Merge topic 'android-no-libstdc++'

843d55de29 Android: Suppress implicit -lstdc++ linker flag

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1919

Modules/Platform/Android-Clang-CXX.cmake

@@ -1,2 +1,9 @@
 include(Platform/Android-Clang)
 __android_compiler_clang(CXX)
+if(_ANDROID_STL_NOSTDLIBXX)
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 6)
+    string(APPEND CMAKE_CXX_STANDARD_LIBRARIES " -nostdlib++")
+  else()
+    string(APPEND CMAKE_CXX_STANDARD_LIBRARIES " -nodefaultlibs -lgcc -lc -lm -ldl")
+  endif()
+endif()

Modules/Platform/Android-GNU-CXX.cmake

@@ -1,2 +1,5 @@
 include(Platform/Android-GNU)
 __android_compiler_gnu(CXX)
+if(_ANDROID_STL_NOSTDLIBXX)
+  string(APPEND CMAKE_CXX_STANDARD_LIBRARIES " -nodefaultlibs -lgcc -lc -lm -ldl")
+endif()

Modules/Platform/Android/ndk-stl-c++.cmake

@@ -1,6 +1,7 @@
 # <ndk>/sources/cxx-stl/llvm-libc++/Android.mk
 set(_ANDROID_STL_RTTI 1)
 set(_ANDROID_STL_EXCEPTIONS 1)
+set(_ANDROID_STL_NOSTDLIBXX 1)
 macro(__android_stl_cxx lang filename)
   # Add the include directory.
   if(EXISTS "${CMAKE_ANDROID_NDK}/sources/cxx-stl/llvm-libc++/libcxx/include/cstddef")

Modules/Platform/Android/ndk-stl-gabi++.cmake

@@ -1,6 +1,7 @@
 # <ndk>/sources/cxx-stl/gabi++/Android.mk
 set(_ANDROID_STL_RTTI 1)
 set(_ANDROID_STL_EXCEPTIONS 1)
+set(_ANDROID_STL_NOSTDLIBXX 1)
 macro(__android_stl_gabixx lang filename)
   __android_stl_inc(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/gabi++/include" 1)
   __android_stl_lib(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/gabi++/libs/${CMAKE_ANDROID_ARCH_ABI}/${filename}" 1)

Modules/Platform/Android/ndk-stl-gnustl.cmake

@@ -1,6 +1,7 @@
 # <ndk>/sources/cxx-stl/gnu-libstdc++/Android.mk
 set(_ANDROID_STL_RTTI 1)
 set(_ANDROID_STL_EXCEPTIONS 1)
+set(_ANDROID_STL_NOSTDLIBXX 1)
 macro(__android_stl_gnustl lang filename)
   __android_stl_inc(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${CMAKE_${lang}_ANDROID_TOOLCHAIN_VERSION}/include" 1)
   __android_stl_inc(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${CMAKE_${lang}_ANDROID_TOOLCHAIN_VERSION}/libs/${CMAKE_ANDROID_ARCH_ABI}/include" 1)

Modules/Platform/Android/ndk-stl-none.cmake

@@ -1,2 +1,3 @@
+set(_ANDROID_STL_NOSTDLIBXX 1)
 macro(__android_stl lang)
 endmacro()

Modules/Platform/Android/ndk-stl-stlport.cmake

@@ -1,6 +1,7 @@
 # <ndk>/sources/cxx-stl/stlport/Android.mk
 set(_ANDROID_STL_RTTI 1)
 set(_ANDROID_STL_EXCEPTIONS 1)
+set(_ANDROID_STL_NOSTDLIBXX 0)
 macro(__android_stl_stlport lang filename)
   __android_stl_inc(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/stlport/stlport" 1)
   __android_stl_lib(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/stlport/libs/${CMAKE_ANDROID_ARCH_ABI}/${filename}" 1)

Modules/Platform/Android/ndk-stl-system.cmake

@@ -1,6 +1,7 @@
 # <ndk>/android-ndk-r11c/sources/cxx-stl/system/Android.mk
 set(_ANDROID_STL_RTTI 0)
 set(_ANDROID_STL_EXCEPTIONS 0)
+set(_ANDROID_STL_NOSTDLIBXX 0)
 macro(__android_stl lang)
   __android_stl_inc(${lang} "${CMAKE_ANDROID_NDK}/sources/cxx-stl/system/include" 1)
 endmacro()