[tpm2] Re: Need help cross compiling tpm2-* for arm

* [tpm2] Re: Need help cross compiling tpm2-* for arm
@ 2020-02-19 16:04 pweggler
  0 siblings, 0 replies; 5+ messages in thread
From: pweggler @ 2020-02-19 16:04 UTC (permalink / raw)
  To: tpm2

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Thank you! It compiles now, but the filetype of .libs/ libtpm2tss.so is ELF x86-64 instead of the expected arm

Greetings
Patrick

-----Ursprüngliche Nachricht-----
Von: Fuchs, Andreas <andreas.fuchs(a)sit.fraunhofer.de> 
Gesendet: Wednesday, February 19, 2020 1:58 PM
An: pweggler(a)jacol.de; tpm2(a)lists.01.org
Betreff: RE: Need help cross compiling tpm2-* for arm

If you look at the tpm2-tss-engine output, you'll notice only -L../tpm2-tss/src/tss2-esys/.libs The -L../tpm2-tss/src/tss2-sys/.libs -L../tpm2-tss/src/tss2-mu/.libs and -L../tpm2-tss/src/tss2-tcti/.libs are missing.

And I think I understand why.
On you ./configure call, the {tcti,mu,...} will expand into several version iterations of LDFLAGS.

see:
$ echo ./configure --build=i686-pc-linux-gnu --host=arm-oe-linux-gnueabi --target=arm-oe-linux-gnueabi PKG_CONFIG_PATH=${TPM2TSS}/lib:$PKG_CONFIG_PATH CFLAGS=-I${TPM2TSS}/include LDFLAGS=-L${TPM2TSS}/src/tss2-{tcti,mu,sys,esys}/.libs
./configure --build=i686-pc-linux-gnu --host=arm-oe-linux-gnueabi --target=arm-oe-linux-gnueabi PKG_CONFIG_PATH=/lib:/.../lib/pkgconfig CFLAGS=-I/include LDFLAGS=-L/src/tss2-tcti/.libs LDFLAGS=-L/src/tss2-mu/.libs LDFLAGS=-L/src/tss2-sys/.libs LDFLAGS=-L/src/tss2-esys/.libs

Only the last LDFLAGS will be honored...

I'm afraid you will have to do the LDFLAGS manually, without bash-expansion of {mu,sys,esys} Also remember to set it into "" so they are treated as one argument...

Good luck,
Andreas
________________________________________
From: pweggler(a)jacol.de [pweggler(a)jacol.de]
Sent: Wednesday, February 19, 2020 12:32
To: tpm2(a)lists.01.org
Subject: [tpm2] Re: Need help cross compiling tpm2-* for arm

Thank you for the instant reply! See both outputs attached.

(this is a resend with compressed logs. The uncompressed logs are exceeding the 400kb limit)

-----Ursprüngliche Nachricht-----
Von: Fuchs, Andreas <andreas.fuchs(a)sit.fraunhofer.de>
Gesendet: Wednesday, February 19, 2020 11:32 AM
An: pweggler(a)jacol.de; tpm2(a)lists.01.org
Betreff: RE: Need help cross compiling tpm2-* for arm

First, try to run

make V=1

that will enable verbose output. There we can have a look if the LDFLAGS for the paths were correctly forwarded to the make target.

Then we can take it from there.
________________________________________
From: pweggler(a)jacol.de [pweggler(a)jacol.de]
Sent: Wednesday, February 19, 2020 11:29
To: tpm2(a)lists.01.org
Subject: [tpm2] Need help cross compiling tpm2-* for arm

Hello,

I’m failing to crosscompile the tpm2-tss-engine. The build fails with “/usr/bin/ld: cannot find -ltss2-mu”. Can you provide me with an instruction or howto guide? I’m not sure if even the cross compilation is successful at all. Is there a way to explicitly specify the compiler path?

My steps so far:
I’m using ubuntu 18.04 LTS
I have cloned all github repos into a directory tpm2
tpm2
├── tpm2-abrmd
├── tpm2-tools
├── tpm2-tss
├── tpm2-tss-engine
└── tpm2-tss_orig

In the tpm2-tss folder:
./bootstrap
./configure --build=i686-pc-linux-gnu --host=arm-oe-linux-gnueabi --target=arm-oe-linux-gnueabi make -j$(nproc)

After this has succeeded
In the tpm2-tss-engine folder:
TPM2TSS=../tpm2-tss
./bootstrap
./configure --build=i686-pc-linux-gnu --host=arm-oe-linux-gnueabi --target=arm-oe-linux-gnueabi PKG_CONFIG_PATH=${TPM2TSS}/lib:$PKG_CONFIG_PATH CFLAGS=-I${TPM2TSS}/include LDFLAGS=-L${TPM2TSS}/src/tss2-{tcti,mu,sys,esys}/.libs
make -j$(nproc)

the complete error is:
CCLD     libtpm2tss.la
/usr/bin/ld: cannot find -ltss2-mu
/usr/bin/ld: cannot find -ltss2-tctildr
collect2: error: ld returned 1 exit status
Makefile:854: recipe for target 'libtpm2tss.la' failed
make: *** [libtpm2tss.la] Error 1

I have attached the output from both configure and make runs.

With kind regards
Patrick Weggler

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