我有以下问题:
cc -g -O2 -Wall -Wextra -Isrc -rdynamic -DNDEBUG build/liblcthw.a tests/list_tests.c -o tests/list_tests
/tmp/ccpvGjZp.o: In function `test_create':
~/lcthw/tests/list_tests.c:12: undefined reference to `List_create'
collect2: ld returned 1 exit status
make: *** [tests/list_tests] Error 1
但
cc -g -O2 -Wall -Wextra -Isrc -rdynamic -DNDEBUG tests/list_tests.c build/liblcthw.a -o tests/list_tests
运行良好, nm
显示预期的内容,测试运行,大家乐等。
我如此搜查,发现了大量的答案(例如链接顺序- GCC ),所以很明显,链接器配合工作,因为它真的应该。 所以,我应该如何修改我的makefile遵循的顺序?
这里的Makefile文件至今:
CFLAGS=-g -O2 -Wall -Wextra -Isrc -rdynamic -DNDEBUG $(OPTFLAGS)
LIBS=$(OPTLIBS)
PREFIX?=/usr/local
BUILD=build
SOURCES=$(wildcard src/**/*.c src/*.c)
OBJECTS=$(patsubst %.c,%.o,$(SOURCES))
TEST_SRC=$(wildcard tests/*_tests.c)
TESTS=$(patsubst %.c,%,$(TEST_SRC))
TARGET=$(BUILD)/liblcthw.a
TARGET_LINK=lcthw
SO_TARGET=$(patsubst %.a,%.so,$(TARGET))
#The Target Build
all: $(TARGET) $(SO_TARGET) tests
dev: CFLAGS=-g -Wall -Isrc -Wall -Wextra $(OPTFLAGS)
dev: all
$(TARGET): CFLAGS += -fPIC
$(TARGET): build $(OBJECTS)
ar rcs $@ $(OBJECTS)
ranlib $@
$(SO_TARGET): $(TARGET) $(OBJECTS)
$(CC) -shared -o $@ $(OBJECTS)
build:
@mkdir -p $(BUILD)
@mkdir -p bin
#The Unit Tests
.PHONY: tests
tests: CFLAGS+=$(TARGET) #I think this line is useless now
tests: $(TESTS)
sh ./tests/runtests.sh
#some other irrelevant targets
试图像递归调用一些奇怪的和明显错误的事情
$(TESTS):
$(MAKE) $(TESTS) $(TARGET)
在运行此Debian6
上的VirtualBox下Windows7
。 系统规格:
$ uname -a
Linux VMDebian 2.6.32-5-686 #1 SMP Mon Mar 26 05:20:33 UTC 2012 i686 GNU/Linux
$ gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.4.5 (Debian 4.4.5-8)
PS它从肖捷思锐的学习C困难的方法, 锻炼33 。 不知道我是否应该将其标记为功课:)