
+              # be destructed correctly
+      /w14287 # 'operator': unsigned/negative constant mismatch
+      /we4289 # nonstandard extension used: 'variable': loop control variable declared in the for-loop is used outside
+              # the for-loop scope
+      /w14296 # 'operator': expression is always 'boolean_value'
+      /w14311 # 'variable': pointer truncation from 'type1' to 'type2'
+      /w14545 # expression before comma evaluates to a function which is missing an argument list
+      /w14546 # function call before comma missing argument list
+      /w14547 # 'operator': operator before comma has no effect; expected operator with side-effect
+      /w14549 # 'operator': operator before comma has no effect; did you intend 'operator'?
+      /w14555 # expression has no effect; expected expression with side- effect
+      /w14619 # pragma warning: there is no warning number 'number'
+      /w14640 # Enable warning on thread un-safe static member initialization
+      /w14826 # Conversion from 'type1' to 'type_2' is sign-extended. This may cause unexpected runtime behavior.
+      /w14905 # wide string literal cast to 'LPSTR'
+      /w14906 # string literal cast to 'LPWSTR'
+      /w14928 # illegal copy-initialization; more than one user-defined conversion has been implicitly applied
+      /permissive- # standards conformance mode for MSVC compiler.
+  )
+
+  set(BASE_WARNINGS
+      -Wall # reasonable and standard
+      -Wextra
+      -Werror=pedantic # warn if non-standard C++ is used
+
+      -Wunused # warn on anything being unused
+      -Wshadow # warn the user if a variable declaration shadows one from a parent context
+
+      -Wnon-virtual-dtor # warn the user if a class with virtual functions has a non-virtual destructor.
+                         # This helps catch hard to track down memory errors
+      -Werror=redundant-decls
+      -Woverloaded-virtual # warn if you overload (not override) a virtual function
+      -Werror=return-type
+
+      -Wold-style-cast # warn for c-style casts
+      -Wcast-align # warn for potential performance problem casts
+      -Wconversion # warn on type conversions that may lose data
+      -Wsign-conversion # warn on sign conversions
+      -Wnull-dereference # warn if a null dereference is detected
+      -Wdouble-promotion # warn if float is implicit promoted to double
+      -Wformat=2 # warn on security issues around functions that format output (ie printf)
+
+      -Wconsumed
+      #-Wlifetime
+      -mspeculative-load-hardening   # Spectre v1 mitigation
+
+      -Wmisleading-indentation # warn if indentation implies blocks where blocks do not exist
+      #-Wduplicated-cond # warn if if / else chain has duplicated conditions
+      #-Wduplicated-branches # warn if if / else branches have duplicated code
+      #-Wlogical-op # warn about logical operations being used where bitwise were probably wanted
+      #-Wuseless-cast # warn if you perform a cast to the same type
+  )
+
+  if(MSVC)
+    add_compile_options(${MSVC_WARNINGS})
+    message(STATUS "added ${MSVC_WARNINGS}")
+  else()
+    add_compile_options(${BASE_WARNINGS})
+    message(STATUS "added ${BASE_WARNINGS}")
+  endif()
+endfunction()
-- 
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