Re: ./configure with CC="ccache gcc" doesn't work

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+From: Michal Sojka <sojkam1@fel.cvut.cz>\r
+To: Andy Wingo <wingo@oblong.com>, notmuch@notmuchmail.org\r
+Subject: Re: ./configure with CC="ccache gcc" doesn't work\r
+In-Reply-To: <m3ei8897za.fsf@oblong.com>\r
+References: <m3ei8897za.fsf@oblong.com>\r
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+Date: Thu, 20 Jan 2011 10:50:08 +0100\r
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+\r
+Hi Andy,\r
+\r
+On Wed, 19 Jan 2011, Andy Wingo wrote:\r
+> On my Fedora 13 x86-64 system,\r
+>=20\r
+>     $ env | grep CC\r
+>     CC=3Dccache gcc\r
+>     $ ./configure --prefix=3D/usr --libdir=3D/usr/lib64\r
+>     [...]\r
+>     Checking for getline... No (will use our own instead).\r
+>     Checking for strcasestr... No (will use our own instead).\r
+>     Checking for rpath support... No (nothing to worry about).\r
+>     Checking for -Wl,--as-needed... No (nothing to worry about).\r
+>     [... success ...]\r
+>=20\r
+> The replacement strcasestr later causes build errors:\r
+>=20\r
+>     CXX -O2 lib/directory.o\r
+>     In file included from lib/notmuch-private.h:41,\r
+>                      from lib/directory.cc:22:\r
+>     /usr/include/string.h:371: error: new declaration =E2=80=98const char=\r
+* strcasestr(const char*, const char*)=E2=80=99\r
+>     compat/compat.h:46: error: ambiguates old declaration =E2=80=98char* =\r
+strcasestr(const char*, const char*)=E2=80=99\r
+>=20\r
+> But if I export CC=3Dgcc, things succeed:\r
+>=20\r
+>     Checking for getline... Yes.\r
+>     Checking for strcasestr... Yes.\r
+>     Checking for rpath support... Yes.\r
+>=20\r
+> And the build goes fine.\r
+>=20\r
+> I think the problem occurs due to the IFS setting in configure.  Not\r
+> sure what the right solution is; I am not married to having ccache in the\r
+> environment.  It's simply that this is what has worked in the past.  If\r
+> there is a better option for using ccache I'm happy to switch, as long\r
+> as it's globally applicable.\r
+\r
+Hmm, the IFS thing in configure seems annoying in this case. But you can\r
+create a little script containing\r
+\r
+  exec ccache gcc "$@"\r
+\r
+and set CC to the name of the script, cannot you?\r
+\r
+-Michal\r