在共享庫中獲取未定義的引用

我創建了一個使用libcurl的示例共享庫。下面是對應的Makefile來創建共享庫：在共享庫中獲取未定義的引用

CC= arm-none-linux-gnueabi-gcc 
CPPFLAGS= -I/home/yuvi/development/libcurl/curl-7.24.0/build_arm/include -Wall -g 
LDFLAGS= -L/home/yuvi/development/libcurl/curl-7.24.0/build_arm/lib \ 
    -l:libcurl.a -l:libssh2.a -l:libssl.a -l:libcrypto.a \ 
    -L/home/yuvi/development/CD/VAR-SOM-OM35_VAR-SOM-OM37_VAR-SOM-AM35/Software/Linux/host_tools/linux/arm-2009q3/arm-none-linux-gnueabi/libc/lib -lrt 

all: resume.o libresume.so 

resume.o: 
    $(CC) $(CPPFLAGS) -c -fPIC resume_download.c -o resume_download.o $(LDFLAGS) 

libresume.so: 
    $(CC) -shared -Wl,-soname,libresume.so.1 -o libresume.so resume_download.o 

clean: 
    rm -f resume_download.o libresume.so

那該怎麼使用這個共享庫現在我已經創建了一個示例程序，Makefile文件該程序是：

CC= arm-none-linux-gnueabi-gcc 
CPPFLAGS= -I/home/yuvi/development/libcurl/curl-7.24.0/build_arm/include -Wall -g 
LDFLAGS= -L/home/yuvi/development/libcurl/curl-7.24.0/build_arm/lib \ 
    -l:libcurl.a -l:libssh2.a -l:libssl.a -l:libcrypto.a \ 
    -L/home/yuvi/development/CD/VAR-SOM-OM35_VAR-SOM-OM37_VAR-SOM-AM35/Software/Linux/host_tools/linux/arm-2009q3/arm-none-linux-gnueabi/libc/lib -lrt \ 
    -L/home/yuvi/development/libcurl/sample_program -lresume 

all: 
    $(CC) $(CPPFLAGS) resume_app.c -o app $(LDFLAGS)

但是如果我做上面的Makefile中，我收到以下錯誤：

/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_easy_setopt' 
/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_global_cleanup' 
/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_easy_init' 
/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_easy_perform' 
/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_easy_cleanup' 
/home/yuvi/development/libcurl/sample_program/libresume.so: undefined reference to `curl_global_init

現在我怎樣才能消除這些錯誤，有什麼問題在創建共享庫或編譯樣品PROG內存。請幫助....！

來源

2012-03-13 Yuvi

之前添加-lresume爲什麼你有'resume.o'作爲目標，而實際的對象文件被命名爲'resume_download.o'？ – 2012-03-13 12:43:09

的libcurl

-lresume -l:libcurl.a -l:libssh2.a -l:libssl.a -l:libcrypto.a ....

來源

2012-03-13 12:50:24 nos

感謝它工作:) – Yuvi 2012-03-13 12:59:03

在共享庫中獲取未定義的引用

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