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Android: rework build of OpenSSL to get it to build link and run

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This is squashed commit consisting of a number of subjects, all intended
to get our app to build, link and run on device, but as the steps are
small (but non-trivial), I document them in this one commit.

1) Do not use OpenSSLs install targets, but simply copy the wanted build
artifacts manually. The main reason for this, is that the install
targets want to install a lot more than we build, so it also builds
parts of the OpenSSL suite that we will never use.

2) As Android does not like shared libraries with embedded versioning
(and the used androiddeployqt actively prevents adding versioned
libraries to the build), strip all this data from the generated shared
libraries. This trick was already there, but its adapted to all possible
conflicts.

3) The OpenSSL config script seems rather broken, resulted in failed
builds, and calling the underlying Configure is simpler.

4) Finally, parts of the OpenSSL code uses stdio things like stdout,
stderr, etc. These showed up as undeclared external on build time. Well,
luckily, there was an easy way out using 2 -D(efines). This feels hacky,
but does the job (and we are not interested in the output of OpenSSL in
our app).

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
This commit is contained in:
Jan Mulder 2019-07-11 19:16:13 +02:00 • committed by Dirk Hohndel
parent bb895f1896
commit 9a70c260e8
1 changed files with 20 additions and 13 deletions
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33
packaging/android/build.sh
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@ -242,22 +242,29 @@ if [ "$QUICK" = "" ] ; then
mkdir -p openssl-build-"$ARCH"
cp -r openssl/* openssl-build-"$ARCH"
pushd openssl-build-"$ARCH"
perl -pi -e 's/install: all install_docs install_sw/install: install_docs install_sw/g' Makefile.org
perl -pi -e 's/-mandroid//g' Configure
export ANDROID_NDK_HOME=$ANDROID_NDK_ROOT
# Use env to make all these temporary, so they don't pollute later builds.
env SYSTEM=android \
CROSS_COMPILE=${BUILDCHAIN}- \
MACHINE=$OPENSSL_MACHINE \
HOSTCC=clang \
env PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin:$PATH \
CC=clang \
ANDROID_DEV="$PREFIX" \
bash -x ./config shared no-ssl2 no-ssl3 no-comp no-hw no-engine no-asm --openssldir="$PREFIX"
# sed -i.bak -e 's/soname=\$\$SHLIB\$\$SHLIB_SOVER\$\$SHLIB_SUFFIX/soname=\$\$SHLIB/g' Makefile.shared
./Configure android-"$ARCH" no-ssl2 no-ssl3 no-comp no-hw no-engine no-asm --prefix="$PREFIX" -DOPENSSL_NO_UI_CONSOLE -DOPENSSL_NO_STDIO
make depend
make
# now fix the reference to libcrypto.so.1.0.0 to be just to libcrypto.so
perl -pi -e 's/libcrypto.so.1.0.0/libcrypto.so\x00\x00\x00\x00\x00\x00/' libssl.so.1.0.0
make install_sw
make build_libs
# now fix the reference to libcrypto.so.1.1 and libssl.so.1.1 to be just unversioned
# as androiddeployqt and Android itself does not like versioned shared objects
perl -pi -e 's/libcrypto.so.1.1/libcrypto.so\x00\x00\x00\x00/' libcrypto.so.1.1
perl -pi -e 's/libcrypto.so.1.1/libcrypto.so\x00\x00\x00\x00/' libssl.so.1.1
perl -pi -e 's/libssl.so.1.1/libssl.so\x00\x00\x00\x00/' libcrypto.so.1.1
perl -pi -e 's/libssl.so.1.1/libssl.so\x00\x00\x00\x00/' libssl.so.1.1
cp -RL include/openssl $PREFIX/include/openssl
cp libcrypto.a $PREFIX/lib
cp libcrypto.so* $PREFIX/lib
cp libssl.a $PREFIX/lib
cp libssl.so* $PREFIX/lib
cp *.pc $PKG_CONFIG_LIBDIR
popd
fi
@ -428,7 +435,7 @@ cmake $MOBILE_CMAKE \
-DANDROID_NATIVE_LIBCRYPT="$BUILDROOT/ndk-$ARCH/sysroot/usr/lib/libcrypto.so" \
-DCMAKE_MAKE_PROGRAM="make" \
"$SUBSURFACE_SOURCE"
# set up the version number
rm -f ssrf-version.h