- pass supplied FFLAGS to the build

--- makefile.orig	2022-01-21 11:28:48 UTC
+++ makefile
@@ -107,7 +107,7 @@ ifneq ($(comgcc), $(empty))
    EXTRAZ = -Wno-implicit-function-declaration
    EXT = ${EXTRAZ}
 endif
-FFLAGS = -g ${AFLAG}
+FFLAGS += -g ${AFLAG}
 LIBS =  -L/usr/X11R6/lib -lX11 -lm
 ifeq ($(AFLAG),"-m64")
 LIBS =  -L/usr/X11R6/lib64 -lX11 -lm
@@ -132,12 +132,12 @@ ifeq ($(uname), Darwin)
 #
 CC=cc
 CFLAGS= -std=gnu89 -Wno-return-type -DDARWIN -I/usr/X11R6/include -DDOBACK -DHASTIMER -DCOLOR_OFFSET=0.0 -Wno-logical-op-parentheses
-FFLAGS=-O3 -funroll-loops -fallow-argument-mismatch
+FFLAGS+=-O3 -funroll-loops -fallow-argument-mismatch
 
 LIBS = -L/usr/X11R6/lib -lX11 -lm
 LIBSG = -L/usr/X11R6/lib -lGLU "-Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib" -lGL -lXmu -lX11 -lm
 EXT= -std=gnu89 -Wno-return-type -DDARWIN ${EXTRAZ}
-FFLAGS=-O3 -funroll-loops
+FFLAGS+=-O3 -funroll-loops
 LIBS = -L/usr/X11R6/lib -lX11 -lm
 LIBSG = -L/usr/X11R6/lib -lGLU "-Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib" -lGL -lXmu -lX11 -lm
 CFLAGS= -g -std=gnu89 -Wno-return-type -DDARWIN -I/usr/X11R6/include -DDOBACK -DHASTIMER -DCOLOR_OFFSET=0.0 -Wno-logical-op-parentheses -Wno-tautological-pointer-compare -Wno-tautological-constant-out-of-range-compare -fallow-argument-mismatch
@@ -307,16 +307,16 @@ gmolden:	$(OBJS) src/mpdum.o src/xwingl.o 
 	mv gmolden bin/gmolden
 
 ambfor/ambfor:	src/ambfor/*.f src/ambfor/*.c
-	$(MAKE) -C src/ambfor FC=${FC} LDR="${LDR}" EXT="${EXT}"
+	$(MAKE) -C src/ambfor FC=${FC} LDR="${LDR}" EXT="${EXT}" FFLAGS="$(FFLAGS)"
 	mv src/ambfor/ambfor bin/ambfor
 
 ambfor/ambmd:	src/ambfor/*.f src/ambfor/*.c
-	$(MAKE) -C src/ambfor ambmd FC=${FC} LDR="${LDR}" EXT="${EXT}"
+	$(MAKE) -C src/ambfor ambmd FC=${FC} LDR="${LDR}" EXT="${EXT}" FFLAGS="$(FFLAGS)" FFLAGS="$(FFLAGS)"
 	mv src/ambfor/ambmd bin/ambmd
 
 surf/surf:	src/surf/*.h src/surf/*.c
 	$(MAKE) -C src/surf depend 
-	$(MAKE) -C src/surf EXT="${EXT}"
+	$(MAKE) -C src/surf EXT="${EXT}" FFLAGS="$(FFLAGS)"
 	mv src/surf/surf bin/surf
 
 # noxwin will not work as long as the old ocglbck calls arent in dummys