<span class="gmail_quote">Hi,<br></span><br>We are developing a Solaris10 based product which make use of GEOS 2.2.2, we compiled it under GCC4, but the performance is not so good comparing to another solution which does not make use of GEOS. But as some SUN&#39;s&nbsp;engineer said,&nbsp;the&nbsp;performance&nbsp;of&nbsp;Sun&nbsp;Studio&nbsp;compiled&nbsp;applications&nbsp;is&nbsp;tens&nbsp;of&nbsp;times&nbsp;better&nbsp;than&nbsp;GCC&nbsp;compiled&nbsp;apps&nbsp;on&nbsp;SPARC,&nbsp;so&nbsp;we&nbsp;want&nbsp;to&nbsp;take 
<br>another&nbsp;shot&nbsp;on&nbsp;GEOS&nbsp;to&nbsp;try&nbsp;if&nbsp;it&nbsp;is&nbsp;better&nbsp;than&nbsp;the&nbsp;other&nbsp;solution&nbsp;if&nbsp;we&nbsp;compile&nbsp;it&nbsp;with&nbsp;Sun&nbsp;Studio&nbsp;10.&nbsp;Now we met some problem compiling it with SUN Studio10, I&nbsp;have&nbsp;searched&nbsp;the&nbsp;list&nbsp;archive&nbsp;for&nbsp;a&nbsp;&quot;official&quot;&nbsp;list of supported compilers but failed, so would anybody please give such a list, so that 
<br>we&nbsp;can decide if it is applicable to compile it with Sun Studio10?&nbsp;<br><br>Thanks!<br><span class="sg"><br>Ryan<br> &nbsp;<br></span>