Update BSC to compile with GHC 9.10.1

The only change is to an invocation of GHC used to compile Htcl, to
use -optc-D instead of -D, since not all versions of GHC pass -D
options to the C compiler.

src/comp/Makefile

@@ -81,8 +81,8 @@ GHCPATCH=$(shell echo $(GHCVERSION) | cut -d. -f3)
 ifeq ($(GHCMAJOR),9)
 
 # Warn about newer versions that are not yet supported
-GHCMINORGT8 := $(shell expr $(GHCMINOR) \> 8)
-ifeq ($(GHCMINORGT8),1)
+GHCMINORGT10 := $(shell expr $(GHCMINOR) \> 10)
+ifeq ($(GHCMINORGT10),1)
 $(warning Unsupported GHC 9 minor version: $(GHCMINOR))
 endif
 

src/vendor/htcl/Makefile

@@ -7,7 +7,9 @@ include $(TOP)/platform.mk
 
 TCLVER=$(shell echo 'catch { puts [info tclversion]; exit 0}; exit 1' | $(TCLSH))
 ifeq ($(TCLVER),8.5)
-GHCFLAGS += -DTCL85
+# Use -optc-D instead of -D, since not all versions of GHC pass -D to the C compiler
+# (see GHC issue 24885)
+GHCFLAGS += -optc-DTCL85
 else
 ifeq ($(TCLVER),8.6)
 # No flags needed