Error Log while compilation

[singhPrabhat]

I have some .c and .h files in my directory. My aim is to compile the whole file. I am compiling each and every .c file by
gcc -c file_name then I use gcc -o some_text file_name.

I have found out that some file starts with #ifdef UNIX. But UNIX is nowhere defined in either header file(.h file) it includes not in the file itself.

For the time being I am defining as #include UNIX in the file whereever required.

some of the files getting compiled by gcc -c file_name and creates coressponding object file. but when I try to use
gcc -o some_text file_name then get the following error.


/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
/tmp/ccsbV9J2.o: In function `CCWebSSLPrintLastError':
CCWebSSL.c:(.text+0xfc): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x12a): undefined reference to `ERR_get_error_line_data'
CCWebSSL.c:(.text+0x14e): undefined reference to `ERR_error_string_n'
CCWebSSL.c:(.text+0x24d): undefined reference to `CCWebLog'
/tmp/ccsbV9J2.o: In function `CCWebSSLVerifyCallBack':
CCWebSSL.c:(.text+0x274): undefined reference to `X509_STORE_CTX_get_current_cert'
CCWebSSL.c:(.text+0x281): undefined reference to `X509_STORE_CTX_get_error'
CCWebSSL.c:(.text+0x28d): undefined reference to `X509_get_subject_name'
CCWebSSL.c:(.text+0x29f): undefined reference to `X509_NAME_oneline'
CCWebSSL.c:(.text+0x2b5): undefined reference to `X509_get_issuer_name'
CCWebSSL.c:(.text+0x2c7): undefined reference to `X509_NAME_oneline'
/tmp/ccsbV9J2.o: In function `CCWebSSLClientPasswordCallBack':
CCWebSSL.c:(.text+0x334): undefined reference to `CCWebLog'
/tmp/ccsbV9J2.o: In function `CCWebSSLInitialization':
CCWebSSL.c:(.text+0x36f): undefined reference to `SSL_library_init'
CCWebSSL.c:(.text+0x374): undefined reference to `SSL_load_error_strings'
CCWebSSL.c:(.text+0x379): undefined reference to `CRYPTO_num_locks'
CCWebSSL.c:(.text+0x400): undefined reference to `pthread_mutexattr_init'
CCWebSSL.c:(.text+0x42b): undefined reference to `pthread_mutexattr_setpshared'
CCWebSSL.c:(.text+0x4cd): undefined reference to `pthread_mutexattr_destroy'
CCWebSSL.c:(.text+0x516): undefined reference to `CRYPTO_set_id_callback'
CCWebSSL.c:(.text+0x520): undefined reference to `CRYPTO_set_locking_callback'
CCWebSSL.c:(.text+0x531): undefined reference to `RAND_seed'
CCWebSSL.c:(.text+0x536): undefined reference to `RAND_status'
/tmp/ccsbV9J2.o: In function `CCWebSSLTermination':
CCWebSSL.c:(.text+0x55f): undefined reference to `CRYPTO_set_locking_callback'
CCWebSSL.c:(.text+0x59b): undefined reference to `CRYPTO_num_locks'
/tmp/ccsbV9J2.o: In function `CCWebSSLFreeSessionData':
CCWebSSL.c:(.text+0x5f6): undefined reference to `SSL_SESSION_free'
/tmp/ccsbV9J2.o: In function `CCWebSSL':
CCWebSSL.c:(.text+0xe8a): undefined reference to `SSLv23_client_method'
CCWebSSL.c:(.text+0xed2): undefined reference to `SSLv2_client_method'
CCWebSSL.c:(.text+0xf16): undefined reference to `SSLv3_client_method'
CCWebSSL.c:(.text+0xf67): undefined reference to `SSL_CTX_new'
CCWebSSL.c:(.text+0x1041): undefined reference to `SSL_CTX_set_cipher_list'
CCWebSSL.c:(.text+0x1065): undefined reference to `iConfigurationSSLCertificateCheck'
CCWebSSL.c:(.text+0x1080): undefined reference to `SSL_CTX_load_verify_locations'
CCWebSSL.c:(.text+0x10a9): undefined reference to `SSL_CTX_set_verify'
CCWebSSL.c:(.text+0x10b5): undefined reference to `SSL_new'
CCWebSSL.c:(.text+0x10e7): undefined reference to `SSL_set_fd'
CCWebSSL.c:(.text+0x1108): undefined reference to `SSL_get_error'
CCWebSSL.c:(.text+0x1239): undefined reference to `SSL_set_session'
CCWebSSL.c:(.text+0x1280): undefined reference to `SSL_connect'
CCWebSSL.c:(.text+0x12bd): undefined reference to `SSL_get_error'
CCWebSSL.c:(.text+0x1326): undefined reference to `SSL_shutdown'
CCWebSSL.c:(.text+0x1332): undefined reference to `SSL_free'
CCWebSSL.c:(.text+0x1349): undefined reference to `SSL_CTX_free'
CCWebSSL.c:(.text+0x13ca): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x1643): undefined reference to `SSL_get_verify_result'
CCWebSSL.c:(.text+0x168d): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x16ad): undefined reference to `SSL_SESSION_free'
CCWebSSL.c:(.text+0x17bd): undefined reference to `SSL_shutdown'
CCWebSSL.c:(.text+0x17c9): undefined reference to `SSL_free'
CCWebSSL.c:(.text+0x17e0): undefined reference to `SSL_CTX_free'
CCWebSSL.c:(.text+0x1810): undefined reference to `SSL_get_verify_result'
CCWebSSL.c:(.text+0x18de): undefined reference to `SSL_get_session'
CCWebSSL.c:(.text+0x1979): undefined reference to `SSL_SESSION_free'
CCWebSSL.c:(.text+0x1a97): undefined reference to `SSL_get1_session'
CCWebSSL.c:(.text+0x1c6e): undefined reference to `SSL_SESSION_free'
CCWebSSL.c:(.text+0x1cb5): undefined reference to `CCWebCookieString'
CCWebSSL.c:(.text+0x24b2): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x24d3): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x2514): undefined reference to `SSL_write'
CCWebSSL.c:(.text+0x2546): undefined reference to `SSL_get_error'
CCWebSSL.c:(.text+0x2775): undefined reference to `SSL_pending'
CCWebSSL.c:(.text+0x29aa): undefined reference to `SSL_read'
CCWebSSL.c:(.text+0x29e6): undefined reference to `SSL_get_error'
CCWebSSL.c:(.text+0x2ced): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2d02): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2d20): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2d32): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2d4a): undefined reference to `iDumpLevel'
/tmp/ccsbV9J2.o:CCWebSSL.c:(.text+0x2d55): more undefined references to `iDumpLevel' follow
/tmp/ccsbV9J2.o: In function `CCWebSSL':
CCWebSSL.c:(.text+0x2d81): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x2d87): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2d92): undefined reference to `iDumpLevel'
CCWebSSL.c:(.text+0x2dd1): undefined reference to `CCWebLog'
CCWebSSL.c:(.text+0x2df7): undefined reference to `ERR_remove_state'
CCWebSSL.c:(.text+0x2e03): undefined reference to `SSL_shutdown'
CCWebSSL.c:(.text+0x2e27): undefined reference to `SSL_free'
CCWebSSL.c:(.text+0x2e4b): undefined reference to `SSL_CTX_free'
collect2: ld returned 1 exit status


Thanks

[JosAH]

Try to compile and link all your files in one go:

gcc *.c -o outputfile
 

If that UNIX flag isn't defined anywhere and you're not on a Unix box: fine; otherwise
define it yourself on the compiler's command line:

gcc -DUNIX *.c -o outputfile
 

kind regards,

Jos

[weaknessforcats]

I assume some_text_file_name includes all of the necessary headers. Yes?

Undefined references are caused by using something the compiler has neither seen declared not defined.

[JosAH]

I assume some_text_file_name includes all of the necessary headers. Yes?

Undefined references are caused by using something the compiler has neither seen declared not defined.

I'm afraid the OP is trying to compile and link each file separately.

kind regards,

Jos