Now that GNU binutils targets 64-bit by default, gcc needs to explicitly
pass --32 to the assembler.

--- illumos-gcc-0f5ed4c/gcc/config/i386/sol2-10.h.orig
+++ illumos-gcc-0f5ed4c/gcc/config/i386/sol2-10.h
@@ -26,7 +26,7 @@
 #undef ASM_SPEC
 #ifdef USE_GAS
 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} " \
-		 "%{Wa,*:%*} %{m32:--32} %{m64:--64} -s %(asm_cpu)"
+		 "%{Wa,*:%*} %{!m64:--32} %{m64:--64} -s %(asm_cpu)"
 #else
 #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} " \
 		 "%{Wa,*:%*} %{m32:-xarch=generic} %{m64:-xarch=generic64} " \
--- illumos-gcc-0f5ed4c/gcc/configure.orig
+++ illumos-gcc-0f5ed4c/gcc/configure
@@ -22108,7 +22108,7 @@
 	leal	foo@NTPOFF(%ecx), %eax'
 	tls_first_major=2
 	tls_first_minor=14
-	tls_as_opt=--fatal-warnings
+	tls_as_opt="-32 --fatal-warnings"
 	;;
   x86_64-*-*)
     conftest_s='
--- illumos-gcc-0f5ed4c/gcc/configure.ac.orig
+++ illumos-gcc-0f5ed4c/gcc/configure.ac
@@ -2551,7 +2551,7 @@
 	leal	foo@NTPOFF(%ecx), %eax'
 	tls_first_major=2
 	tls_first_minor=14
-	tls_as_opt=--fatal-warnings
+	tls_as_opt="-32 --fatal-warnings"
 	;;
   x86_64-*-*)
     conftest_s='