Ian - Just wanted you to know that I got it working correctly. Thanks for your help. Dick __________________________________________________________ Richard Kouzes, Ph.D. Laboratory Fellow FUNDAMENTAL & COMPUTATIONAL SCIENCES DIRECTORATE Pacific Northwest National Laboratory 902 Battelle Boulevard P.O. Box 999, MSIN K7-36 Richland, WA 99352 USA Tel: 509-372-4858 Fax: 509-372-4969 Cell: 509-430-0873 Home: 509-628-0152 rkouzes@xxxxxxxx www.pnnl.gov webpages.charter.net/rkouzes ________________________________ From: Ian Lance Taylor <iant@xxxxxxxxxx> Date: Mon, 8 Aug 2011 14:07:38 -0700 To: "Kouzes, Richard T" <RKouzes@xxxxxxxx> Cc: <gcc-help@xxxxxxxxxxx> Subject: Re: gfortran "Kouzes, Richard T" <RKouzes@xxxxxxxx> writes: > I am new to this, and want to get gfortran running on my Mac. I downloaded and installed gfortran-4.6.1-i686-SnowLeopard > When I run it in a terminal window by typing "gfortran hello.f" on a small file I created, I get: > gfortran: error trying to exec 'as': execvp: No such file or directory > > Can you suggest what I am doing wrong? You need to install the assembler, which is not part of the gfortran package. On a Mac I believe you can do this by installing XCode. Ian