Thanks! I think I'll opt for the newer compiler! //SIGNED// John D. Namias, MCP, Security+ Planned Systems International (PSI) AFLCMC/HIBD Medical Resource Systems Database Administrator Comm. - 334-416-3686 DSN - 596-3686 eMail - John.Namias.ctr@xxxxxxxxx OUR POLICY REQUIRES ENCRYPTION OF ANY E-MAIL CONTAINING PROTECTED HEALTH INFORMATION (PHI) or PERSONALLY INDENTIFIABLE INFORMATION (PII). DO NOT SEND PHI/PII TO ME WITHOUT ENCRYPTING. -----Original Message----- From: Jonathan Wakely [mailto:jwakely.gcc@xxxxxxxxx] Sent: Friday, February 03, 2017 10:56 AM To: NAMIAS, JOHN D CTR USAF AFMC AFLCMC/HIBD <john.namias.ctr@xxxxxxxxx> Cc: gcc-help@xxxxxxxxxxx; PossumJohn@xxxxxxxxxxx Subject: Re: GCC Compiling Issue On 3 February 2017 at 16:09, NAMIAS, JOHN D CTR USAF AFMC AFLCMC/HIBD wrote: > Hello all! > > I apologize if this is posted in the wrong place. I am attempting to compile OpenSSL 1.1.od so that I can eventually install Apache 2.4.25. I have run the " ./Configure solaris64-sparcv9-gcc" and followed up with the "make". During the "make" process I see "gcc: unrecognized option `-pthread'" at the end of each command-line processed. (see below) I should tell y'all that this is a Solaris 10 OS on a Sun server. The version of GCC that is installed is GCC 3.4.3 (also below). My question is -- Will upgrading to the newest version of GCC correct these errors? If not -- do you have any suggestions on how to correct them? Ancient versions of GCC for Solaris only understand -pthreads not -pthread. More recent releases (anything since GCC 4.1 onwards) accept either option, with the same meaning. So you could either adjust the build process to use -pthreads instead of -pthread, or update to a newer GCC.