+# This apparently doesn't work on OS X (Darwin) nor on Solaris.
+# On Darwin we get errors of the form
+#
+# ld: absolute addressing (perhaps -mdynamic-no-pic) used in _stg_ap_0_fast from rts/dist/build/Apply.dyn_o not allowed in slidable image
+#
+# and lots of these warnings:
+#
+# ld: warning codegen in _stg_ap_pppv_fast (offset 0x0000005E) prevents image from loading in dyld shared cache
+#
+# On Solaris we get errors like:
+#
+# Text relocation remains referenced
+# against symbol offset in file
+# .rodata (section) 0x11 rts/dist/build/Apply.dyn_o
+# ...
+# ld: fatal: relocations remain against allocatable but non-writable sections
+# collect2: ld returned 1 exit status
+
+ifeq "$(TargetArch_CPP)" "i386"
+i386_SPEED_HACK := "YES"
+ifeq "$(TargetOS_CPP)" "darwin"
+i386_SPEED_HACK := "NO"
+endif
+ifeq "$(TargetOS_CPP)" "solaris2"
+i386_SPEED_HACK := "NO"
+endif
+endif
+
+ifeq "$(TargetArch_CPP)" "i386"
+ifeq "$(i386_SPEED_HACK)" "YES"
+rts/sm/Evac_HC_OPTS += -fno-PIC
+rts/sm/Evac_thr_HC_OPTS += -fno-PIC
+rts/sm/Scav_HC_OPTS += -fno-PIC
+rts/sm/Scav_thr_HC_OPTS += -fno-PIC
+rts/sm/Compact_HC_OPTS += -fno-PIC
+rts/sm/GC_HC_OPTS += -fno-PIC
+
+# -static is also necessary for these bits, otherwise the NCG
+# -generates dynamic references:
+rts/Updates_HC_OPTS += -fno-PIC -static
+rts/StgMiscClosures_HC_OPTS += -fno-PIC -static
+rts/PrimOps_HC_OPTS += -fno-PIC -static
+rts/Apply_HC_OPTS += -fno-PIC -static
+rts/dist/build/AutoApply_HC_OPTS += -fno-PIC -static
+endif
+endif