From 01096167ccd013893f36b9b4317500d27210f13e Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Mon, 24 Dec 2018 18:55:17 +0100
Subject: cmake/toolchain: make mingw-w64 def usable for clang

---
 cmake/mingw-w64.cmake | 83 +++++++++++++++++++++++----------------------------
 1 file changed, 38 insertions(+), 45 deletions(-)

(limited to 'cmake')

diff --git a/cmake/mingw-w64.cmake b/cmake/mingw-w64.cmake
index e762a989..ec552103 100644
--- a/cmake/mingw-w64.cmake
+++ b/cmake/mingw-w64.cmake
@@ -14,29 +14,29 @@ endif()
 SET(CMAKE_SYSTEM_NAME Windows)
 SET(CMAKE_SYSTEM_VERSION 5)
 
-# specify the cross compiler
-if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
-    #set(p D:/cygwin64/opt/bin/)
-    #set(p "/mingw32/bin/")
-    set(p "")
-    set(e .exe)
-    set(c "${p}")
-else()
-    set(p "")
-    set(c "${p}i686-w64-mingw32-")
-    set(e "")
-endif()
-
-SET(CMAKE_C_COMPILER    ${c}gcc${e})
-SET(CMAKE_CXX_COMPILER  ${c}g++${e})
-set(CMAKE_RC_COMPILER   ${c}windres${e})
-set(CMAKE_LINKER        ${c}ld${e})
-set(CMAKE_AR            ${c}gcc-ar${e}      CACHE STRING "" FORCE)
-set(CMAKE_NM            ${c}gcc-nm${e}      CACHE STRING "" FORCE)
-set(CMAKE_RANLIB        ${c}gcc-ranlib${e}  CACHE STRING "" FORCE)
-set(CMAKE_OBJCOPY       ${c}objcopy${e}     CACHE STRING "" FORCE)
-set(CMAKE_OBJDUMP       ${c}objdump${e}     CACHE STRING "" FORCE)
-set(CMAKE_STRIP         ${c}strip${e}       CACHE STRING "" FORCE)
+## specify the cross compiler
+#if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+#    #set(p D:/cygwin64/opt/bin/)
+#    #set(p "/mingw32/bin/")
+#    set(p "")
+#    set(e .exe)
+#    set(c "${p}")
+#else()
+#    set(p "")
+#    set(c "${p}i686-w64-mingw32-")
+#    set(e "")
+#endif()
+#
+#SET(CMAKE_C_COMPILER    ${c}gcc${e})
+#SET(CMAKE_CXX_COMPILER  ${c}g++${e})
+#set(CMAKE_RC_COMPILER   ${c}windres${e})
+#set(CMAKE_LINKER        ${c}ld${e})
+#set(CMAKE_AR            ${c}gcc-ar${e}      CACHE STRING "" FORCE)
+#set(CMAKE_NM            ${c}gcc-nm${e}      CACHE STRING "" FORCE)
+#set(CMAKE_RANLIB        ${c}gcc-ranlib${e}  CACHE STRING "" FORCE)
+#set(CMAKE_OBJCOPY       ${c}objcopy${e}     CACHE STRING "" FORCE)
+#set(CMAKE_OBJDUMP       ${c}objdump${e}     CACHE STRING "" FORCE)
+#set(CMAKE_STRIP         ${c}strip${e}       CACHE STRING "" FORCE)
 
 
 # search for programs in the host directories
@@ -46,30 +46,25 @@ SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 
 # oldest CPU supported here is Northwood-based Pentium 4. -sh 20150811
-set(fpu "-ffast-math -mfpmath=both -mstackrealign -falign-functions=16 -falign-loops=16")
-set(cpu "-O3 -march=native -frename-registers")
+set(fpu "-ffast-math -mfpmath=sse -mstackrealign")
+set(cpu "-O3 -msse3 -mtune=skylake")
 #set(lto "-fno-lto -fno-use-linker-plugin -flto-compression-level=9 -flto-partition=balanced -fno-ipa-pta -fno-lto-odr-type-merging")
 set(lto "")
-set(sections "-ffunction-sections -fdata-sections -s")
+set(sections "-ffunction-sections -fdata-sections")
 
 set(cc "")
 #set(cc "-fdump-statistics-details -fdump-ipa-cgraph")
 
-set(clang-warns "")
-if(CMAKE_COMPILER_IS_CLANGXX)
-    set(clang-warns "-Wweak-vtables")
-endif()
-
 set(noisy-warns "")
 set(suggest-final "")
 set(numerics "")
 set(missing-override "")
 if(WARNINGS_ENABLE)
     if(WARNINGS_FINAL_SUGGESTIONS)
-        set(suggest-final "-Wsuggest-final-types -Wsuggest-final-methods")
+        set(suggest-final "-Wsuggest-final-types")
     endif()
     if(WARNINGS_NUMERIC)
-        set(numerics "-Wdouble-promotion -Wsign-compare")
+        set(numerics "-Wdouble-promotion")
     endif()
     if(WARNINGS_MISSING_OVERRIDE)
         set(missing-override "-Wsuggest-override")
@@ -81,9 +76,9 @@ set(_CXX_WARNS "")
 set(_C_WARNS "")
 
 if(WARNINGS_ENABLE)
-    set(usual-warns "-Wdelete-non-virtual-dtor -Wno-suggest-override -Wno-odr -Wno-attributes -Wcast-align")
+    set(usual-warns "-Wstrict-aliasing=3 -Wstrict-overflow=4 -Wdelete-non-virtual-dtor -Wno-odr -Wattributes")
     set(_C_WARNS "-Wall -Wextra -Wpedantic -Wcast-align")
-    set(_CXX_WARNS "${_C_WARNS} ${usual-warns} ${clang-warns} ${noisy-warns} ${missing-override}")
+    set(_CXX_WARNS "${_C_WARNS} ${usual-warns} ${noisy-warns} ${missing-override}")
 endif()
 
 set(ccflags-common "-fvisibility=hidden -pipe -g3")
@@ -96,9 +91,9 @@ set(_CXXFLAGS_DEBUG "${_CFLAGS_DEBUG}")
 
 add_definitions(-DSTRSAFE_NO_DEPRECATE)
 
-set(_LDFLAGS "-Wl,--dynamicbase,--nxcompat,--as-needed")
-set(_LDFLAGS_RELEASE "-Wl,--gc-sections,--exclude-libs,ALL")
-set(_LDFLAGS_DEBUG "")
+#set(_LDFLAGS "-Wl,--dynamicbase,--nxcompat,--as-needed")
+#set(_LDFLAGS_RELEASE "-Wl,--gc-sections,--exclude-libs,ALL")
+#set(_LDFLAGS_DEBUG "")
 
 set(enable-val FALSE)
 if(CMAKE_PROJECT_NAME STREQUAL "opentrack")
@@ -117,10 +112,8 @@ foreach(j C CXX)
     endforeach()
 endforeach()
 
-foreach(j "" _DEBUG _RELEASE)
-    foreach(i MODULE EXE SHARED)
-        set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${CMAKE_${i}_LINKER_FLAGS${j}}")
-    endforeach()
-endforeach()
-
-
+#foreach(j "" _DEBUG _RELEASE)
+#    foreach(i MODULE EXE SHARED)
+#        set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${CMAKE_${i}_LINKER_FLAGS${j}}")
+#    endforeach()
+#endforeach()
-- 
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