<html><head></head><body><div style="color:#000; background-color:#fff; font-family:標楷體, dfkai-sb;font-size:16px"><div id="yui_3_16_0_ym19_1_1494207424204_7474">Hello,</div><div id="yui_3_16_0_ym19_1_1494207424204_7474"><br></div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">I created a few standalone programs that use a DMDA structure, calculate and create matrices. However, now that I am trying to combine them using a main and using the files as modules, the header files seem to consistently conflict. I am currently only trying to compile 3 files out of the several that i have completed. </div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">when trying to compile 2 modules that i have, where the 1st module uses the 2nd module. </div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">Common errors that i am getting is the </div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">"symbol 'xxx' ... conflicts with symbol from module 'utils', use-associated at ..."</div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">and</div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">"Cannot change attributes of USE-associated symbol xxxx at"</div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">Is there a method to go about this? thank you.</div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1494207424204_7474" dir="ltr">-Tina</div></div></body></html>