[Bug 1631] New: ./configure errors on missing headers are misleading on Linux

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1631

           Summary: ./configure errors on missing headers are misleading
                    on Linux
           Product: Portable OpenSSH
           Version: 5.2p1
          Platform: ix86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Build system
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: pepper at reppep.com


On Linux, OpenSSH's configure script complains that zlib and libcrypto
are missing even when they are installed -- what it actually needs are
the corresponding -devel RPMs.

Since the problem is absence of the headers, and they're in different
RPMs on Linux, please improve the errors to mention 'headers' -- -devel
RPMs are too specific unless you wanted to special-case the relevant
Linux flavors.

[root at si-node openssh]# autoreconf
[root at si-node openssh]# ./configure && make

...

checking for deflate in -lz... no
configure: error: *** zlib missing - please install first or check
config.log ***
[root at si-node openssh]# rpm -qa|grep zlib
zlib-1.2.3-3
[root at si-node openssh]# rpm -ql zlib
/usr/lib/libz.so.1
/usr/lib/libz.so.1.2.3
/usr/share/doc/zlib-1.2.3
/usr/share/doc/zlib-1.2.3/README
[root at si-node openssh]# uname -a
Linux si-node.mskcc.org 2.6.18-128.2.1.el5 #1 SMP Tue Jul 14 06:39:56
EDT 2009 i686 i686 i386 GNU/Linux
[root at si-node openssh]# cat /etc/redhat-release 
CentOS release 5.3 (Final)

I installed zlib-devel-1.2.3-3.i386.rpm, then got past zlib to a
similar error about openssl:

configure: error: *** Can't find recent OpenSSL libcrypto (see
config.log for details) ***
[root at si-node openssh]# rpm -qa|grep crypto

The fix was to install openssl-devel-0.9.8e-7.el5.i386.rpm.

This was in HEAD from today.

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