Date: Wed, 26 Jun 2013 19:02:02 -0500 From: Kevin Day <toasty@dragondata.com> To: "freebsd-hackers@freebsd.org Hackers" <freebsd-hackers@freebsd.org> Subject: Can't use gcc in a clang built world Message-ID: <DB5E076C-7DF1-47CD-977C-F36F7B1B1A08@dragondata.com>
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Are you supposed to be able to use gcc to build userland binaries if you =
built world with clang?
I'm on -CURRENT as of a few days ago (using armv6 but i'm not sure if =
that matters). If I buildworld with clang, then attempt to compile some =
userland binaries with gcc, I'll get missing symbols like:
CCLD pcretest
./.libs/libpcre.so: undefined reference to `__clear_cache'
*** [pcretest] Error code 1
If I look at /lib/libgcc that symbol isn't there:
# readelf -a /lib/libgcc_s.so.1 | grep clear
#
If I rebuild /usr/src/gnu/libgcc with gcc, then try again it works. The =
symbol is now there:
# readelf -a /lib/libgcc_s.so.1 | grep clear
94: 00003b94 48 FUNC GLOBAL DEFAULT 12 =
__clear_cache@@GCC_3.0
#
I can build pcre correctly. I thought one of the goals was to be able to =
use both interchangeably on the same system. Is this broken, or one of =
the casualties of making clang default now? Do we need two different =
versions of some libraries depending on which compiler is being used?
-- Kevin
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