Fix builds on riscv64 using musl

Some environments using musl are reported to have the hwprobe.h include file but not have the __NR_riscv_hwprobe define. Fixes openssl#25772 Reviewed-by: Viktor Dukhovni <[email protected]> Reviewed-by: Ben Kaduk <[email protected]> Reviewed-by: Paul Dale <[email protected]> Reviewed-by: Todd Short <[email protected]> (Merged from openssl#25787)
hanazuki · Oct 28, 2024 · 27fa9d3 · 27fa9d3
1 parent f30d6ba
commit 27fa9d3
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/include/crypto/riscv_arch.h b/include/crypto/riscv_arch.h
@@ -15,7 +15,14 @@
 
 # if defined(OPENSSL_SYS_LINUX) && !defined(FIPS_MODULE)
 #  if __has_include(<asm/hwprobe.h>)
-#   define OSSL_RISCV_HWPROBE
+#   include <sys/syscall.h>
+#   /*
+     * Some environments using musl are reported to have the hwprobe.h include
+     * file but not have the __NR_riscv_hwprobe define.
+     */
+#   ifdef __NR_riscv_hwprobe
+#    define OSSL_RISCV_HWPROBE
+#   endif
 #  endif
 # endif