Allow for overriding the CXX and CC executables

OTRExporter/OTRExporter/Makefile

@@ -1,6 +1,6 @@
 # Only used for standalone compilation, usually inherits these from the main makefile
 
-CXX := g++-12
+CXX ?= g++
 AR	:= ar
 FORMAT := clang-format-11
 

ZAPDTR/Makefile

@@ -9,7 +9,7 @@ LLD ?= 0
 WERROR ?= 0
 UNAME := $(shell uname)
 
-CXX := g++-12
+CXX ?= g++
 
 INC := -I ZAPD -I lib/elfio -I lib/libgfxd -I lib/tinyxml2 -I ZAPDUtils
 CXXFLAGS := -fpic -std=c++17 -Wall -Wextra -fno-omit-frame-pointer

ZAPDTR/ZAPDUtils/Makefile

@@ -1,5 +1,5 @@
 # Only used for standalone compilation, usually inherits these from the main makefile
-CXX := g++-12
+CXX ?= g++
 CXXFLAGS ?= -Wall -Wextra -O2 -g -std=c++17
 
 SRC_DIRS  := $(shell find . -type d -not -path "*build*")

ZAPDTR/lib/libgfxd/Makefile

@@ -1,4 +1,4 @@
-CC := gcc-12
+CC ?= gcc
 CFLAGS = -Wall -O2 -g
 UC_OBJ = uc_f3d.o uc_f3db.o uc_f3dex.o uc_f3dexb.o uc_f3dex2.o
 OBJ = gfxd.o $(UC_OBJ)

libultraship/Makefile

@@ -1,7 +1,7 @@
 # Only used for standalone compilation, usually inherits these from the main makefile
 
-CXX := g++-12
-CC := gcc-12
+CXX ?= g++
+CC ?= gcc
 AR	:= ar
 FORMAT := clang-format-11
 UNAME := $(shell uname)

soh/Makefile

@@ -1,5 +1,5 @@
-CXX := g++-12
-CC := gcc-12
+CXX ?= g++
+CC ?= gcc
 LD := lld
 AR	:= ar
 FORMAT := clang-format-11