c++ - 意外标记附近的语法错误 `newline'

Question

在使用 Makefile 编译一些代码后，我在尝试运行它时得到了这个:

$ ./libbookgui.a
./libbookgui.a: line 1: syntax error near unexpected token `newline'
./libbookgui.a: line 1: `!<arch>'

Makefile 包含以下内容。

INCLUDES = -I"$(FLTK)"
LIBS     = -lstdc++
CXXFLAGS = $(INCLUDES) -Wall -time -O3 -DNDEBUG -Wno-deprecated
LIBFLAGS = 
AR       = ar

.SUFFIXES: .cpp .o

# Create a list of source files.
SOURCES  = $(shell ls *.cpp)
# Create a list of object files from the source file lists.
OBJECTS = ${SOURCES:.cpp=.o}     
# Create a list of targets.
TARGETS = libbookgui.a

# Build all targets by default
all:    $(TARGETS)

%.a: $(OBJECTS)
    $(AR) rcs $@ $(OBJECTS)

# A rule to build .o file out of a .cpp file
%.o: %.cpp 
    $(CXX) $(CXXFLAGS) -o $@ -c $<

# A rule to clean all the intermediates and targets
clean:  
    rm -rf $(TARGETS) $(OBJECTS) *.out *.stackdump

我看到它有 TARGETS = libbookgui.a 行，编译器没有返回任何错误，它只是创建了 .a 文件。

有什么想法吗？

Answer 1

libbookgui.a 是一个静态库(其中聚合了多个目标文件)。

您应该运行可执行文件，而不是库。将此库链接到某个可执行文件并运行那个。

我建议你阅读 this article .