configure: re-order SSL libs when linking When doing static builds, the ordering of libs is important, as the linker does not back-pedal to previous libraries specified on the command line to find missing symbols, and only searches for those missing symbols in the following libs. Thus, as -lssl needs symbols from -lcrypto, it needs to come before -lcrypto. And globally, we do *not* append new libraries, we prepend them. Signed-off-by: "Yann E. MORIN" diff -durN a/configure.in b/configure.in --- a/configure.in 2014-10-16 11:12:08.000000000 +0200 +++ b/configure.in 2015-05-30 15:44:25.540329788 +0200 @@ -133,12 +133,14 @@ [AC_MSG_ERROR([header file is required for OpenSSL, use --with-openssl-path=PATH])] ) AC_CHECK_LIB([crypto],[CRYPTO_new_ex_data], - [SSL_LIBADD="$SSL_LIBADD -lcrypto"], - [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])] + [SSL_LIBADD="-lcrypto $SSL_LIBADD"], + [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])], + [$SSL_LIBADD] ) AC_CHECK_LIB([ssl],[SSL_library_init], - [SSL_LIBADD="$SSL_LIBADD -lssl"], - [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])] + [SSL_LIBADD="-lssl $SSL_LIBADD"], + [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])], + [$SSL_LIBADD] ) AC_SUBST(SSL_LIBADD) fi