[Mesa-stable] [PATCH] configuire.ac: honour LLVM_LIBDIR when linking against LLVM

[Emil Velikov]

From: Emil Velikov <emil.velikov at collabora.com>

Currently if one uses a non-default prefix, the path won't get
propagated and we'll fail at link-time.

A very quick and easy example is to install to /usr/local.
At this point, llvm-config will be picked even without the
--with-llvm-prefix, but regardless of the latter linking will fail.

Currently people can workaround that via LD_LIBRARY_PATH.

Cc: "12.0 13.0" <mesa-stable at lists.freedesktop.org>
Cc: Tom Stellard <thomas.stellard at amd.com>
Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
---
Can a brave soul, familiar with llvm, help us stop the manual
llvm-config parsing and prep llvm.pc +
llvm-{$component-foo,$component-bar}.pc ?
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index d215b63..7d988f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1986,8 +1986,6 @@ AC_SUBST([LLVM_BINDIR])
 AC_SUBST([LLVM_CFLAGS])
 AC_SUBST([LLVM_CPPFLAGS])
 AC_SUBST([LLVM_CXXFLAGS])
-AC_SUBST([LLVM_LIBDIR])
-AC_SUBST([LLVM_LIBS])
 AC_SUBST([LLVM_LDFLAGS])
 AC_SUBST([LLVM_INCLUDEDIR])
 AC_SUBST([LLVM_VERSION])
@@ -2540,7 +2538,9 @@ if test "x$MESA_LLVM" != x0; then
             LLVM_LIBS="$LLVM_LIBS `$LLVM_CONFIG --system-libs`"
         fi
     fi
+    LLVM_LIBS="$LLVM_LIBDIR $LLVM_LIBS"
 fi
+AC_SUBST([LLVM_LIBS])
 
 AM_CONDITIONAL(HAVE_GALLIUM_SVGA, test "x$HAVE_GALLIUM_SVGA" = xyes)
 AM_CONDITIONAL(HAVE_GALLIUM_I915, test "x$HAVE_GALLIUM_I915" = xyes)
-- 
2.10.0