#753 Cannot find openssl when specified --with-ssl

[Normand Savard]

Curl 7.17 and 7.18 cannot find openssl if it installed under a user specified directory. I tested with Curl 7.18.2 and got the same issue.

This issue was found when building a fgs module (installer for linux). See http://bugzilla.maptools.org/show_bug.cgi?id=1863

I found a similar issue in the tracker and applied the suggested fix (2008-01-15 21:39 by dfandrich) but it didn't solve this issue:
http://sourceforge.net/tracker/index.php?func=detail&aid=1871649&group_id=976&atid=100976

[Normand Savard]

Curl config.log file

[Dan Fandrich]

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It looks like only static OpenSSL libraries are available, which I don't think curl supports (at least when configuring this way). Try configuring again while setting PKG_CONFIG_PATH appropriately (probably PKG_CONFIG_PATH=/home/fgs/fgs-dev/built/openssl/lib/pkgconfig). The output of the command:

env PKG_CONFIG_PATH=/home/fgs/fgs-dev/built/openssl/lib/pkgconfig pkg-config --libs libssl

should provide all the libraries needed to link with OpenSSL. If not, then it's an OpenSSL bug.

[Normand Savard]

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I pasted here the output of the pkg-config command and the configure script (part of):

fgs@debian:~/fgs-dev$ export PKG_CONFIG_PATH=/home/fgs/fgs-dev/built/openssl/lib/pkgconfig/
fgs@debian:~/fgs-dev$ pkg-config --libs libssl
-L/home/fgs/fgs-dev/built/openssl/lib -lssl -lcrypto -ldl

fgs@debian:~/fgs-dev$
fgs@debian:~/fgs-dev/src/curl-7.18.2$ ./configure --prefix=/home/fgs/fgs-dev/built/curl --with-ssl=/home/fgs/fgs-dev/built/openssl --without-libidn
checking whether to enable maintainer-specific portions of Makefiles... no
checking for sed... /bin/sed
checking for ar... ar
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no

...

checking whether to use libgcc... no
checking for lber.h... no
checking for ldap.h... no
checking for ldapssl.h... no
checking for ldap_ssl.h... no
checking for LDAP libraries... cannot find LDAP libraries
configure: WARNING: Cannot find libraries for LDAP support: LDAP disabled
checking whether to enable ipv6... yes
checking non-blocking sockets style... O_NONBLOCK
checking if argv can be written to... yes
checking if Kerberos4 support is requested... no
checking if SPNEGO support is requested... no
checking if GSSAPI support is requested... no
checking for gdi32... no
checking for CRYPTO_lock in -lcrypto... yes
checking for SSL_connect in -lssl... no
checking for ssl with RSAglue/rsaref libs in use... checking for SSL_connect in -lssl... (cached) no
no
configure: error: OpenSSL libs and/or directories were not found where specified!

[Normand Savard]

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I confirm that when openssl is built as a shared module, Curl configure script runs correctly

...
checking if argv can be written to... yes
checking if Kerberos4 support is requested... no
checking if SPNEGO support is requested... no
checking if GSSAPI support is requested... no
checking for gdi32... no
checking for CRYPTO_lock in -lcrypto... yes
checking for SSL_connect in -lssl... yes
checking openssl/x509.h usability... yes
checking openssl/x509.h presence... yes
checking for openssl/x509.h... yes
checking openssl/rsa.h usability... yes

...

configure: Configured to build curl/libcurl:

curl version: 7.18.2
Host setup: i686-pc-linux-gnu
Install prefix: /home/fgs/fgs-dev/built/curl
Compiler: gcc
SSL support: enabled (OpenSSL)
SSH support: no (--with-libssh2)
zlib support: enabled
krb4 support: no (--with-krb4*)
GSSAPI support: no (--with-gssapi)
SPNEGO support: no (--with-spnego)
c-ares support: no (--enable-ares)
ipv6 support: enabled
IDN support: no (--with-libidn)
Build libcurl: Shared=yes, Static=yes
Built-in manual: enabled
Verbose errors: enabled (--disable-verbose)
SSPI support: no (--enable-sspi)
ca cert bundle: no
ca cert path: no
LDAP support: no (--enable-ldap / --with-ldap-lib / --with-lber-lib)
LDAPS support: no (--enable-ldaps)

[Dan Fandrich]

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Try setting PKG_CONFIG_PATH correctly but configuring with "--with-ssl" (without giving a path). The configure script ignores pkg-config if given a path to an OpenSSL directory.

[Normand Savard]

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Based on the last comment I removed the path linked with "--with-ssl" and the configure script executed to the end. Thanks.

[Dan Fandrich]

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I've now documented the PKG_CONFIG_PATH approach to configuring OpenSSL in the INSTALL file.

[SourceForge Robot]

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