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Im looking for an stunnel 5.x RPM for Centos 6.5 so I can get TLS1.2 support. Ive looked everywhere, but cannot find one. Ive tried downloading and compiling, as per another question on here (title: Stunnel 5.4 on Centos ), and followed all the instructions, but am running into compile errors.

The command is: rpmbuild -ta stunnel-5.46.tar.gz

Here is an example.

client.c:147: warning: expected [error|warning|ignored] after '#pragma GCC diagnostic'
client.c:180: warning: expected [error|warning|ignored] after '#pragma GCC diagnostic'
client.c:203: warning: expected [error|warning|ignored] after '#pragma GCC diagnostic'

/root/rpmbuild/BUILD/stunnel-5.46/src/client.c:487: undefined reference to `OpenSSL_version_num'
/root/rpmbuild/BUILD/stunnel-5.46/src/client.c:487: undefined reference to `OpenSSL_version_num'
/root/rpmbuild/BUILD/stunnel-5.46/src/client.c:488: undefined reference to `OpenSSL_version_num'

/root/rpmbuild/BUILD/stunnel-5.46/src/stunnel.c:897: undefined reference to `OpenSSL_version'
/root/rpmbuild/BUILD/stunnel-5.46/src/stunnel.c:899: undefined reference to `OpenSSL_version'
/root/rpmbuild/BUILD/stunnel-5.46/src/stunnel.c:900: undefined reference to `OpenSSL_version_num'
collect2: ld returned 1 exit status
make[2]: *** [stunnel] Error 1
make[2]: Leaving directory `/root/rpmbuild/BUILD/stunnel-5.46/src'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/root/rpmbuild/BUILD/stunnel-5.46/src'
make: *** [all-recursive] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.mbHOf4 (%build)

If anyone can help, Id be grateful.

regards Richard

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CentOS 6.9 - x86_64 .... stunnel-5.46

Setup the "rpmbuild environment" $HOME/rpms/ https://www.linuxquestions.org/questions/linux-software-2/need-rpm-package-for-php-version-5-2-7-and-up-on-redhat-5-1-a-766486/#13

$ rpm -i http://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/source/tree/Packages/s/stunnel-5.46-1.fc29.src.rpm

$ cd rpms/SPECS/                      // Edit stunnel.spec to :

: 37 : # BuildRequires: systemd       // comment out "BuildRequires: systemd"
: 69 : make                           // edit to "no-pie" ( to 'make' only )

$ rpmbuild -bb stunnel.spec
.
Wrote: /home/knudfl/rpms/RPMS/x86_64/stunnel-5.46-1.el6.x86_64.rpm
Wrote: /home/knudfl/rpms/RPMS/x86_64/stunnel-debuginfo-5.46-1.el6.x86_64.rpm

stunnel_make.log.txt https://www.dropbox.com/s/idn5i7mrn16feor/stunnel_make.log.txt?dl=0

Package stunnel-5.46-1.el6.x86_64.rpm https://drive.google.com/file/d/1Sd7TdW9GWJppN_jqsmVE9U68gBCxn3sr/view?usp=sharing

# yum install Downloads/stunnel-5.46-1.el6.x86_64.rpm


My install test ...

# yum install /home/knudfl/rpms/RPMS/x86_64/stunnel-5.46-1.el6.x86_64.rpm
.
.
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Updating   : stunnel-5.46-1.el6.x86_64
/var/tmp/rpm-tmp.82cIfj: line 2: fg: no job control
warning: %post(stunnel-5.46-1.el6.x86_64) scriptlet failed, exit status 1
Non-fatal POSTIN scriptlet failure in rpm package stunnel-5.46-1.el6.x86_64
  Cleanup    : stunnel-4.56-4.el6.x86_64
  Verifying  : stunnel-5.46-1.el6.x86_64
  Verifying  : stunnel-4.56-4.el6.x86_64

The "Non-fatal POSTIN scriptlet failure" is about %systemd_post stunnel.service → No systemd in CentOS 6. ... Note: Information like "line 2: fg: no job control" and warnings are not errors. Just information.

Installing the default stunnel-4.29 (again) : https://www.dropbox.com/s/tvhyt44br567jkr/stunnel_install.txt?dl=0

  • »» undefined reference to OpenSSL_version_num «« : Looks like you are using a corrupt or incomplete OpenSSL ? ... Is your openssl-devel updated to the latest update ? Or are you using a home made OpenSSL ? – Knud Larsen Jun 15 '18 at 13:03
  • Hi, thanks for your response.. Ive followed all the instructions, and get as far as compiling. However, Im getting similar erros as before.. Ive copied the output into a log file.. dropbox.com/s/ym77m7by6p5cziv/stunnel_build.log?dl=0 – Richard Legge Jun 15 '18 at 13:03
  • ok. thx. How do I check that? I did an openSSL update.. Ill do a clean reinstall. Which version should I be using? Ive installed openssl-1.0.1e-57.0.1.el6.x86_64 – Richard Legge Jun 15 '18 at 13:04
  • »» Which version should I be using «« : There is only one version : # yum install openssl-devel will do the update. – Knud Larsen Jun 15 '18 at 13:08
  • Thanks for your help. Ive removed and reinstalled openssl and openssl-devel using yum remove ... then reinstalled, but Im still getting the same set of errors: Packages are: openssl-1.0.1e-57.0.1.el6.x86_64 and openssl-devel-1.0.1e-57.0.1.el6.x86_64 – Richard Legge Jun 15 '18 at 13:14
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TLS v1.2 is already supported in stunnel 4.56 available with rhel/centos 6.x.

However, 6.5 is quite an old release, so you should move to 6.9 (or soon 6.10) to have latest openssl package.

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