Error when building POCO for Android with NETSSL support-CodePudding

I'm trying to build POCO for Android (x86) with NetSSL_OpenSSL support which is not enabled by default. This is my configure line:

$ ./configure --config=Android

And this is my cmake line:

$ cmake -H. -B./poco-build-x86 -G'Ninja' -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=/Users/me/Library/Android/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_NATIVE_API_LEVEL=21 -DANDROID_ABI=x86 -DCMAKE_INSTALL_PREFIX:PATH=install-x86  -DOPENSSL_ROOT_DIR=/Users/me/dev/openssl-1.1.1g/install-x86/ -DOPENSSL_CRYPTO_LIBRARY=/Users/me/dev/openssl-1.1.1g/install-x86/lib -DOPENSSL_INCLUDE_DIR=/Users/me/dev/openssl-1.1.1g/install-x86 -DENABLE_CRYPTO=ON -DENABLE_NETSSL=ON

I'm getting this error at cmake time:

-- Checking for C  14 compiler
-- Checking for C  14 compiler - available
-- Could NOT find APR (missing: APR_INCLUDE_DIR APR_LIBRARY)
-- Could NOT find APRUTIL (missing: APRUTIL_INCLUDE_DIR APRUTIL_LIBRARY)
-- Could NOT find Apache2 (missing: APACHE2_INCLUDE_DIR)
-- Could NOT find MYSQL (missing: MYSQL_INCLUDE_DIR MYSQL_LIBRARY)
-- Could NOT find PostgreSQL (missing: PostgreSQL_LIBRARY PostgreSQL_INCLUDE_DIR)
-- Could NOT find ODBC (missing: ODBC_LIBRARY ODBC_INCLUDE_DIR)
-- Building without tests & samples
-- Using internal sqlite, zlib, pcre, expat, ...
-- SQLite Support Enabled
-- MySQL Support Disabled
-- PostgreSQL Support Disabled
-- ODBC Support Disabled
-- CMake 3.10.2 successfully configured Poco using Ninja generator
-- Poco package version: 1.10.1
-- Building dynamic libraries
-- [cmake] Installation target path: install-x86
-- [cmake] Use toolchain file:      /Users/juangarcia/Library/Android/android-ndk-r19c/build/cmake/android.toolchain.cmake
-- [cmake] Bulid for OS type:       Android
-- [cmake] Build for OS version:    1
-- [cmake] Build for CPU type:      i686
-- [cmake] Build type:              Release
-- [cmake] Build with cxx flags:    -O2 -DNDEBUG  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -fno-addrsig -Wa,--noexecstack -Wformat -Werror=format-security -stdlib=libc  
-- [cmake] Build with c flags:      -O2 -DNDEBUG  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -fno-addrsig -Wa,--noexecstack -Wformat -Werror=format-security
-- Building: Encodings
-- Building: XML
-- Building: JSON
-- Building: Util
-- Building: Net
-- Building: MongoDB
-- Building: Redis
-- Building: NetSSL_OpenSSL
-- Building: Crypto
-- Building: Data
-- Building: Zip
-- Building: PageCompiler
-- Building: File2Page
-- Configuring done
CMake Error at NetSSL_OpenSSL/CMakeLists.txt:16 (add_library):
  Target "NetSSL" links to target "OpenSSL::SSL" but the target was not
  found.  Perhaps a find_package() call is missing for an IMPORTED target, or
  an ALIAS target is missing?

...

What I'm doing wrong?

CodePudding user response：

The solution for this question was use static libraries from OpenSSL. So, you need to link against .a instead of .so/.dylib. Something like:

cmake -H. -B./poco-build-x86 -G'Ninja' -DCMAKE_BUILD_TYPE=Release -DCMAKE_MAKE_PROGRAM=/Users/juangarcia/Library/Android/sdk/cmake/3.10.2.4988404/bin/ninja -DCMAKE_TOOLCHAIN_FILE=/Users/juangarcia/Library/Android/android-ndk-r19c/build/cmake/android.toolchain.cmake -DCMAKE_C_COMPILER=/Users/juangarcia/Library/Android/android-ndk-r19c/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang -DCMAKE_CXX_COMPILER=/Users/juangarcia/Library/Android/android-ndk-r19c/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang   -DANDROID_NATIVE_API_LEVEL=24 -DANDROID_ABI=x86 -DOPENSSL_CRYPTO_LIBRARY=/Users/juangarcia/Downloads/openssl_111_android/lib/x86/libcrypto.a -DOPENSSL_SSL_LIBRARY=/Users/juangarcia/Downloads/openssl_111_android/lib/x86/libssl.a -DOPENSSL_USE_STATIC_LIBS=TRUE -DENABLE_NETSSL=TRUE -DOPENSSL_INCLUDE_DIR=/Users/juangarcia/Downloads/openssl_111_android/inc/x86 -DCMAKE_INSTALL_PREFIX=install-x86

You should note that in the command above, I'm setting CMAKE_INSTALL_PREFIX to auto install in a directory, but it is not necessary to solve the question.