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Use AC_CHECK_LIB before PKG_CHECK_MODULES for openssl

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Previously, the code was using PKG_CHECK_EXISTS before PKG_CHECK_MODULES,
(to cater to OpenBSD systems that include openssl by default but without
a .pc file). But this meant that systems that didn't have openssl installed
at all would not get any error message at configure time.

Now, if the SHA1_Init function is found in -lcrypto without any additional
flags, then that's used. Otherwise, pkg-config is used to find the right
flags to link against libcrypto. And if that fails, a nice error message
is now generated.
This commit is contained in:
Carl Worth 2008-06-30 13:16:49 -07:00
parent 76576c87b0
commit 6447f80c17
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -1110,7 +1110,7 @@ if test "x$SHA1_LIB" = "x" ; then
[Define to use libmd SHA1 functions instead of OpenSSL libcrypto])])
fi
if test "x$SHA1_LIB" = "x" ; then
PKG_CHECK_EXISTS([openssl],
AC_CHECK_LIB([crypto], [SHA1_Init], [],
[PKG_CHECK_MODULES([OPENSSL], [openssl],
[OPENSSL_LIB_FLAGS=`$PKG_CONFIG --libs-only-L --libs-only-other openssl`])])
SHA1_LIB="$OPENSSL_LIB_FLAGS -lcrypto"