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I am upgrading our toolchain from: crosstool-NG 1.3.1 binutils-2.17 gcc-4.2.1 To: crosstool-NG 1.18.0 binutils-2.20.1 gcc-4.4.6 Using the attached CT_NG config. We create a generic PPC toolchain because we want a single toolchain to create binaries that will run on both an e300 and e500 CPU. We do realize that we will lose some efficiency but we are willing to deal with that. The problem is that a test program crashes with Illegal instruction. Upon researching that, I found that the instruction "lwsync" is used and one of our CPU's (e500) does not support that instruction. That lwsync instruction is coming from libstdc++ (verified with "objdump -d -M ppc libstdc++.so|grep lwsync"). Our 4.2.1 based toolchain does not have any instances of lwsync in libstdc++. We have tried passing __NO_LWSYNC__ and _TARGET_NO_LWSYNC in the config, but libstdc++ still has lwsync in it. Is there a place I am missing to create a toolchain for generic PPC without any instances of lwsync? Additionally, on the 4.2.1 based toolchain, I don't have to pass "-M ppc" to objdump to resolve the instruction names, however on the 4.4.6 based toolchain I have to pass "-M ppc" otherwise I don't get the instruction names in the disassembler output. I don't know if this is another symptom of the same root cause. I do have "powerpc" in both the ARCH and CPU values of the CT-NG configuration. I have tried to create a test program that exhibits the problem without company proprietary information but the simple test programs always run without issue, so the only information I can forward publicly is the use of objdump.
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custom.config
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