Make ca command silently use default if .attr file does not exist

[openssl.git] / NOTES.ANDROID

diff --git a/NOTES.ANDROID b/NOTES.ANDROID
index f6c28d28ad9e1f906a6a5fecbbffd163bdb330b8..bbbd8e4db9218c42e5275aecce62b24fbfb73757 100644 (file)
--- a/NOTES.ANDROID
+++ b/NOTES.ANDROID
@@ -24,16 +24,18 @@
  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
+ 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=/some/where/android-ndk-10d
+    PATH=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin:$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
@@ -43,10 +45,17 @@
  conflict, and mixing the two is therefore not supported. Migration to
  CROSS_SYSROOT-less setup is recommended.
 
- One can engage clang by passing CC=clang to Configure. In such case
- PATH needs even more adjustments to cover NDK's clang itself, as well
- as 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. In such case you have to pass matching target
+ name to Configure and shouldn't use -D__ANDROID_API__=N. PATH adjusment
+ becomes simpler, $ANDROID_NDK/bin:$PATH suffices.
 
  Running tests (on Linux)
  ------------------------