包含共享库时出错
我是 g++ 和 Makefile 的新手。我正在尝试链接这个 BeBOP SMC 库,它位于我的 lib 目录中。 lib目录下有bebop_util和sparse_matrix_converter,这两个文件都已经构建完成,没有错误。我在bebop_util下看到libbebop_util.a、libbebop_util.so,在sparse_matrix_converter下看到libsparse_matrix_converter.a、libsparse_matrix_converter.so。下面是源代码:
Makefile
CC=g++
CFLAGS=-c
# CFLAGS=-c -Wall
INCLUDE_DIRS=-Ilib/bebop_util/include -Ilib/sparse_matrix_converter/include
LIB_DIRS=-Llib/bebop_util -Llib/sparse_matrix_converter
LIBS=-lbebop_util -lsparse_matrix_converter
test.out: test.o
$(CC) -o test.out $(LIB_DIRS) $(LIBS) test.o
test.o: test.cpp
$(CC) $(CFLAGS) $(INCLUDE_DIRS) test.cpp
clean:
rm -f test.o test.out
test.cpp
extern "C" {
#include <bebop/smc/sparse_matrix.h>
#include <bebop/smc/sparse_matrix_ops.h>
}
int main(int argc, const char* argv[])
{
struct sparse_matrix_t* A = load_sparse_matrix (MATRIX_MARKET, "sample_i
nput");
destroy_sparse_matrix(A);
return 0;
}
作为保护措施,我还设置了 LD_LIBRARY_PATH:
login4% setenv | grep LD_LIBRARY_PATH
LD_LIBRARY_PATH=/share/apps/teragrid/globus-4.0.8-r1/myproxy-3.4/lib:/share/apps/teragrid/globus-4.0.8-r1/lib:/share/apps/teragrid/srb-client-3.4.1-r1/lib:/opt/apps/pgi7_2/mvapich/1.0.1/lib:/opt/apps/pgi7_2/mvapich/1.0.1/lib/shared:/opt/apps/pgi/7.2-5/linux86-64/7.2-5/libso:/opt/gsi-openssh-4.3/lib:/opt/apps/binutils-amd/070220/lib64:/share/home/01355/tomwang/cs380p_assn3/lib:/share/home/01355/tomwang/cs380p_assn3/lib/bebob_util:/share/home/01355/tomwang/cs380p_assn3/lib/sparse_matrix_converter
输出
login3% make
g++ -c -Ilib/bebop_util/include -Ilib/sparse_matrix_converter/include test.cpp
g++ -o test.out -Llib/bebop_util -Llib/sparse_matrix_converter -lbebop_util -lsparse_matrix_converter test.o
login3% ./test.out
./test.out: error while loading shared libraries: libbebop_util.so: cannot open shared object file: No such file or directory
请建议我提供哪些可能是错误的或其他信息。谢谢。
汤姆
I am new to g++ and Makefile. I am trying to link this BeBOP SMC library, which is in my lib directory. Under the lib directory are bebop_util and sparse_matrix_converter, both of which have already been built without errors. I see libbebop_util.a, libbebop_util.so under bebop_util and libsparse_matrix_converter.a, libsparse_matrix_converter.so under sparse_matrix_converter. Below is the source:
Makefile
CC=g++
CFLAGS=-c
# CFLAGS=-c -Wall
INCLUDE_DIRS=-Ilib/bebop_util/include -Ilib/sparse_matrix_converter/include
LIB_DIRS=-Llib/bebop_util -Llib/sparse_matrix_converter
LIBS=-lbebop_util -lsparse_matrix_converter
test.out: test.o
$(CC) -o test.out $(LIB_DIRS) $(LIBS) test.o
test.o: test.cpp
$(CC) $(CFLAGS) $(INCLUDE_DIRS) test.cpp
clean:
rm -f test.o test.out
test.cpp
extern "C" {
#include <bebop/smc/sparse_matrix.h>
#include <bebop/smc/sparse_matrix_ops.h>
}
int main(int argc, const char* argv[])
{
struct sparse_matrix_t* A = load_sparse_matrix (MATRIX_MARKET, "sample_i
nput");
destroy_sparse_matrix(A);
return 0;
}
As a safeguard, I also have the LD_LIBRARY_PATH set:
login4% setenv | grep LD_LIBRARY_PATH
LD_LIBRARY_PATH=/share/apps/teragrid/globus-4.0.8-r1/myproxy-3.4/lib:/share/apps/teragrid/globus-4.0.8-r1/lib:/share/apps/teragrid/srb-client-3.4.1-r1/lib:/opt/apps/pgi7_2/mvapich/1.0.1/lib:/opt/apps/pgi7_2/mvapich/1.0.1/lib/shared:/opt/apps/pgi/7.2-5/linux86-64/7.2-5/libso:/opt/gsi-openssh-4.3/lib:/opt/apps/binutils-amd/070220/lib64:/share/home/01355/tomwang/cs380p_assn3/lib:/share/home/01355/tomwang/cs380p_assn3/lib/bebob_util:/share/home/01355/tomwang/cs380p_assn3/lib/sparse_matrix_converter
Output
login3% make
g++ -c -Ilib/bebop_util/include -Ilib/sparse_matrix_converter/include test.cpp
g++ -o test.out -Llib/bebop_util -Llib/sparse_matrix_converter -lbebop_util -lsparse_matrix_converter test.o
login3% ./test.out
./test.out: error while loading shared libraries: libbebop_util.so: cannot open shared object file: No such file or directory
Please suggest what may be wrong or additional info for me to provide. Thanks.
Tom
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评论(2)
您确定 LD_LIBRARY_PATH 中提到了
libbebop_util.so
所在的目录吗?根据您的构建线,以下内容应该有效:Are you sure the directory that
libbebop_util.so
is in is mentioned in your LD_LIBRARY_PATH? Based on your build line, the following should work:看来您的链接没有问题。相反,问题是您构建的可执行文件对 libbebop_util.so 的引用无效。
尝试运行 ldd test.out 来查看它在哪里寻找共享库。
It looks like you're not having problems with linking. Instead, the problem is that your built executable has a reference to libbebop_util.so that is invalid.
Try running
ldd test.out
to see where it's looking for the shared libraries.