[Bug 109729] iris build failure on i386

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109729

--- Comment #1 from leozinho29_eu at hotmail.com ---
if editing the meson.build file to remove that Werror, it fails again later:

root at ubuntui386:~/mesa# PKG_CONFIG_PATH="/usr/local/mesa32/lib/pkgconfig" ninja
-C build
ninja: Entering directory `build'
[4/4] Linking target src/gallium/targets/dri/libgallium_dri.so.
FAILED: src/gallium/targets/dri/libgallium_dri.so 
/usr/bin/g++-8  -o src/gallium/targets/dri/libgallium_dri.so
'src/gallium/targets/dri/gallium_dri at sha/target.c.o' -Wl,--no-undefined
-Wl,--as-needed -shared -fPIC -Wl,--start-group -Wl,-soname,libgallium_dri.so
-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall
-Wl,-Bsymbolic-functions -Wl,-z,relro src/mesa/libmesa_gallium.a
src/compiler/glsl/libglsl.a src/compiler/glsl/glcpp/libglcpp.a
src/util/libmesa_util.a src/compiler/nir/libnir.a src/compiler/libcompiler.a
src/mesa/libmesa_sse41.a src/mesa/drivers/dri/common/libdricommon.a
src/mesa/drivers/dri/common/libmegadriver_stub.a
src/gallium/state_trackers/dri/libdri.a src/gallium/auxiliary/libgalliumvl.a
src/gallium/auxiliary/libgallium.a src/mapi/shared-glapi/libglapi.so.0.0.0
src/gallium/auxiliary/pipe-loader/libpipe_loader_static.a
src/loader/libloader.a src/util/libxmlconfig.a
src/gallium/winsys/sw/null/libws_null.a src/gallium/winsys/sw/wrapper/libwsw.a
src/gallium/winsys/sw/dri/libswdri.a
src/gallium/winsys/sw/kms-dri/libswkmsdri.a
src/gallium/drivers/llvmpipe/libllvmpipe.a
src/gallium/drivers/softpipe/libsoftpipe.a src/gallium/drivers/iris/libiris.a
src/gallium/drivers/iris/liblibiris_gen80.a
src/gallium/drivers/iris/liblibiris_gen90.a
src/gallium/drivers/iris/liblibiris_gen100.a
src/gallium/drivers/iris/liblibiris_gen110.a src/intel/common/libintel_common.a
src/intel/isl/libisl.a src/intel/isl/libisl_gen40.a
src/intel/isl/libisl_gen50.a src/intel/isl/libisl_gen60.a
src/intel/isl/libisl_gen70.a src/intel/isl/libisl_gen75.a
src/intel/isl/libisl_gen80.a src/intel/isl/libisl_gen90.a
src/intel/isl/libisl_gen100.a src/intel/isl/libisl_gen110.a
src/intel/isl/libisl_tiled_memcpy.a src/intel/isl/libisl_tiled_memcpy_sse41.a
src/intel/compiler/libintel_compiler.a src/intel/dev/libintel_dev.a
src/intel/blorp/libblorp.a src/gallium/winsys/iris/drm/libiriswinsys.a -pthread
-Wl,--gc-sections -Wl,--version-script
/root/mesa/src/gallium/targets/dri/dri.sym -Wl,--dynamic-list
/root/mesa/src/gallium/targets/dri/../dri-vdpau.dyn -lexpat -ldrm
-Wl,--end-group -L/usr/lib/llvm-7/lib -lLLVM-7 -lz -lm -ldrm -ldrm -ldrm -ldrm
-L/usr/lib/llvm-7/lib -lLLVM-7 -lunwind -ldl -lm -lsensors -ldrm -ldrm -lexpat
-lm -lz -lm -ldrm -L/usr/lib/llvm-7/lib -lLLVM-7 -ldrm -ldrm -ldrm -ldrm -ldrm
-lexpat -ldrm '-Wl,-rpath,$ORIGIN/../../../mapi/shared-glapi'
-Wl,-rpath-link,/root/mesa/build/src/mapi/shared-glapi  
src/gallium/drivers/iris/libiris.a(iris_bufmgr.c.o): In function
`gen_clflush_range':
/root/mesa/build/../src/intel/common/gen_clflush.h:37: undefined reference to
`__builtin_ia32_clflush'
src/gallium/drivers/iris/libiris.a(iris_bufmgr.c.o): In function
`gen_invalidate_range':
/root/mesa/build/../src/intel/common/gen_clflush.h:64: undefined reference to
`__builtin_ia32_clflush'
/root/mesa/build/../src/intel/common/gen_clflush.h:65: undefined reference to
`__builtin_ia32_mfence'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

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