[Native Image] LLVM backend options are now unrecognized

[koutheir]

Describe the Issue

Attempting to build a native image with the LLVM backend doesn't recognize the LLVM backend parameter. Trying other LLVM backend parameters (defined in substratevm/src/com.oracle.svm.core.graal.llvm/src/com/oracle/svm/core/graal/llvm/util/LLVMOptions.java) produces the same error.

$ ./native-image -H:CompilerBackend=llvm -H:LLVMMaxFunctionsPerBatch=1 ...
Error: Unrecognized option '-H:LLVMMaxFunctionsPerBatch=...' from command line. Use '--expert-options' (see also '--help-extra') to list all available options.

Using the latest version of GraalVM can resolve many issues.

• I tried with the latest version of GraalVM.

GraalVM Version

native-image 25 2025-09-16
GraalVM Runtime Environment Oracle GraalVM 25+37.1 (build 25+37-LTS-jvmci-b01)
Substrate VM Oracle GraalVM 25+37.1 (build 25+37-LTS, serial gc, compressed references)

Operating System and Version

Linux ... 6.12.48-1-lts #1 SMP PREEMPT_DYNAMIC Sun, 21 Sep 2025 17:47:58 +0000 x86_64 GNU/Linux

Build Command

./native-image -H:CompilerBackend=llvm -H:LLVMMaxFunctionsPerBatch=1 ...

Expected Behavior

Build should start.

Actual Behavior

Error: Unrecognized option '-H:LLVMMaxFunctionsPerBatch=...' from command line. Use '--expert-options' (see also '--help-extra') to list all available options.

Steps to Reproduce

$ ./native-image -H:CompilerBackend=llvm -H:LLVMMaxFunctionsPerBatch=1 ...

Additional Context

No response

Build Log Output and Error Messages

No response

[olpaw]

Comment https://graalvm.slack.com/archives/G013WPNDRE0/p1759132317151379?thread_ts=1758894268.119429&cid=G013WPNDRE0 and the comments below explain how this can be solved.