On 8 February 2009 Nathan Beyer wrote: > Isn't "/usr/lib/libstdc++.so.6" generally a symlink to the specific > version folder that's currently the default?
Nope. It depends very much on the distro layout. The most likely place to find libc is /lib where you can execute (you can actually execute this lib) /lib/libc.so* and see the version. > Regardless, moving to v6 as the default seems to make sense to me - > this seems to be the default on the latest distribution releases that > I've seen. With this I agree. Version 6 has been the default for a time I can't remember and those who still use v5 might as well switch after all. > On Sat, Feb 7, 2009 at 5:28 AM, Gregory Shimansky <[email protected]> wrote: > > On 7 February 2009 Mark Hindess wrote: > >> Perhaps we should make use.libstdc++6=true the default? Or maybe even > >> try a little harder to make a better guess at the default with a patch > >> like the one appended? > > > > Hmm it is not this easy. The library libstdc++ belongs to gcc, and its > > location depends on gcc version (gcc may be even installed in a > > non-standard location). Guessing it is not easy without configure script. > > Here's what I get when I execute "locate libstdc++.so.6" on Gentoo Linux: > > > > /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/32/libstdc++.so.6 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/32/libstdc++.so.6.0.3 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/libstdc++.so.6 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/libstdc++.so.6.0.3 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/32/libstdc++.so.6 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/32/libstdc++.so.6.0.8 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/libstdc++.so.6 > > /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/libstdc++.so.6.0.8 > > > > The naming of path like "x86_64-pc-linux-gnu" is very platform dependent > > as well. > > > > Someone might even want to use Intel compiler to build Harmony, I recall > > icc used to work at some point of time and produced quite an optimized > > code. > > > >> Index: working_classlib/make/properties.xml > >> =================================================================== > >> --- working_classlib/make/properties.xml (revision 741852) > >> +++ working_classlib/make/properties.xml (working copy) > >> @@ -313,6 +313,12 @@ > >> </condition> > >> <property name="hy.portlib.stubs" value="false" /> > >> > >> + <condition property="use.libstdc++6" value="true"> > >> + <and> > >> + <isset property="is.linux" /> > >> + <available file="/usr/lib/libstdc++.so.6" type="file" /> > >> + </and> > >> + </condition> > >> <condition property="hy.libstdc++.suffix" value=".libstdc++6"> > >> <isset property="use.libstdc++6"/> > >> </condition> > >> Index: common_resources/make/properties.xml > >> =================================================================== > >> --- common_resources/make/properties.xml (revision 741852) > >> +++ common_resources/make/properties.xml (working copy) > >> @@ -69,6 +69,12 @@ > >> <property name="hy.test.timeout" value="900000" /> > >> <property name="hy.test.vmargs" value="" /> > >> > >> + <condition property="use.libstdc++6" value="true"> > >> + <and> > >> + <isset property="is.linux" /> > >> + <available file="/usr/lib/libstdc++.so.6" type="file" /> > >> + </and> > >> + </condition> > >> <condition property="hy.platform.suffix" value=".libstdc++6"> > >> <isset property="use.libstdc++6"/> > >> </condition> > > > > -- > > Gregory -- Gregory
