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我想使用autotools设置一个项目。我将需要将可执行文件链接到GLFW，但我无法使其运行。Autotools没有正确链接GLFW
configure.ac：
AC_INIT([Test], [0.1], [[email protected]])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])
AC_PROG_CXX
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([
Makefile
src/Makefile
])
AC_OUTPUT
PKG_CHECK_MODULES([glfw3],[glfw3])
Makefile.am：
SUBDIRS = src
的src/Makefile.am：
bin_PROGRAMS = testapp
testapp_SOURCES = main.cpp
testapp_CFLAGS = ${glfw3_CFLAGS}
testapp_LDADD = ${glfw3_LIBS}
当我运行./configure，一切顺利刚精细。 glfw3被发现为expexted。但是，当我尝试使用make编译代码时，看起来可执行文件没有正确链接。
make all-recursive
make[1]: Entering directory '/home/dennis/Utveckling/testapp'
Making all in src
make[2]: Entering directory '/home/dennis/Utveckling/testapp/src'
g++ -DHAVE_CONFIG_H -I. -I.. -g -O2 -MT main.o -MD -MP -MF .deps/main.Tpo -c -o main.o main.cpp
mv -f .deps/main.Tpo .deps/main.Po
g++ -g -O2 -o testapp main.o
main.o: In function `main':
/home/dennis/Utveckling/testapp/src/main.cpp:6: undefined reference to `glfwInit'
/home/dennis/Utveckling/testapp/src/main.cpp:7: undefined reference to `glfwCreateWindow'
/home/dennis/Utveckling/testapp/src/main.cpp:8: undefined reference to `glfwMakeContextCurrent'
/home/dennis/Utveckling/testapp/src/main.cpp:12: undefined reference to `glClear'
/home/dennis/Utveckling/testapp/src/main.cpp:13: undefined reference to `glfwSwapBuffers'
/home/dennis/Utveckling/testapp/src/main.cpp:14: undefined reference to `glfwPollEvents'
/home/dennis/Utveckling/testapp/src/main.cpp:10: undefined reference to `glfwWindowShouldClose'
collect2: error: ld returned 1 exit status
Makefile:333: recipe for target 'testapp' failed
make[2]: *** [testapp] Error 1
make[2]: Leaving directory '/home/dennis/Utveckling/testapp/src'
Makefile:353: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/dennis/Utveckling/testapp'
Makefile:294: recipe for target 'all' failed
make: *** [all] Error 2
我在做什么错？该代码是从http://www.glfw.org/documentation.html