Replace long dash characters with normal ascii minus

[openssl.git] / NOTES.ANDROID

diff --git a/NOTES.ANDROID b/NOTES.ANDROID
index dcddc4cf779a1e3f179a0fe328b0199abf94a2a4..86459778fae1a944dc16f308dbe362d39cf406f6 100644 (file)
--- a/NOTES.ANDROID
+++ b/NOTES.ANDROID
@@ -23,31 +23,39 @@
  platform. Though you still need to know the prefix to extend your PATH,
  in order to invoke $(CROSS_COMPILE)gcc and company. (Configure will fail
  and give you a hint if you get it wrong.) Apart from PATH adjustment
- you need to set ANDROID_NDK environment to point at NDK directory
- as /some/where/android-ndk-<ver>. NDK customarily supports multiple
- Android API levels, e.g. android-14, android-21, etc. By default latest 
+ you need to set ANDROID_NDK_HOME environment to point at NDK directory
+ as /some/where/android-ndk-<ver>. Both variables are significant at both
+ configuration and compilation times. NDK customarily supports multiple
+ Android API levels, e.g. android-14, android-21, etc. By default latest
  one available is chosen. If you need to target older platform, pass
  additional -D__ANDROID_API__=N to Configure. N is numeric value of the
  target platform version. For example, to compile for ICS on ARM with
  NDK 10d:
 
-    ANDROID_NDK=/some/where/android-ndk-10d
-    PATH=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.8/prebuild/linux-x86_64/bin:$PATH
+    export ANDROID_NDK_HOME=/some/where/android-ndk-10d
+    PATH=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin:$PATH
     ./Configure android-arm -D__ANDROID_API__=14
+    make
 
  Caveat lector! Earlier OpenSSL versions relied on additional CROSS_SYSROOT
- variable set to $ANDROID_NDK/platforms/android-<api>/arch-<arch> to
+ variable set to $ANDROID_NDK_HOME/platforms/android-<api>/arch-<arch> to
  appoint headers-n-libraries' location. It's still recognized in order
  to facilitate migration from older projects. However, since API level
  appears in CROSS_SYSROOT value, passing -D__ANDROID_API__=N can be in
  conflict, and mixing the two is therefore not supported. Migration to
  CROSS_SYSROOT-less setup is recommended.
 
- One can engage clang by adjusting PATH to cover NDK's clang. Just keep
- in mind that if you miss it, Configure will try to use gcc... Also,
- PATH would need even further adjustment to cover unprefixed, yet
- target-specific, ar and ranlib (or not, if you use binutils-multiarch
- on your Linux).
+ One can engage clang by adjusting PATH to cover same NDK's clang. Just
+ keep in mind that if you miss it, Configure will try to use gcc...
+ Also, PATH would need even further adjustment to cover unprefixed, yet
+ target-specific, ar and ranlib. It's possible that you don't need to
+ bother, if binutils-multiarch is installed on your Linux system.
+
+ Another option is to create so called "standalone toolchain" tailored
+ for single specific platform including Android API level, and assign its
+ location to ANDROID_NDK_HOME. In such case you have to pass matching
+ target name to Configure and shouldn't use -D__ANDROID_API__=N. PATH
+ adjustment becomes simpler, $ANDROID_NDK_HOME/bin:$PATH suffices.
 
  Running tests (on Linux)
  ------------------------