<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1516063303451_11619"><br></div><div id="yui_3_16_0_ym19_1_1516063303451_11619">Greetings.</div><div id="yui_3_16_0_ym19_1_1516063303451_11619"><br></div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr">I am trying to compile a Fortran code using the command of ncargf90. It returned an error message (see the attached messages). I do not see any file named xcrun on my computer. Would you give me some help on how to resolve this issue? Thank you.</div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr">Best regards,</div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr">Yuanfu</div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr"><br></div><div style="margin-top: 0px; margin-bottom: 0px; font-stretch: normal; font-size: 14px; line-height: normal; font-family: Menlo;" id="yui_3_16_0_ym19_1_1516063303451_11675"><span style="font-variant-ligatures: no-common-ligatures" id="yui_3_16_0_ym19_1_1516063303451_11676">ncargf90 heun.f90 </span></div><div style="margin-top: 0px; margin-bottom: 0px; font-stretch: normal; font-size: 14px; line-height: normal; font-family: Menlo;" id="yui_3_16_0_ym19_1_1516063303451_11677"><span style="font-variant-ligatures: no-common-ligatures" id="yui_3_16_0_ym19_1_1516063303451_11678">gfortran -fPIC -fno-range-check -m64 -Wall -fopenmp -O heun.f90 -L/Users/xieyuanfu/plotting/ncl_ncarg-6.4.0-MacOS_10.12_64bit_gnu530/lib -L/opt/X11/lib -lncarg -lncarg_gks -lncarg_c -lXpm -lX11 -lXext -lcairo -lfontconfig -lpixman-1 -lfreetype -lexpat -lpng -lz -lXrender -lbz2</span></div><div id="yui_3_16_0_ym19_1_1516063303451_11619" dir="ltr">
</div><div style="margin-top: 0px; margin-bottom: 0px; font-stretch: normal; font-size: 14px; line-height: normal; font-family: Menlo;" dir="ltr" id="yui_3_16_0_ym19_1_1516063303451_11679"><span style="font-variant-ligatures: no-common-ligatures" id="yui_3_16_0_ym19_1_1516063303451_11680">xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun</span></div></div></body></html>