Native toolchain can default to different ABI (amd64 in bug case).
Set target to i386.
https://bugs.gentoo.org/600664
diff --git a/mono/mini/aot-compiler.c b/mono/mini/aot-compiler.c
index 0656a57..690c96b 100644
--- a/mono/mini/aot-compiler.c
+++ b/mono/mini/aot-compiler.c
@@ -9926,4 +9926,6 @@ compile_asm (MonoAotCompile *acfg)
 #ifdef TARGET_WIN32_MSVC
 #define AS_OPTIONS "-c -x assembler"
+#elif defined(TARGET_X86) && !defined(TARGET_MACH)
+#define AS_OPTIONS "--32"
 #elif defined(TARGET_AMD64) && !defined(TARGET_MACH)
 #define AS_OPTIONS "--64"
@@ -9981,4 +9983,6 @@ compile_asm (MonoAotCompile *acfg)
 #elif defined(TARGET_POWERPC64)
 #define LD_OPTIONS "-m elf64ppc"
+#elif defined(TARGET_X86)
+#define LD_OPTIONS "-m elf_i386"
 #endif