qmail 컴파일 make: *** [qmail-remote.o] 오류 1

root@server:/usr/local/src/qmail/netqmail-1.05/netqmail-1.05# make
./compile qmail-remote.c
In file included from qmail-remote.c:53:
tls.h:4:25: error: openssl/ssl.h: No such file or directory
In file included from qmail-remote.c:53:
tls.h:7: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
tls.h:9: error: expected ‘)’ before ‘*’ token
In file included from qmail-remote.c:54:
ssl_timeoutio.h:8:3: error: #error "Need OpenSSL version at least 0.9.6"
In file included from qmail-remote.c:54:
ssl_timeoutio.h:11: error: expected declaration specifiers or ‘...’ before ‘SSL’
ssl_timeoutio.h:12: error: expected declaration specifiers or ‘...’ before ‘SSL’
ssl_timeoutio.h:13: error: expected declaration specifiers or ‘...’ before ‘SSL’
ssl_timeoutio.h:15: error: expected declaration specifiers or ‘...’ before ‘SSL’
ssl_timeoutio.h:16: error: expected declaration specifiers or ‘...’ before ‘SSL’
ssl_timeoutio.h:19: error: expected declaration specifiers or ‘...’ before ‘SSL’
qmail-remote.c:55:29: error: openssl/x509v3.h: No such file or directory
qmail-remote.c: In function ‘saferead’:
qmail-remote.c:128: error: ‘ssl’ undeclared (first use in this function)
qmail-remote.c:128: error: (Each undeclared identifier is reported only once
qmail-remote.c:128: error: for each function it appears in.)
qmail-remote.c:129: warning: passing argument 5 of ‘ssl_timeoutread’ makes integer from pointer without a cast
ssl_timeoutio.h:15: note: expected ‘int’ but argument is of type ‘char *’
qmail-remote.c:129: error: too many arguments to function ‘ssl_timeoutread’
qmail-remote.c: In function ‘safewrite’:
qmail-remote.c:141: error: ‘ssl’ undeclared (first use in this function)
qmail-remote.c:142: warning: passing argument 5 of ‘ssl_timeoutwrite’ makes integer from pointer without a cast
ssl_timeoutio.h:16: note: expected ‘int’ but argument is of type ‘char *’
qmail-remote.c:142: error: too many arguments to function ‘ssl_timeoutwrite’
qmail-remote.c: In function ‘quit’:
qmail-remote.c:269: error: ‘ssl’ undeclared (first use in this function)
qmail-remote.c:269: error: ‘SSL_ST_BEFORE’ undeclared (first use in this function)
qmail-remote.c:270: error: ‘SSL_ST_OK’ undeclared (first use in this function)
qmail-remote.c: In function ‘tls_quit’:
qmail-remote.c:337: error: ‘ssl’ undeclared (first use in this function)
qmail-remote.c: At top level:
qmail-remote.c:353: error: expected declaration specifiers or ‘...’ before ‘X509_STORE_CTX’
qmail-remote.c: In function ‘tls_init’:
qmail-remote.c:358: error: ‘SSL’ undeclared (first use in this function)
qmail-remote.c:358: error: ‘myssl’ undeclared (first use in this function)
qmail-remote.c:359: error: ‘SSL_CTX’ undeclared (first use in this function)
qmail-remote.c:359: error: ‘ctx’ undeclared (first use in this function)
qmail-remote.c:392: error: ‘ssl’ undeclared (first use in this function)
qmail-remote.c:405: error: ‘NULL’ undeclared (first use in this function)
qmail-remote.c:411: error: ‘SSL_VERIFY_PEER’ undeclared (first use in this function)
qmail-remote.c:417: error: ‘SSL_FILETYPE_PEM’ undeclared (first use in this function)
qmail-remote.c:457: error: too many arguments to function ‘ssl_timeoutconn’
qmail-remote.c:461: error: ‘X509’ undeclared (first use in this function)
qmail-remote.c:461: error: ‘peercert’ undeclared (first use in this function)
qmail-remote.c:462: error: ‘GENERAL_NAME’ undeclared (first use in this function)
qmail-remote.c:462: error: ‘gens’ undeclared (first use in this function)
qmail-remote.c:465: error: ‘X509_V_OK’ undeclared (first use in this function)
qmail-remote.c:467: warning: passing argument 2 of ‘tls_quit’ makes pointer from integer without a cast
qmail-remote.c:335: note: expected ‘const char *’ but argument is of type ‘int’
qmail-remote.c:479: error: ‘NID_subject_alt_name’ undeclared (first use in this function)
qmail-remote.c:483: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
qmail-remote.c:483: error: ‘gn’ undeclared (first use in this function)
qmail-remote.c:484: error: ‘GEN_DNS’ undeclared (first use in this function)
qmail-remote.c:487: error: ‘GENERAL_NAME_free’ undeclared (first use in this function)
qmail-remote.c:493: error: ‘X509_NAME’ undeclared (first use in this function)
qmail-remote.c:493: error: ‘subj’ undeclared (first use in this function)
qmail-remote.c:494: error: ‘NID_commonName’ undeclared (first use in this function)
qmail-remote.c:496: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
qmail-remote.c:496: error: ‘s’ undeclared (first use in this function)
make: *** [qmail-remote.o] 오류 1


libssl-dev를 설치해준다.
sudo apt-get install libssl-dev

출처: http://ubuntuforums.org/showthread.php?t=423314