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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have recently built a nice little embedded Linux under Cygwin following CLFS guidelines (Current 1.x).<o:p></o:p></p><p class=MsoNormal>I used GCC-4.6.1 instead of GCC-4.6.0 and CLFS patches.<o:p></o:p></p><p class=MsoNormal>I hope somebody find these notes useful.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>GMP, MPFR, MPC and PPL libraries configuration calls should be run with <b>--disable-static --enable-shared</b> options<b><span style='color:#C00000'>.</span></b><o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>MPC-0.9 configure script has some Cygwin-related bug. Instead of finding the bug I just fixed mpc-0.9/src/Makefile:<br><span style='font-family:"System Fixed"'>In place of DEFS = -DHAVE_CONFIG_H you should use DEFS = -DHAVE_CONFIG_H <b>-D__MPC_WITHIN_MPC</b></span><o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Before EGLIBC build:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Convert your Windows NTFS to case-sensitive mode (<a href="http://www.cygwin.com/cygwin-ug-net/using-specialnames.html">http://www.cygwin.com/cygwin-ug-net/using-specialnames.html</a>)<br>Some 3-d party Windows software might grossly misbehave after that (e.g. Garmin USB driver blue-screened my PC).<br>I settled on a VM with fresh installation of Win7 plus Cygwin.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1;text-autospace:none'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Rename Cygwin’s native <span style='font-family:"System Fixed"'>g++, cc, c++ files in C:\cygwin\bin to c++.exe.saved, cc.exe.saved, g++.exe.saved.</span><o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1;text-autospace:none'><![if !supportLists]><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span style='font-family:"System Fixed"'>During EGLIBC build and installation it will fail on Cygwin-native compilation of sunrpc/cross-rpcgen.exe and timezone/cross-zic.exe (because of Cygwin’s gcc deficiencies?). <br>I am sure it’s fixable in Makefiles and scripts but I did not care to do it right and just temporarily commented out the <br>whole</span><span style='font-size:12.0pt;font-family:"System Fixed"'> </span><span style='font-family:"System Fixed";color:red'>#ifndef</span><span style='font-family:"System Fixed";color:black'> __u_char_defined construct </span><span style='font-family:"System Fixed"'> in eglibc-2.13/sunrpc/rpc/types.h and linked with –lintl option. <br>If you do it this way, don’t forget to uncomment the above construct when your are done!</span><o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1;text-autospace:none'><![if !supportLists]><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>After EGLIBC installation rename <span style='font-family:"System Fixed"'>g++, cc, c++ to c++.exe.saved, cc.exe.saved, g++.exe.saved files to g++, cc, c++</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>One more suggestion (it’s purely a matter of taste, I guess): instead of CLFS-recommended values for environment variables I am using the following definitions and no root mounts:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Courier New"'>export CLFS_HOST="i686-cross-cygwin"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Courier New"'>export CLFS_TARGET="i686-pc-linux-gnu"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Courier New"'>export CLFS=/opt/crosstool/gcc-4.6.1-eglibc-2.13/$CLFS_TARGET<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Courier New"'>export TOOLS=$CLFS/$CLFS_TARGET<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>I had to change all CLFS snippets accordingly too.<o:p></o:p></p><p class=MsoNormal>This approach creates a nicely encapsulated /opt/crosstool/gcc-4.6.1-eglibc-2.13 folder with everything related to the build and this folder is easily transferrable (copy&paste) between different windows workstations.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Serge<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>