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author | Dr. David von Oheimb <David.von.Oheimb@siemens.com> | 2020-06-10 14:15:28 +0200 |
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committer | Dr. David von Oheimb <David.von.Oheimb@siemens.com> | 2020-07-05 11:29:43 +0200 |
commit | 036cbb6bbf30955abdcffaf6e52cd926d8d8ee75 (patch) | |
tree | 1929b9d33c7041858cbbed980f8c981d8eb77c3c /NOTES.ANDROID | |
parent | util/markdownlint.rb: Add two rule exceptions: MD023 and MD026 (diff) | |
download | openssl-036cbb6bbf30955abdcffaf6e52cd926d8d8ee75.tar.xz openssl-036cbb6bbf30955abdcffaf6e52cd926d8d8ee75.zip |
Rename NOTES*, README*, VERSION, HACKING, LICENSE to .md or .txt
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12109)
Diffstat (limited to 'NOTES.ANDROID')
-rw-r--r-- | NOTES.ANDROID | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/NOTES.ANDROID b/NOTES.ANDROID deleted file mode 100644 index 087d5e6f49..0000000000 --- a/NOTES.ANDROID +++ /dev/null @@ -1,91 +0,0 @@ - - NOTES FOR ANDROID PLATFORMS - =========================== - - Requirement details - ------------------- - - Beside basic tools like perl and make you'll need to download the Android - NDK. It's available for Linux, macOS and Windows, but only Linux - version was actually tested. There is no reason to believe that macOS - wouldn't work. And as for Windows, it's unclear which "shell" would be - suitable, MSYS2 might have best chances. NDK version should play lesser - role, the goal is to support a range of most recent versions. - - Configuration - ------------- - - Android is a cross-compiled target and you can't rely on ./Configure - to find out the configuration target for you. You have to name your - target explicitly; there are android-arm, android-arm64, android-mips, - android-mip64, android-x86 and android-x86_64 (*MIPS targets are no - longer supported with NDK R20+). - - Do not pass --cross-compile-prefix (as you might be tempted), as it - will be "calculated" automatically based on chosen platform. However, - you still need to know the prefix to extend your PATH, in order to - invoke $(CROSS_COMPILE)clang [*gcc on NDK 19 and lower] and company. - (Configure will fail and give you a hint if you get it wrong.) - - Apart from PATH adjustment you need to set ANDROID_NDK_ROOT environment - to point at the NDK directory. If you're using a side-by-side NDK the path - will look something like /some/where/android-sdk/ndk/<ver>, and for a - standalone NDK the path will be something like /some/where/android-ndk-<ver>. - Both variables are significant at both configuration and compilation times. - The NDK customarily supports multiple Android API levels, e.g. android-14, - android-21, etc. By default latest API level is chosen. If you need to - target an older platform pass the argument -D__ANDROID_API__=N to Configure, - with N being the numerical value of the target platform version. For example, - to compile for Android 10 arm64 with a side-by-side NDK r20.0.5594570 - - export ANDROID_NDK_ROOT=/home/whoever/Android/android-sdk/ndk/20.0.5594570 - PATH=$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin:$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin:$PATH - ./Configure android-arm64 -D__ANDROID_API__=29 - make - - Older versions of the NDK have GCC under their common prebuilt tools - directory, so the bin path will be slightly different. EG: to compile - for ICS on ARM with NDK 10d: - - export ANDROID_NDK_ROOT=/some/where/android-ndk-10d - PATH=$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin:$PATH - ./Configure android-arm -D__ANDROID_API__=14 - make - - Caveat lector! Earlier OpenSSL versions relied on additional CROSS_SYSROOT - variable set to $ANDROID_NDK_ROOT/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 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_ROOT. In such case you have to pass matching - target name to Configure and shouldn't use -D__ANDROID_API__=N. PATH - adjustment becomes simpler, $ANDROID_NDK_ROOT/bin:$PATH suffices. - - Running tests (on Linux) - ------------------------ - - This is not actually supported. Notes are meant rather as inspiration. - - Even though build output targets alien system, it's possible to execute - test suite on Linux system by employing qemu-user. The trick is static - linking. Pass -static to Configure, then edit generated Makefile and - remove occurrences of -ldl and -pie flags. You would also need to pick - API version that comes with usable static libraries, 42/2=21 used to - work. Once built, you should be able to - - env EXE_SHELL=qemu-<arch> make test - - If you need to pass additional flag to qemu, quotes are your friend, e.g. - - env EXE_SHELL="qemu-mips64el -cpu MIPS64R6-generic" make test |