 Hi R,
I tried to install one local source package---"qtl" into R, but failed with the following message. I am using Macbook OS 10.8.3 with Xcode 4.6.1.

ld: warning: directory not found for option '-L/usr/local/lib'
ld: library not found for -lgfortran
collect2: ld returned 1 exit status
make: *** [qtl.so] Error 1
ERROR: compilation failed for package ‘qtl’
* removing ‘/Library/Frameworks/R.framework/Versions/2.15/Resources/library/qtl’
* restoring previous ‘/Library/Frameworks/R.framework/Versions/2.15/Resources/library/qtl’

Any comments are appreciated.

Liu

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