-DFMT_HEADER_ONLY as a compiler flag

CMakeLists.txt

@@ -112,6 +112,7 @@ if(HAS_FCF_PROTECTION)
 endif()
 
 target_compile_definitions(btop PRIVATE
+  FMT_HEADER_ONLY
   _FILE_OFFSET_BITS=64
   $<$<CONFIG:Debug>:_GLIBCXX_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS=1>
   # Only has an effect with optimizations enabled

Makefile

@@ -179,7 +179,7 @@ override GOODFLAGS := $(foreach flag,$(TESTFLAGS),$(strip $(shell echo "int main
 override REQFLAGS   := -std=c++20
 WARNFLAGS			:= -Wall -Wextra -pedantic
 OPTFLAGS			:= -O2 -ftree-vectorize -flto=$(LTO)
-LDCXXFLAGS			:= -pthread -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 $(GOODFLAGS) $(ADDFLAGS)
+LDCXXFLAGS			:= -pthread -DFMT_HEADER_ONLY -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 $(GOODFLAGS) $(ADDFLAGS)
 override CXXFLAGS	+= $(REQFLAGS) $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
 override LDFLAGS	+= $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
 INC					:= $(foreach incdir,$(INCDIRS),-isystem $(incdir)) -I$(SRCDIR)

src/btop.cpp

@@ -53,6 +53,7 @@ tab-size = 4
 #include "btop_draw.hpp"
 #include "btop_menu.hpp"
 #include "fmt/core.h"
+#include "fmt/ostream.h"
 
 using std::atomic;
 using std::cout;

src/btop_tools.hpp

@@ -46,11 +46,9 @@ tab-size = 4
 		#define HOST_NAME_MAX 64
 	#endif
 #endif
-#define FMT_HEADER_ONLY
+
 #include "fmt/core.h"
 #include "fmt/format.h"
-#include "fmt/ostream.h"
-#include "fmt/ranges.h"
 
 using std::array;
 using std::atomic;