tpm: express dependencies with Kconfig
This automatically removes the TPM backends from the binary altogether if no front-ends are selected. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -466,7 +466,7 @@ gcrypt_hmac="no"
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auth_pam=""
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vte=""
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virglrenderer=""
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tpm="yes"
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tpm=""
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libssh2=""
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live_block_migration="yes"
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numa=""
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@ -3877,20 +3877,20 @@ EOF
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fi
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##########################################
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# TPM passthrough is only on x86 Linux
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# TPM emulation is only on POSIX
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if test "$targetos" = Linux && { test "$cpu" = i386 || test "$cpu" = x86_64; }; then
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tpm_passthrough=$tpm
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else
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tpm_passthrough=no
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if test "$tpm" = ""; then
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if test "$mingw32" = "yes"; then
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tpm=no
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else
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tpm=yes
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fi
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elif test "$tpm" = "yes"; then
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if test "$mingw32" = "yes" ; then
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error_exit "TPM emulation only available on POSIX systems"
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fi
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fi
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# TPM emulator is for all posix systems
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if test "$mingw32" != "yes"; then
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tpm_emulator=$tpm
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else
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tpm_emulator=no
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fi
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##########################################
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# attr probe
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@ -1,16 +1,24 @@
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config TPM
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config TPMDEV
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bool
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depends on TPM
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config TPM_TIS
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bool
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depends on TPM && ISA_BUS
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select TPMDEV
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config TPM_CRB
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bool
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depends on TPM && PC
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select TPMDEV
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config TPM_PASSTHROUGH
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bool
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default y
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# FIXME: should check for x86 host as well
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depends on TPMDEV && LINUX
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config TPM_EMULATOR
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bool
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default y
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depends on TPMDEV
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