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autoconf: Fix build of dri symbols test to not manually link expat.

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AC_CHECK_LIB has this nasty behavior, like the cflags tests, of
automatically putting the tested value into the global LIBS on
success.  This caused -lexpat to end up in LIBS, but without the
--with-expat dir, so my 32-bit build on a 64 system using expat from a
custom prefix could only find the system expat and fail to link on the
one current consumer of the LIBS variable: the dri driver test link.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-01-18 11:27:24 -08:00
parent c25e5300cb
commit 36473395f1
1 changed files with 2 additions and 0 deletions
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2
configure.ac
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@ -1231,8 +1231,10 @@ if test "x$enable_dri" = xyes; then
EXPAT_LIB="-L$withval/$LIB_DIR -lexpat"
])
AC_CHECK_HEADER([expat.h],[],[AC_MSG_ERROR([Expat required for DRI.])])
save_LIBS="$LIBS"
AC_CHECK_LIB([expat],[XML_ParserCreate],[],
[AC_MSG_ERROR([Expat required for DRI.])])
LIBS="$save_LIBS"
fi
# libdrm is required for all except swrast