[R] Problems installing RODBC as part of Rcmdr and as separate package

[John Sorkin]

Fedora 10
R 2.8.1

I hope someone can tell me the meaning of error I received trying to install RODBC and how I can get around the problem. 
n.b. The error originally occurred then I was installing Rcmdr. I then tried to install RODBC separately and received the same error.

checking sql.h usability... no
checking sql.h presence... no
checking for sql.h... no
checking sqlext.h usability... no
checking sqlext.h presence... no
checking for sqlext.h... no
configure: error: "ODBC headers sql.h and sqlext.h not found"
ERROR: configuration failed for package 'RODBC'
** Removing '/usr/lib/R/library/RODBC'

The downloaded packages are in
	/tmp/RtmpA1nKF2/downloaded_packages
Updating HTML index of packages in '.Library'
Warning message:
In install.packages("RODBC") :
  installation of package 'RODBC' had non-zero exit status


John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
Baltimore VA Medical Center GRECC,
University of Maryland School of Medicine Claude D. Pepper OAIC,
University of Maryland Clinical Nutrition Research Unit, and
Baltimore VA Center Stroke of Excellence

University of Maryland School of Medicine
Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524

(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
jsorkin at grecc.umaryland.edu
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