編譯我編寫的C代碼時出現以下錯誤。我明白問題出在頭文件中。任何人都可以告訴我哪些頭文件需要定義這些函數。頭文件故障
sign.c: In function ‘main’:
sign.c:78: warning: assignment makes pointer from integer without a cast
/tmp/ccnsSeHy.o: In function `sign_data_evp':
sign.c:(.text+0x68): undefined reference to `check_ssl_rv'
sign.c:(.text+0xd5): undefined reference to `check_ssl_rv'
sign.c:(.text+0x13e): undefined reference to `check_ssl_rv'
/tmp/ccnsSeHy.o: In function `main':
sign.c:(.text+0x1ca): undefined reference to `initialize'
sign.c:(.text+0x1d6): undefined reference to `select_engine'
sign.c:(.text+0x20a): undefined reference to `sign_data'
sign.c:(.text+0x216): undefined reference to `clean_engine'
sign.c:(.text+0x21b): undefined reference to `clean_up'
collect2: ld returned 1 exit status
,我已經使用至今的頭文件:
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <netdb.h>
#include <unistd.h>
#ifdef __VMS
#include <socket.h>
#include <inet.h>
#include <in.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#endif
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
運行平臺:Linux的 在此先感謝。
我嘗試使用編譯它'gcc的-o樣本-lssl -lcrypt sample.c' 我應該鏈接哪個其他庫來編譯這些函數? – binish
@binish通常'-lssl'丟失,或者庫的路徑設置不正確。 –
試試'gcc -o sample sample.c -lcrypto -lssl'。庫的順序和來源很重要。後者必須解析之前指定的模塊/庫的符號。反之亦然。 – mity