Current build instructions for iOS

[Gary Adams]

Looking at the link line which complains about mixing iOS and MacOSX SDKs,
I do not see the expected extra ld flags. e.g. 
"-miphoneos-version-min=8.0.0 -arch x86_64 ..."
Can you verify the configure step set the proper flags in *.gmk?
e.g. EXTRA_

I was surprised you were targetting iOS 7.0 as a minimal platform.
e.g. -miphoneos-version-min=7.0

If you are having shell quoting issues, it helps to use single quotes
when providing the with-extra flags. You just have to expand the
"$XCODE  ..." variable manually.

On 5/11/18, 1:37 PM, Steve Hannah wrote:
> Well,  it seems that the build problems are unrelated to Xcode 
> version.  I get the same thing with Xcode 7.1, 7.3, and 9.3.  They all 
> fail with some error related to
>
>     ld: building for OSX, but linking against dylib built for iOS 
>
>
> The build log and configure command and output are in this gist
> https://gist.github.com/shannah/03ca438b97c55dfc1c942112af43c5b6
>
> I've tried following where Google and Stackoverflow lead on these 
> errors, but have exhausted all of my current leads.
>
> If anything about these logs jump out to anyone, please share.
>
> Best regards
>
> Steve
>
> On Thu, May 10, 2018 at 12:56 PM, Steve Hannah <steve at weblite.ca 
> <mailto:steve at weblite.ca>> wrote:
>
>     Thanks for the tips.
>
>     I'm using the configure listed on the instructions
>     (http://openjdk.java.net/projects/mobile/ios.html
>     <http://openjdk.java.net/projects/mobile/ios.html>)
>
>     cd mobile-dev
>     bash configure \
>     --enable-option-checking=fatal \
>     --build=x86_64-apple-darwin \
>     --host=x86_64-macos-ios \
>     --target=x86_64-macos-ios \
>     --disable-warnings-as-errors \
>     --enable-headless-only \
>     --with-boot-jdk=$JDK_DIR \
>     --with-jdk-variant=normal \
>     --with-jvm-variants=minimal1 \
>     --enable-static-build=yes \
>     --with-extra-cflags="-arch x86_64 -Wno-implicit-function-declaration -Wno-unused-parameter -miphoneos-version-min=8.0.0" \
>     --with-extra-cxxflags="-arch x86_64 -Wno-implicit-function-declaration -Wno-unused-parameter -miphoneos-version-min=8.0.0" \
>     --with-extra-ldflags="-arch x86_64 -miphoneos-version-min=8.0.0 -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/system" \
>     --with-cups-include=$CUPS_DIR \
>     --with-sys-root=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk \
>     --with-tools-dir=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/../../usr/bin \
>     --with-debug-level=release \
>     --disable-precompiled-headers \
>     --with-freetype-lib=$FREETYPE_DIR/lib \
>     --with-freetype-include=$FREETYPE_DIR/include/freetype2
>
>
>         For iOS builds, I'd recommend first making sure you can build
>         for macosx with your installed toolchain,
>         and then try the iOS specific builds.
>
>
>     Thanks, I'll try that.
>
>
>         For the linking error, are you using more than one installed
>         version of Xcode.
>         e.g. "xcode-select -p" or DEVELOPER_DIR
>
>
>     I'm pretty sure I'm using just one at a time.  I'm using
>     xcode-select to specify which Xcode to use, and I'm using the
>     corresponding Xcode in the configure statement.
>
>
>         I usually would do a "LOG=debug" build to see the full command
>         passed to the linker,
>         but you have enough in the errors you already have.
>
>         clang: warning: using sysroot for 'iPhoneSimulator' but
>         targeting 'MacOSX' [-Wincompatible-sysroot]
>
>
>         Every object file and executable is built for a specific SDK.
>         The warning says the flags do not match the toolchain installed.
>
>         ld: warning: directory not found for option
>         '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/JavaVM.framework/Frameworks'
>
>         ld: building for OSX, but linking against dylib built for iOS
>         (/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/libc++.tbd).
>         file
>         '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/libc++.tbd'
>         for architecture x86_64
>
>
>         This would be a good time to compare the directory structure
>         of the iPhoneSimulator
>         SDK in Xcode 7.1 and 9.3. It may have changed.
>
>
>     Thanks.  I'll do that.  My attempt with 7.3 had similar results -
>     only I had to patch some code that required CoreServices, which
>     apparently isn't available in 7.3.  I'm going to download 7.1 and
>     see if that gets me through to the end.
>
>     Best regards
>
>     Steve
>
>
>