[Openvpn-users] configure: error: OpenSSL Crypto headers not found

[fxper]

I wasn't able to find a suitable answer in the
archives, but looks like I'm not alone in having this
problem.

My configure breaks with "configure: error: OpenSSL
Crypto headers not found"

This occured on Debian, both when I had the deb
openssl package, and also when I removed that package
and installed openssl from source.

I notice that there is a way to tell ./configure where
the headers are, with the ./configure
--with-ssl-headers= command, and I've tried:
./configure
--with-ssl-headers=/root/openssl-0.9.7d/crypto/
and
./configure
--with-ssl-headers=/usr/local/ssl/include/openssl/

but neither worked. How can I figure out where these
headers are, and if I have them, and where to get them
if not?

Thanks!



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[Dick St.Peters]

Post by fxper
My configure breaks with "configure: error: OpenSSL
Crypto headers not found"
This occured on Debian, both when I had the deb
openssl package, and also when I removed that package
and installed openssl from source.
I notice that there is a way to tell ./configure where
the headers are, with the ./configure
./configure
--with-ssl-headers=/root/openssl-0.9.7d/crypto/
and
./configure
--with-ssl-headers=/usr/local/ssl/include/openssl/
but neither worked. How can I figure out where these
headers are, and if I have them, and where to get them
if not?

If you're running into the same problem I did, configure is misleading
you about what the real problem is. Try

export LDFLAGS="-lkrb5"
./configure

If that still doesn't work, find the actual test that configure runs
(look in config.log), run the steps manually, and work backwards to
find what it's looking for.

--
Dick St.Peters, ***@NetHeaven.com
Gatekeeper, NetHeaven, Saratoga Springs, NY

[fxper]

Post by Dick St.Peters
If you're running into the same problem I did,
configure is misleading
you about what the real problem is. Try
export LDFLAGS="-lkrb5"
./configure

That actually made it worse. After I set it back to
"", I did get a bit farther after looking in the
config.log though.

If I do: ./configure
--with-ssl-headers=/usr/local/ssl/include/ it gets
past that test, but then breaks on the next one.

configure: checking for OpenSSL Crypto Library and
Header files...
checking openssl/evp.h usability... yes
checking openssl/evp.h presence... yes
checking for openssl/evp.h... yes
checking for EVP_CIPHER_CTX_init in -lcrypto... no
configure: error: OpenSSL Crypto library not found.

in config.log i have:
configure:8232: checking for openssl/evp.h
configure:8239: result: yes
configure:8244: checking for EVP_CIPHER_CTX_init in
-lcrypto
configure:8275: gcc -o conftest -g -O2
-I/usr/local/ssl/include/ -I. conftest.c -lcrypto
-llzo >&5
/usr/bin/ld: cannot find -lcrypto
collect2: ld returned 1 exit status
configure:8278: $? = 1
configure: failed program was:
| #line 8251 "configure"
<snip>

But I don't know what I need to do to get -lcrypto
found.

ideas?

Thanks!



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[fxper]

Aha. using ./configure
--with-ssl-headers=/usr/local/ssl/include/
--with-ssl-lib=/usr/local/ssl/lib/

fixed it.

Thanks all.

Do you have OpenSSL installed properly? Are there
any files
named /usr/local/lib/libcrypto* ?
On Tue, Sep 21, 2004 at 10:27:14PM -0700, fxper

On Tue, Sep 21, 2004 at 08:05:34PM -0700, fxper

Post by fxper
configure:8232: checking for openssl/evp.h
configure:8239: result: yes
configure:8244: checking for

EVP_CIPHER_CTX_init

in

Post by fxper
-lcrypto
configure:8275: gcc -o conftest -g -O2
-I/usr/local/ssl/include/ -I. conftest.c

-lcrypto

Post by fxper
-llzo >&5
/usr/bin/ld: cannot find -lcrypto

Assuming that you have the OpenSSL libraries
installed in /usr/local,
something like this?
CFLAGS="-L/usr/local/lib" ./configure --xxx

--yyy

[...]
Or maybe that should be "LDFLAGS=..."

Tried that...
configure:8244: checking for EVP_CIPHER_CTX_init

in

-lcrypto
configure:8275: gcc -o conftest -g -O2
-I/usr/local/ssl/include/ -I. -L/usr/local/lib
conftest.c -lcrypto -llzo >&5
/usr/bin/ld: cannot find -lcrypto
collect2: ld returned 1 exit status
configure:8278: $? = 1
| #line 8251 "configure"
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