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/usr/lib/gcc-cross/arm-linux-gnueabi/4.9/libsanitizer.spec is in gcc-4.9-arm-linux-gnueabi 4.9.3-13ubuntu2cross1.

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# This spec file is read by gcc when linking.  It is used to specify the
# standard libraries we need in order to link with various sanitizer libs.

*link_libasan: -lpthread -ldl -lm

*link_libtsan: -lpthread -ldl -lm

*link_libubsan: -lpthread -ldl -lm

*link_liblsan: -lpthread -ldl -lm