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configure: check if OpenSSL linking wants -ldl

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To make it easier to link with static versions of OpenSSL, the configure
script now checks if -ldl is needed for linking.

Help-by: TJ Saunders
This commit is contained in:
Daniel Stenberg 2015-07-25 10:52:49 +02:00
parent c5d060cab4
commit a284b0ebc4
1 changed files with 40 additions and 0 deletions
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40
configure.ac
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@ -1509,6 +1509,46 @@ if test "$curl_ssl_msg" = "$init_ssl_msg" && test X"$OPT_SSL" != Xno; then
])
if test X"$HAVECRYPTO" = X"yes"; then
AC_MSG_CHECKING([OpenSSL linking without -ldl])
saved_libs=$LIBS
AC_TRY_LINK(
[
#include <openssl/evp.h>
],
[
SSLeay_add_all_algorithms();
],
[
AC_MSG_RESULT(yes)
LIBS="$saved_libs"
],
[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([OpenSSL linking with -ldl])
LIBS="-ldl $LIBS"
AC_TRY_LINK(
[
#include <openssl/evp.h>
],
[
SSLeay_add_all_algorithms();
],
[
AC_MSG_RESULT(yes)
LIBS="$saved_libs -ldl"
],
[
AC_MSG_RESULT(no)
LIBS="$saved_libs"
]
)
]
)
fi
if test X"$HAVECRYPTO" = X"yes"; then
dnl This is only reasonable to do if crypto actually is there: check for
dnl SSL libs NOTE: it is important to do this AFTER the crypto lib