cmake: switch CMAKE_HOST_SYSTEM_NAME to Android, which is used to set

CMAKE_SYSTEM_NAME by default, then disable CMake's built-in NDK support
when CMAKE_SYSTEM_NAME is set to Android.

packages/cmake/Modules-CMakeDetermineSystem.cmake.patch

@@ -0,0 +1,13 @@
+diff --git a/Modules/CMakeDetermineSystem.cmake b/Modules/CMakeDetermineSystem.cmake
+index dc208c600..f3ec4da2d 100644
+--- a/Modules/CMakeDetermineSystem.cmake
++++ b/Modules/CMakeDetermineSystem.cmake
+@@ -43,7 +43,7 @@ if(CMAKE_HOST_UNIX)
+     else()
+       exec_program(${CMAKE_UNAME} ARGS -r OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION)
+     endif()
+-    if(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|CYGWIN.*|Darwin|^GNU$")
++    if(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|CYGWIN.*|Darwin|^GNU$|Android")
+       exec_program(${CMAKE_UNAME} ARGS -m OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
+         RETURN_VALUE val)
+       if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin" AND

packages/cmake/Modules-Platform-Android-Clang.cmake.patch

@@ -0,0 +1,17 @@
+diff --git a/Modules/Platform/Android-Clang.cmake b/Modules/Platform/Android-Clang.cmake
+index 9ed1e01f9..6443512ee 100644
+--- a/Modules/Platform/Android-Clang.cmake
++++ b/Modules/Platform/Android-Clang.cmake
+@@ -24,6 +24,12 @@ if(CMAKE_SYSTEM_VERSION EQUAL 1)
+   return()
+ endif()
+ 
++if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
++  macro(__android_compiler_clang lang)
++  endmacro()
++  return()
++endif()
++
+ include(Platform/Android-Common)
+ 
+ # The NDK toolchain configuration files at:

packages/cmake/Modules-Platform-Android-Determine-Compiler.cmake.patch

@@ -0,0 +1,19 @@
+diff --git a/Modules/Platform/Android/Determine-Compiler.cmake b/Modules/Platform/Android/Determine-Compiler.cmake
+index a03ebcc29..34d527741 100644
+--- a/Modules/Platform/Android/Determine-Compiler.cmake
++++ b/Modules/Platform/Android/Determine-Compiler.cmake
+@@ -31,6 +31,14 @@ elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux")
+   set(_ANDROID_HOST_EXT "")
+ elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+   set(_ANDROID_HOST_EXT ".exe")
++elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
++  macro(__android_determine_compiler lang)
++  # Do nothing
++  endmacro()
++  if(NOT CMAKE_CXX_COMPILER_NAMES)
++    set(CMAKE_CXX_COMPILER_NAMES c++)
++  endif()
++  return()
+ else()
+   message(FATAL_ERROR "Android: Builds hosted on '${CMAKE_HOST_SYSTEM_NAME}' not supported.")
+ endif()

packages/cmake/Modules-Platform-Android-Determine.cmake.patch

@@ -0,0 +1,15 @@
+diff --git a/Modules/Platform/Android-Determine.cmake b/Modules/Platform/Android-Determine.cmake
+index bb42eedde..0e8229d5e 100644
+--- a/Modules/Platform/Android-Determine.cmake
++++ b/Modules/Platform/Android-Determine.cmake
+@@ -18,6 +18,10 @@ if(CMAKE_SYSTEM_VERSION EQUAL 1)
+   return()
+ endif()
+ 
++if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
++  return()
++endif()
++
+ cmake_policy(PUSH)
+ cmake_policy(SET CMP0057 NEW) # if IN_LIST
+ 

packages/cmake/Modules-Platform-Android-Initialize.cmake.patch

@@ -0,0 +1,15 @@
+diff --git a/Modules/Platform/Android-Initialize.cmake b/Modules/Platform/Android-Initialize.cmake
+index a434f90ea..407ed3358 100644
+--- a/Modules/Platform/Android-Initialize.cmake
++++ b/Modules/Platform/Android-Initialize.cmake
+@@ -17,6 +17,10 @@ if(CMAKE_SYSTEM_VERSION EQUAL 1)
+   return()
+ endif()
+ 
++if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
++  return()
++endif()
++
+ if(NOT CMAKE_SYSROOT)
+   if(CMAKE_ANDROID_NDK)
+     set(CMAKE_SYSROOT "${CMAKE_ANDROID_NDK}/platforms/android-${CMAKE_SYSTEM_VERSION}/arch-${CMAKE_ANDROID_ARCH}")

packages/cmake/Modules-Platform-Android.cmake.patch

@@ -0,0 +1,15 @@
+diff --git a/Modules/Platform/Android.cmake b/Modules/Platform/Android.cmake
+index f08f84176..9e719df39 100644
+--- a/Modules/Platform/Android.cmake
++++ b/Modules/Platform/Android.cmake
+@@ -2,6 +2,10 @@ include(Platform/Linux)
+ 
+ set(ANDROID 1)
+ 
++if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
++  return()
++endif()
++
+ # Conventionally Android does not use versioned soname
+ # But in modern versions it is acceptable
+ if(NOT DEFINED CMAKE_PLATFORM_NO_VERSIONED_SONAME)

packages/cmake/Source-cmStateSnapshot.cxx.patch

@@ -0,0 +1,20 @@
+diff --git a/Source/cmStateSnapshot.cxx b/Source/cmStateSnapshot.cxx
+index 63bec710b..19286c50e 100644
+--- a/Source/cmStateSnapshot.cxx
++++ b/Source/cmStateSnapshot.cxx
+@@ -316,11 +316,15 @@ void cmStateSnapshot::SetDefaultDefinitions()
+   this->SetDefinition("UNIX", "1");
+   this->SetDefinition("CMAKE_HOST_UNIX", "1");
+ 
++#if defined(__ANDROID__)
++    this->SetDefinition("CMAKE_HOST_SYSTEM_NAME", "Android");
++#else
+   struct utsname uts_name;
+   if (uname(&uts_name) >= 0) {
+     this->SetDefinition("CMAKE_HOST_SYSTEM_NAME", uts_name.sysname);
+   }
+ #endif
++#endif
+ #if defined(__CYGWIN__)
+   std::string legacy;
+   if (cmSystemTools::GetEnv("CMAKE_LEGACY_CYGWIN_WIN32", legacy) &&

packages/cmake/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://cmake.org/
 TERMUX_PKG_DESCRIPTION="Family of tools designed to build, test and package software"
 TERMUX_PKG_LICENSE="BSD 3-Clause"
 TERMUX_PKG_VERSION=3.15.2
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_REVISION=2
 TERMUX_PKG_SRCURL=https://www.cmake.org/files/v${TERMUX_PKG_VERSION:0:4}/cmake-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_SHA256=539088cb29a68e6d6a8fba5c00951e5e5b1a92c68fa38a83e1ed2f355933f768
 TERMUX_PKG_DEPENDS="libarchive, libc++, libcurl, libexpat, jsoncpp, libuv, rhash, make, clang, zlib"