Compile updates

- Fix compile on newer Fedora (possibly anything with newer gcc 12+??).
  This was manifesting itself as an issue compiling httpAPI.cpp
  regarding create_webserver::use_dual_stack()
- Remove fix for gcc versions older than v9.

src/makefiles/common/setup.mk

@@ -44,7 +44,7 @@ ifeq '$(SRCDIR)' ''
 endif
 
 ifeq '$(CXXCOMPILER)' 'g++'
-    GCCVERSIONGTEQ9:=$(shell expr `gcc -dumpversion | cut -f1 -d.` \>= 9)
+    GCCVERSIONGTEQ12:=$(shell expr `gcc -dumpversion | cut -f1 -d.` \>= 12)
     # Common CFLAGS
 ifeq ($(DISTCC_HOSTS),)
     PCH_FILE=fpp-pch.h.gch
@@ -54,12 +54,10 @@ else
 endif
     OPTIMIZE_FLAGS=-O3 -Wno-psabi
     debug: OPTIMIZE_FLAGS=-g -DDEBUG -Wno-psabi
-    CXXFLAGS += -std=gnu++2a
-
-    ifeq "$(GCCVERSIONGTEQ9)" "0"
-		LD_FLAG_FS=-lstdc++fs
-	else
-		LD_FLAG_FS=
+    ifeq "$(GCCVERSIONGTEQ12)" "1"
+        CXXFLAGS += -std=gnu++23
+    else
+        CXXFLAGS += -std=gnu++2a
     endif
 else
     OPTIMIZE_FLAGS=-O3

src/makefiles/fpp_so.mk

@@ -136,7 +136,7 @@ LIBS_fpp_so += \
 	-lGraphicsMagick \
 	-lGraphicsMagickWand \
 	-lGraphicsMagick++ \
-    $(LIBS_GPIO_ADDITIONS) $(LD_FLAG_FS)
+    $(LIBS_GPIO_ADDITIONS)
 
 ifneq ($(wildcard /usr/local/include/vlc/vlc.h),)
 LIBS_fpp_so += -lvlc

src/makefiles/fppcapedetect.mk

@@ -11,7 +11,7 @@ LIBS_fppcapedetect = \
 	-ljsoncpp
 
 LIBS_libfpp_capeutils_so = \
-	-ljsoncpp -lcrypto $(LD_FLAG_FS)
+	-ljsoncpp -lcrypto
 
 # At boot time, reading off the SD card is a huge bottleneck as nothing is cached
 # and all the services starting in parallel are trying to load things.

src/makefiles/fppoled.mk

@@ -21,7 +21,7 @@ OBJECTS_fppoled += \
 LIBS_fppoled = \
 	-ljsoncpp \
 	-lcurl \
-	$(LIBS_GPIO_ADDITIONS) -L. $(LIBS_GPIO_EXE_ADDITIONS) $(LD_FLAG_FS)
+	$(LIBS_GPIO_ADDITIONS) -L. $(LIBS_GPIO_EXE_ADDITIONS)
 
 TARGETS += fppoled
 OBJECTS_ALL+=$(OBJECTS_fppoled)