Ok, found the cause for that: it's that new XCODE8 compiler profile by @Zenith432.
Looks like it's something in CloverBuilder that mishandles
found in XCODE8_CC_FLAGS in tools_def.txt.
See post #983 by droples.
EDIT: It's not clover builder, because happening also with ./ebuild.sh -t XCODE8 -D ENABLE_SECURE_BOOT.
EDIT: I changed the quotation of __attribute__((ms_abi)) to use the same method as done in EDK2 tools_def.template. r4075. ./ebuild.sh -t XCODE8 -D ENABLE_SECURE_BOOT works now. Still have no idea why the quotation using backslashes only fails when compiling OpensslLib
Run the prefpane, select the Mic Input you want to use - RecLev is the main volume for audio input, so set it to something usable. - Microphone/Monitor/Line-In are secondary volumes for audio input - so set the one you're using to something useful and mute the others. - If you have iMix, set it to 100% - Mute other volumes on the Mic Input. - Make sure you're using latest 2.9.0d10.
If you still have problems, upload getdump.
I have some changes that make the System Volume Control for Mics change the RecLev, but haven't committed it yet.
I'm at a loss... what else can I do to make at least the mic/lineout to work?