Configuration summary:
* Name: linux-alpha-zero-slowdebug
* Debug level: slowdebug
* HS debug level: debug
* JVM variants: zero
* JVM features: zero: 'epsilongc g1gc jni-check jvmti management nmt parallelgc serialgc services vm-structs zero'
* OpenJDK target: OS: linux, CPU architecture: alpha, address length: 64
* Version string: 17-internal+0-adhoc.shade.jdk (17-internal)

Tools summary:
* Boot JDK: openjdk version "15-testing" 2020-09-15 OpenJDK Runtime Environment (build 15-testing+0-builds.shipilev.net-openjdk-jdk15-b17-20201010) OpenJDK 64-Bit Server VM (build 15-testing+0-builds.shipilev.net-openjdk-jdk15-b17-20201010, mixed mode, sharing) (at /home/shade/Install/jdk15.0.2-ea)
* Toolchain: gcc (GNU Compiler Collection)
* C Compiler: Version 9.3.0 (at /usr/bin/alpha-linux-gnu-gcc)
* C++ Compiler: Version 9.3.0 (at /usr/bin/alpha-linux-gnu-g++)

$ CONF=linux-alpha-zero-fastdebug make hotspot

* For target hotspot_variant-zero_libjvm_objs_cardTable.o:
cc1plus: error: '-fstack-protector' not supported for this target [-Werror]
cc1plus: all warnings being treated as errors

JDK-8199405 removed the conditional checks for -fstack-protector availability. I believe the intent was to trust that every recent GCC has this option. But this issue shows that stack-protector support is also arch-specific?