设置项目根文件夹

Question

我有 C++ Makefile 项目。项目简化文件夹如下所示：

 tmp|
    |--Makefile
    |--lvgl
    |  |--lvgl.h
    |--lv_drivers
    |  |--display
    |     |--fbdev.h

单元 fbdev.h 包含包含：

#include "lvgl/lvgl.h"

我在构建时出错，包括：

lvgl/lvgl.h: No such file or directory 

如何通过从项目根文件夹中搜索来让构建系统找到 lvgl/lvgl.h。我应该以某种方式在 Makefile 项目根位置定义吗？

自动生成的 Makefile：

#Generated by VisualGDB project wizard. 
#Note: VisualGDB will automatically update this file when you add new sources to the project.
#All other changes you make in this file will be preserved.
#Visit http://visualgdb.com/makefiles for more details

#VisualGDB: AutoSourceFiles     #<--- remove this line to disable auto-updating of SOURCEFILES and EXTERNAL_LIBS

TARGETNAME := boilerX
#TARGETTYPE can be APP, STATIC or SHARED
TARGETTYPE := APP

to_lowercase = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))

macros-to-preprocessor-directives = $(foreach __macro, $(strip $1), \
    $(if $(findstring =,$(__macro)), \
        --pd "$(firstword $(subst =, ,$(__macro))) SETA $(subst ",\",$(lastword $(subst =, ,$(__macro))))", \
        --pd "$(__macro) SETA 1")) \

CONFIG ?= DEBUG

CONFIGURATION_FLAGS_FILE := $(call to_lowercase,$(CONFIG)).mak
TOOLCHAIN_ROOT ?= $(toolchain_root)

include $(CONFIGURATION_FLAGS_FILE)

#LINKER_SCRIPT defined inside the configuration file (e.g. debug.mak) should override any linker scripts defined in shared .mak files
CONFIGURATION_LINKER_SCRIPT := $(LINKER_SCRIPT)

include $(ADDITIONAL_MAKE_FILES)

ifneq ($(CONFIGURATION_LINKER_SCRIPT),)
LINKER_SCRIPT := $(CONFIGURATION_LINKER_SCRIPT)
endif

ifneq ($(LINKER_SCRIPT),)

ifeq ($(TOOLCHAIN_SUBTYPE),iar)
LDFLAGS += --config $(LINKER_SCRIPT)
else
LDFLAGS += -T$(LINKER_SCRIPT)
endif

endif

ifeq ($(AS),)
AS := as
endif

ifeq ($(AS),as)
AS := $(CC)
ASFLAGS := $(CFLAGS) $(ASFLAGS)
endif

ifeq ($(TOOLCHAIN_SUBTYPE),iar)
    CC_DEPENDENCY_FILE_SPECIFIER := --dependencies=m
    ASM_DEPENDENCY_FILE_SPECIFIER := && echo > 
    CXXFLAGS += --c++
    COMMONFLAGS += --silent

else ifeq ($(TOOLCHAIN_SUBTYPE),armcc)
    CC_DEPENDENCY_FILE_SPECIFIER := --depend
    ASM_DEPENDENCY_FILE_SPECIFIER := --depend
    USING_KEIL_TOOLCHAIN := 1
else ifeq ($(TOOLCHAIN_SUBTYPE),armclang)
    CC_DEPENDENCY_FILE_SPECIFIER := -MD -MF
    ASM_DEPENDENCY_FILE_SPECIFIER := --depend
    USING_KEIL_TOOLCHAIN := 1
else
    CC_DEPENDENCY_FILE_SPECIFIER := -MD -MF
    ASM_DEPENDENCY_FILE_SPECIFIER := -MD -MF
endif


ifeq ($(BINARYDIR),)
error:
    $(error Invalid configuration, please check your inputs)
endif

SOURCEFILES := boiler.cpp boilerX.cpp boiler_ui.cpp lvgl/examples/porting/lv_port_disp_template.c lvgl/examples/porting/lv_port_fs_template.c lvgl/examples/porting/lv_port_indev_template.c lvgl/src/lv_core/lv_disp.c lvgl/src/lv_core/lv_group.c lvgl/src/lv_core/lv_indev.c lvgl/src/lv_core/lv_obj.c lvgl/src/lv_core/lv_refr.c lvgl/src/lv_core/lv_style.c lvgl/src/lv_draw/lv_draw_arc.c lvgl/src/lv_draw/lv_draw_blend.c lvgl/src/lv_draw/lv_draw_img.c lvgl/src/lv_draw/lv_draw_label.c lvgl/src/lv_draw/lv_draw_line.c lvgl/src/lv_draw/lv_draw_mask.c lvgl/src/lv_draw/lv_draw_rect.c lvgl/src/lv_draw/lv_draw_triangle.c lvgl/src/lv_draw/lv_img_buf.c lvgl/src/lv_draw/lv_img_cache.c lvgl/src/lv_draw/lv_img_decoder.c lvgl/src/lv_font/lv_font.c lvgl/src/lv_font/lv_font_dejavu_16_persian_hebrew.c lvgl/src/lv_font/lv_font_fmt_txt.c lvgl/src/lv_font/lv_font_loader.c lvgl/src/lv_font/lv_font_montserrat_10.c lvgl/src/lv_font/lv_font_montserrat_12.c lvgl/src/lv_font/lv_font_montserrat_12_subpx.c lvgl/src/lv_font/lv_font_montserrat_14.c lvgl/src/lv_font/lv_font_montserrat_16.c lvgl/src/lv_font/lv_font_montserrat_18.c lvgl/src/lv_font/lv_font_montserrat_20.c lvgl/src/lv_font/lv_font_montserrat_22.c lvgl/src/lv_font/lv_font_montserrat_24.c lvgl/src/lv_font/lv_font_montserrat_26.c lvgl/src/lv_font/lv_font_montserrat_28.c lvgl/src/lv_font/lv_font_montserrat_28_compressed.c lvgl/src/lv_font/lv_font_montserrat_30.c lvgl/src/lv_font/lv_font_montserrat_32.c lvgl/src/lv_font/lv_font_montserrat_34.c lvgl/src/lv_font/lv_font_montserrat_36.c lvgl/src/lv_font/lv_font_montserrat_38.c lvgl/src/lv_font/lv_font_montserrat_40.c lvgl/src/lv_font/lv_font_montserrat_42.c lvgl/src/lv_font/lv_font_montserrat_44.c lvgl/src/lv_font/lv_font_montserrat_46.c lvgl/src/lv_font/lv_font_montserrat_48.c lvgl/src/lv_font/lv_font_montserrat_8.c lvgl/src/lv_font/lv_font_simsun_16_cjk.c lvgl/src/lv_font/lv_font_unscii_16.c lvgl/src/lv_font/lv_font_unscii_8.c lvgl/src/lv_gpu/lv_gpu_nxp_pxp.c lvgl/src/lv_gpu/lv_gpu_nxp_pxp_osa.c lvgl/src/lv_gpu/lv_gpu_nxp_vglite.c lvgl/src/lv_gpu/lv_gpu_stm32_dma2d.c lvgl/src/lv_hal/lv_hal_disp.c lvgl/src/lv_hal/lv_hal_indev.c lvgl/src/lv_hal/lv_hal_tick.c lvgl/src/lv_misc/lv_anim.c lvgl/src/lv_misc/lv_area.c lvgl/src/lv_misc/lv_async.c lvgl/src/lv_misc/lv_bidi.c lvgl/src/lv_misc/lv_color.c lvgl/src/lv_misc/lv_debug.c lvgl/src/lv_misc/lv_fs.c lvgl/src/lv_misc/lv_gc.c lvgl/src/lv_misc/lv_ll.c lvgl/src/lv_misc/lv_log.c lvgl/src/lv_misc/lv_math.c lvgl/src/lv_misc/lv_mem.c lvgl/src/lv_misc/lv_printf.c lvgl/src/lv_misc/lv_task.c lvgl/src/lv_misc/lv_templ.c lvgl/src/lv_misc/lv_txt.c lvgl/src/lv_misc/lv_txt_ap.c lvgl/src/lv_misc/lv_utils.c lvgl/src/lv_themes/lv_theme.c lvgl/src/lv_themes/lv_theme_empty.c lvgl/src/lv_themes/lv_theme_material.c lvgl/src/lv_themes/lv_theme_mono.c lvgl/src/lv_themes/lv_theme_template.c lvgl/src/lv_widgets/lv_arc.c lvgl/src/lv_widgets/lv_bar.c lvgl/src/lv_widgets/lv_btn.c lvgl/src/lv_widgets/lv_btnmatrix.c lvgl/src/lv_widgets/lv_calendar.c lvgl/src/lv_widgets/lv_canvas.c lvgl/src/lv_widgets/lv_chart.c lvgl/src/lv_widgets/lv_checkbox.c lvgl/src/lv_widgets/lv_cont.c lvgl/src/lv_widgets/lv_cpicker.c lvgl/src/lv_widgets/lv_dropdown.c lvgl/src/lv_widgets/lv_gauge.c lvgl/src/lv_widgets/lv_img.c lvgl/src/lv_widgets/lv_imgbtn.c lvgl/src/lv_widgets/lv_keyboard.c lvgl/src/lv_widgets/lv_label.c lvgl/src/lv_widgets/lv_led.c lvgl/src/lv_widgets/lv_line.c lvgl/src/lv_widgets/lv_linemeter.c lvgl/src/lv_widgets/lv_list.c lvgl/src/lv_widgets/lv_msgbox.c lvgl/src/lv_widgets/lv_objmask.c lvgl/src/lv_widgets/lv_objx_templ.c lvgl/src/lv_widgets/lv_page.c lvgl/src/lv_widgets/lv_roller.c lvgl/src/lv_widgets/lv_slider.c lvgl/src/lv_widgets/lv_spinbox.c lvgl/src/lv_widgets/lv_spinner.c lvgl/src/lv_widgets/lv_switch.c lvgl/src/lv_widgets/lv_table.c lvgl/src/lv_widgets/lv_tabview.c lvgl/src/lv_widgets/lv_textarea.c lvgl/src/lv_widgets/lv_tileview.c lvgl/src/lv_widgets/lv_win.c lvgl/tests/lv_test_assert.c lvgl/tests/lv_test_core/lv_test_core.c lvgl/tests/lv_test_core/lv_test_font_loader.c lvgl/tests/lv_test_core/lv_test_obj.c lvgl/tests/lv_test_core/lv_test_style.c lvgl/tests/lv_test_fonts/font_1.c lvgl/tests/lv_test_fonts/font_2.c lvgl/tests/lv_test_fonts/font_3.c lvgl/tests/lv_test_main.c lvgl/tests/lv_test_widgets/lv_test_label.c
EXTERNAL_LIBS := 
EXTERNAL_LIBS_COPIED := $(foreach lib, $(EXTERNAL_LIBS),$(BINARYDIR)/$(notdir $(lib)))

CFLAGS += $(COMMONFLAGS)
CXXFLAGS += $(COMMONFLAGS)
ASFLAGS += $(COMMONFLAGS)
LDFLAGS += $(COMMONFLAGS)

CFLAGS += $(addprefix -I,$(INCLUDE_DIRS))
CXXFLAGS += $(addprefix -I,$(INCLUDE_DIRS))

CFLAGS += $(addprefix -D,$(PREPROCESSOR_MACROS))
CXXFLAGS += $(addprefix -D,$(PREPROCESSOR_MACROS))

ifeq ($(USING_KEIL_TOOLCHAIN),1)
    ASFLAGS +=$(call macros-to-preprocesor-directives, $(PREPROCESSOR_MACROS))
else ifeq ($(TOOLCHAIN_SUBTYPE),iar)
    ASFLAGS := $(subst --cpu=,--cpu ,$(ASFLAGS))
    ASFLAGS := $(subst --fpu=,--fpu ,$(ASFLAGS))
    ASFLAGS := $(subst --silent,-S ,$(ASFLAGS))
    ASFLAGS += $(addprefix -D,$(PREPROCESSOR_MACROS))
else
    ASFLAGS += $(addprefix -D,$(PREPROCESSOR_MACROS))
endif

CXXFLAGS += $(addprefix -framework ,$(MACOS_FRAMEWORKS))
CFLAGS += $(addprefix -framework ,$(MACOS_FRAMEWORKS))
LDFLAGS += $(addprefix -framework ,$(MACOS_FRAMEWORKS))

LDFLAGS += $(addprefix -L,$(LIBRARY_DIRS))

ifeq ($(GENERATE_MAP_FILE),1)
LDFLAGS += -Wl,-Map=$(BINARYDIR)/$(basename $(TARGETNAME)).map
endif

LIBRARY_LDFLAGS = $(addprefix -l,$(LIBRARY_NAMES))

ifeq ($(IS_LINUX_PROJECT),1)
    RPATH_PREFIX := -Wl,--rpath='$$ORIGIN/../
    LIBRARY_LDFLAGS += $(EXTERNAL_LIBS)
    LIBRARY_LDFLAGS += -Wl,--rpath='$$ORIGIN'
    LIBRARY_LDFLAGS += $(addsuffix ',$(addprefix $(RPATH_PREFIX),$(dir $(EXTERNAL_LIBS))))
    
    ifeq ($(TARGETTYPE),SHARED)
        CFLAGS += -fPIC
        CXXFLAGS += -fPIC
        ASFLAGS += -fPIC
        LIBRARY_LDFLAGS += -Wl,-soname,$(TARGETNAME)
    endif
    
    ifneq ($(LINUX_PACKAGES),)
        PACKAGE_CFLAGS := $(foreach pkg,$(LINUX_PACKAGES),$(shell pkg-config --cflags $(pkg)))
        PACKAGE_LDFLAGS := $(foreach pkg,$(LINUX_PACKAGES),$(shell pkg-config --libs $(pkg)))
        CFLAGS += $(PACKAGE_CFLAGS)
        CXXFLAGS += $(PACKAGE_CFLAGS)
        LIBRARY_LDFLAGS += $(PACKAGE_LDFLAGS)
    endif   
else
    LIBRARY_LDFLAGS += $(EXTERNAL_LIBS)
endif

LIBRARY_LDFLAGS += $(ADDITIONAL_LINKER_INPUTS)

all_make_files := $(firstword $(MAKEFILE_LIST)) $(CONFIGURATION_FLAGS_FILE) $(ADDITIONAL_MAKE_FILES)

ifeq ($(STARTUPFILES),)
    all_source_files := $(SOURCEFILES)
else
    all_source_files := $(STARTUPFILES) $(filter-out $(STARTUPFILES),$(SOURCEFILES))
endif

source_obj1 := $(all_source_files:.cpp=.o)
source_obj2 := $(source_obj1:.c=.o)
source_obj3 := $(source_obj2:.s=.o)
source_obj4 := $(source_obj3:.S=.o)
source_obj5 := $(source_obj4:.cc=.o)
source_objs := $(source_obj5:.cxx=.o)

all_objs := $(addprefix $(BINARYDIR)/, $(notdir $(source_objs)))

PRIMARY_OUTPUTS :=

ifeq ($(GENERATE_BIN_FILE),1)
PRIMARY_OUTPUTS += $(BINARYDIR)/$(basename $(TARGETNAME)).bin
endif

ifeq ($(GENERATE_IHEX_FILE),1)
PRIMARY_OUTPUTS += $(BINARYDIR)/$(basename $(TARGETNAME)).ihex
endif

ifeq ($(PRIMARY_OUTPUTS),)
PRIMARY_OUTPUTS := $(BINARYDIR)/$(TARGETNAME)
endif

all: $(PRIMARY_OUTPUTS)

ifeq ($(USING_KEIL_TOOLCHAIN),1)

$(BINARYDIR)/$(basename $(TARGETNAME)).bin: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) --bin $< --output $@

$(BINARYDIR)/$(basename $(TARGETNAME)).ihex: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) --i32 $< --output $@

else ifeq ($(TOOLCHAIN_SUBTYPE),iar)

$(BINARYDIR)/$(basename $(TARGETNAME)).bin: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) --silent --bin $< $@

$(BINARYDIR)/$(basename $(TARGETNAME)).ihex: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) --silent --bin $< $@

else

$(BINARYDIR)/$(basename $(TARGETNAME)).bin: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) -O binary $< $@

$(BINARYDIR)/$(basename $(TARGETNAME)).ihex: $(BINARYDIR)/$(TARGETNAME)
    $(OBJCOPY) -O ihex $< $@

endif
    
EXTRA_DEPENDENCIES :=

ifneq ($(LINKER_SCRIPT),)
EXTRA_DEPENDENCIES += $(LINKER_SCRIPT)
endif

ifeq ($(TARGETTYPE),APP)
$(BINARYDIR)/$(TARGETNAME): $(all_objs) $(EXTERNAL_LIBS) $(EXTRA_DEPENDENCIES)
ifeq ($(DETACH_CODE_COVERAGE),1)
    $(VISUALGDB_DIR)/VisualGDB.exe /decover $@ $(all_objs)
endif
    $(LD) -o $@ $(LDFLAGS) $(START_GROUP) $(all_objs) $(LIBRARY_LDFLAGS) $(END_GROUP)
endif

ifeq ($(TARGETTYPE),SHARED)
$(BINARYDIR)/$(TARGETNAME): $(all_objs) $(EXTERNAL_LIBS) $(EXTRA_DEPENDENCIES)
    $(LD) -shared -o $@ $(LDFLAGS) $(START_GROUP) $(all_objs) $(LIBRARY_LDFLAGS) $(END_GROUP)
endif
    
ifeq ($(TARGETTYPE),STATIC)
$(BINARYDIR)/$(TARGETNAME): $(all_objs) $(EXTRA_DEPENDENCIES)
    $(AR) -r $@ $^
endif

-include $(all_objs:.o=.dep)

clean:
ifeq ($(USE_DEL_TO_CLEAN),1)
    cmd /C del /S /Q $(BINARYDIR)
else
    rm -rf $(BINARYDIR)
endif

$(BINARYDIR):
    mkdir $(BINARYDIR)

#VisualGDB: FileSpecificTemplates       #<--- VisualGDB will use the following lines to define rules for source files in subdirectories
$(BINARYDIR)/%.o : %.cpp $(all_make_files) |$(BINARYDIR)
    $(CXX) $(CXXFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)

$(BINARYDIR)/%.o : %.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)

$(BINARYDIR)/%.o : %.S $(all_make_files) |$(BINARYDIR)
    $(AS) $(ASFLAGS) -c $< -o $@ $(ASM_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)

$(BINARYDIR)/%.o : %.s $(all_make_files) |$(BINARYDIR)
    $(AS) $(ASFLAGS) -c $< -o $@ $(ASM_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)

$(BINARYDIR)/%.o : %.cc $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) $(CXXFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)

$(BINARYDIR)/%.o : %.cxx $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) $(CXXFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER)F $(@:.o=.dep)

#VisualGDB: GeneratedRules              #<--- All lines below are auto-generated. Remove this line to suppress auto-generation of file rules.


$(BINARYDIR)/lv_port_disp_template.o : lvgl/examples/porting/lv_port_disp_template.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


$(BINARYDIR)/lv_port_fs_template.o : lvgl/examples/porting/lv_port_fs_template.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


$(BINARYDIR)/lv_port_indev_template.o : lvgl/examples/porting/lv_port_indev_template.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


$(BINARYDIR)/lv_disp.o : lvgl/src/lv_core/lv_disp.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


$(BINARYDIR)/lv_group.o : lvgl/src/lv_core/lv_group.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


$(BINARYDIR)/lv_indev.o : lvgl/src/lv_core/lv_indev.c $(all_make_files) |$(BINARYDIR)
    $(CC) $(CFLAGS) -c $< -o $@ $(CC_DEPENDENCY_FILE_SPECIFIER) $(@:.o=.dep)


.............