架構x86_64的未定義符號：「_g_object_unref」

我真的很陌生，也是我使用的庫或框架（Gtk，Gdk和OpenCL）來創建應顯示mandelbrot集作爲動態圖片。架構x86_64的未定義符號：「_g_object_unref」

我已經根據我的教授提供的makefile創建了這個make文件。我與他的makefile遇到的問題是由於這樣的事實，我的教授正在使用其他操作系統，等

所以，我改變了自己的makefile來這是我的新的Makefile：

GTK_PACKAGES=gdk-pixbuf-2.0 gtk+-2.0 
GTK_CFLAGS=$(shell pkg-config --cflags $(GTK_PACKAGES)) 
GTK_LIBS=$(shell pkg-config --libs $(GTK_PACKAGES)) 

CFLAGS=-g -Wall -O2 -std=c99 $(GTK_CFLAGS) 
LIBS=$(GTK_LIBS) 

PROGS=opencl_mandelbrot 

.PHONY: all 
all: $(PROGS) 

%: %.c 
    $(CC) $(CFLAGS) $(LDFLAGS) $*.c -framework OpenCL -o [email protected] 

%.o: %.c 
    $(CC) $(CFLAGS) -c $*.c -o [email protected] 

opencl_mandelbrot: opencl_mandelbrot.o opencl_util.o 
    $(CC) $(CFLAGS) $(LDFLAGS) opencl_mandelbrot.o opencl_util.o -framework OpenCL -o [email protected] 

.PHONY: clean 
clean: 
    rm -f *.o $(PROGS)

但當我嘗試在終端上鍵入make，我有以下錯誤：

cc -g -Wall -O2 -std=c99 -D_REENTRANT -I/opt/X11/include/cairo -I/opt/X11/include/pixman-1 -I/opt/X11/include -I/opt/X11/include/freetype2 -I/opt/X11/include/libpng15 -I/opt/X11/include -I/usr/local/Cellar/gdk-pixbuf/2.32.3/include/gdk-pixbuf-2.0 -I/usr/local/Cellar/gtk+/2.24.30/include/gtk-2.0 -I/usr/local/Cellar/gtk+/2.24.30/lib/gtk-2.0/include -I/usr/local/Cellar/pango/1.38.1/include/pango-1.0 -I/usr/local/Cellar/harfbuzz/1.2.6/include/harfbuzz -I/usr/local/Cellar/pango/1.38.1/include/pango-1.0 -I/usr/local/Cellar/atk/2.18.0_1/include/atk-1.0 -I/usr/local/Cellar/libpng/1.6.21/include/libpng16 -I/usr/local/Cellar/glib/2.46.2/include/glib-2.0 -I/usr/local/Cellar/glib/2.46.2/lib/glib-2.0/include -I/usr/local/opt/gettext/include -c opencl_mandelbrot.c -o opencl_mandelbrot.o 
cc -g -Wall -O2 -std=c99 -D_REENTRANT -I/opt/X11/include/cairo -I/opt/X11/include/pixman-1 -I/opt/X11/include -I/opt/X11/include/freetype2 -I/opt/X11/include/libpng15 -I/opt/X11/include -I/usr/local/Cellar/gdk-pixbuf/2.32.3/include/gdk-pixbuf-2.0 -I/usr/local/Cellar/gtk+/2.24.30/include/gtk-2.0 -I/usr/local/Cellar/gtk+/2.24.30/lib/gtk-2.0/include -I/usr/local/Cellar/pango/1.38.1/include/pango-1.0 -I/usr/local/Cellar/harfbuzz/1.2.6/include/harfbuzz -I/usr/local/Cellar/pango/1.38.1/include/pango-1.0 -I/usr/local/Cellar/atk/2.18.0_1/include/atk-1.0 -I/usr/local/Cellar/libpng/1.6.21/include/libpng16 -I/usr/local/Cellar/glib/2.46.2/include/glib-2.0 -I/usr/local/Cellar/glib/2.46.2/lib/glib-2.0/include -I/usr/local/opt/gettext/include opencl_mandelbrot.o opencl_util.o -framework OpenCL -o opencl_mandelbrot 
Undefined symbols for architecture x86_64: 
    "_g_object_unref", referenced from: 
     _reallocate_pixbufs in opencl_mandelbrot.o 
    "_g_type_check_instance_cast", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gdk_draw_pixbuf", referenced from: 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_get_height", referenced from: 
     _reallocate_pixbufs in opencl_mandelbrot.o 
     _recenter in opencl_mandelbrot.o 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_get_n_channels", referenced from: 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_get_pixels", referenced from: 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_get_rowstride", referenced from: 
     _reallocate_pixbufs in opencl_mandelbrot.o 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_get_width", referenced from: 
     _reallocate_pixbufs in opencl_mandelbrot.o 
     _recenter in opencl_mandelbrot.o 
     _draw_mandelbrot_full_with_gpu in opencl_mandelbrot.o 
    "_gdk_pixbuf_new", referenced from: 
     _reallocate_pixbufs in opencl_mandelbrot.o 
    "_gtk_init", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_main", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_main_quit", referenced from: 
     _destroy_window in opencl_mandelbrot.o 
     _keyboard_input in opencl_mandelbrot.o 
    "_gtk_object_get_type", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_signal_connect_full", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_widget_set_events", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_widget_show_all", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_window_get_type", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_window_new", referenced from: 
     _main in opencl_mandelbrot.o 
    "_gtk_window_resize", referenced from: 
     _main in opencl_mandelbrot.o 
ld: symbol(s) not found for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 
make: *** [opencl_mandelbrot] Error 1

即使我使用 brew安裝 gtk

，但我想這個問題是關係到聯動或類似的東西的順序。 ..

我感謝您的幫助！

來源

2016-05-17 nbro

opencl_mandelbrot: opencl_mandelbrot.o opencl_util.o 
    $(CC) $(CFLAGS) $(LDFLAGS) $(LIBS) opencl_mandelbrot.o opencl_util.o -framework OpenCL -o [email protected]

你錯過了LIBS

來源

2016-05-17 08:07:03

分配GTK +連接器選項來LIBS變量，但在你的規則，你使用LDFLAGS變量，使您獲得鏈接錯誤，因爲鏈接器無法解析符號，因爲它沒有指示在戰鬥場所尋找他們。

變化：

LIBS=$(GTK_LIBS)

到

LDFLAGS=$(GTK_LIBS)

或添加$(LIBS)到鏈接器的規則。

來源

2016-05-17 08:07:37

通過嘗試重新創建內置規則，您最終添加了自己的錯誤，您不需要告訴make如何編譯或鏈接，它已經知道，所有您需要做的就是設置正確的變量。

GTK_PACKAGES := gdk-pixbuf-2.0 gtk+-2.0 
GTK_CFLAGS := $(shell pkg-config --cflags $(GTK_PACKAGES)) 
GTK_LIBS  := $(shell pkg-config --libs $(GTK_PACKAGES)) 

CFLAGS  := -g -Wall -O2 -std=c99 $(GTK_CFLAGS) 
LDLIBS  := $(GTK_LIBS) 

PROGS := opencl_mandelbrot 

.PHONY: all clean 

all: $(PROGS) 

opencl_mandelbrot: LDFLAGS += -framework OpenCL 
opencl_mandelbrot: opencl_mandelbrot.o opencl_util.o 

clean: ; $(RM) *.o $(PROGS)

小心刪除使用通配符的文件，如果您要重新分配代碼，這是一個壞主意。

來源

2016-05-17 09:03:10 user657267

架構x86_64的未定義符號：「_g_object_unref」

回答

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