having issue with PKG_CONFIG_PATH

[varunmr]

Hi team,
This chandra tried running end-to end co simulation with lowrisc_ibex core and i am facing an issue as mentioned below,kindly help me out ,even i tried same with pre-compiled built having same issue.

make --keep-going IBEX_CONFIG=opentitan SIMULATOR=questa ISS=spike ITERATIONS=1 SEED=1 TEST=$TEST_NAME WAVES=0 COV=0
Build metadata already exists, not recreating from scratch.
Building RTL testbench
Traceback (most recent call last):
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 94, in _main
subprocess.check_output(['pkg-config', '--exists'] + spike_iss_pc)
File "/usr/lib64/python3.9/subprocess.py", line 424, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib64/python3.9/subprocess.py", line 528, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['pkg-config', '--exists', 'riscv-riscv', 'riscv-disasm', 'riscv-fdt', 'riscv-fesvr']' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 149, in
sys.exit(_main())
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 96, in _main
raise RuntimeError(
RuntimeError: Failed to find ['riscv-riscv', 'riscv-disasm', 'riscv-fdt', 'riscv-fesvr'] pkg-config packages. Did you set the PKG_CONFIG_PATH correctly?
make[1]: *** [scripts/ibex_sim.mk:42: out/metadata/tb.compile.stamp] Error 1
Building randomized test generator
make[1]: *** [scripts/riscvdv.mk:61: out/metadata/instr.gen.build.stamp] Error 1
make[1]: Target 'all' not remade because of errors.
make: *** [Makefile:72: run] Error 2

My Environment

i have followed all the steps which are mentioned in the git repo to install spike and gnu-toolchain

[marnovandermaas]

Can you try the following command?

echo $PKG_CONFIG_PATH

For my setup I use the following exports:

export SPIKE_PATH=$_SPIKE_ROOT/bin
export PKG_CONFIG_PATH=$_SPIKE_ROOT/lib/pkgconfig:$PKG_CONFIG_PATH

It essentially lets the environment know where to find Spike.

[marnovandermaas]

Actually there is a better explanation here: https://github.com/lowRISC/ibex/tree/master/dv/uvm/core_ibex#prerequisites

[varunmr]

export SPIKE_ROOT=/usr/
export SPIKE_PATH=$SPIKE_ROOT/bin
export PKG_CONFIG_PATH=$SPIKE_ROOT/lib/pkgconfig:$PKG_CONFIG_PATH
make COSIM=1
Build metadata already exists, not recreating from scratch.
Building RTL testbench
Traceback (most recent call last):
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 94, in _main
subprocess.check_output(['pkg-config', '--exists'] + spike_iss_pc)
File "/usr/lib64/python3.9/subprocess.py", line 424, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib64/python3.9/subprocess.py", line 528, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['pkg-config', '--exists', 'riscv-riscv', 'riscv-disasm', 'riscv-fdt', 'riscv-fesvr']' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 149, in
sys.exit(_main())
File "/home/gonu.sekhar/Desktop/ibex/dv/uvm/core_ibex/scripts/compile_tb.py", line 96, in _main
raise RuntimeError(
RuntimeError: Failed to find ['riscv-riscv', 'riscv-disasm', 'riscv-fdt', 'riscv-fesvr'] pkg-config packages. Did you set the PKG_CONFIG_PATH correctly?
make[1]: *** [scripts/ibex_sim.mk:42: out/metadata/tb.compile.stamp] Error 1
make: *** [Makefile:72: run] Error 2

still i am having same issue.

ls /usr/lib/pkgconfig/
riscv-disasm.pc riscv-fesvr.pc riscv-riscv.pc
seems in the above directory 'riscv-fdt' is not available, does is cause any issue? if yes how to isolate it

[marnovandermaas]

Missing riscv-fdt will cause that error. Did you build Spike from here?

[varunmr]

yes i have installed from the same git repo

[marnovandermaas]

Where did you install Spike? As in what argument did you pass to --prefix when you configured the build? I usually try not to install to the /usr directory to avoid clashing with system installs.

Also after triggering the error can you run the following commands:

echo $PKG_CONFIG_PATH
which spike
spike --help

[varunmr]

Where did you install Spike?
/tools-spike (i have created new directory to install)
As in what argument did you pass to --prefix when you configured the build?
$RISCV (RISCV=/tools-spike)

echo $PKG_CONFIG_PATH
/tools-spike/lib/pkgconfig

ls /tools-spike/lib/pkgconfig
riscv-disasm.pc riscv-fesvr.pc

which spike
/tools-spike/bin/spike

spike --help
Spike RISC-V ISA Simulator 1.1.1-dev

usage: spike [host options] [target options]
Host Options:
-p Simulate processors [default 1]
-m Provide MiB of target memory [default 2048]
-m<a:m,b:n,...> Provide memory regions of size m and n bytes
at base addresses a and b (with 4 KiB alignment)
-d Interactive debug mode
-g Track histogram of PCs
-l Generate a log of execution
-h, --help Print this help message
-H Start halted, allowing a debugger to connect
--log= File name for option -l
--debug-cmd= Read commands from file (use with -d)
--isa= RISC-V ISA string [default RV64IMAFDC]
--priv=<m|mu|msu> RISC-V privilege modes supported [default MSU]
--varch= RISC-V Vector uArch string [default vlen:128,elen:64]
--pc=

Override ELF entry point
--hartids=<a,b,...> Explicitly specify hartids, default is 0,1,...
--ic=:: Instantiate a cache model with S sets,
--dc=:: W ways, and B-byte blocks (with S and
--l2=:: B both powers of 2).
--device=<P,B,A> Attach MMIO plugin device from an --extlib library
P -- Name of the MMIO plugin
B -- Base memory address of the device
A -- String arguments to pass to the plugin
This flag can be used multiple times.
The extlib flag for the library must come first.
--log-cache-miss Generate a log of cache miss
--extension= Specify RoCC Extension
This flag can be used multiple times.
--extlib= Shared library to load
This flag can be used multiple times.
--rbb-port= Listen on for remote bitbang connection
--dump-dts Print device tree string and exit
--dtb= Use specified device tree blob [default: auto-generate]
--disable-dtb Don't write the device tree blob into memory
--kernel= Load kernel flat image into memory
--initrd= Load kernel initrd into memory
--bootargs= Provide custom bootargs for kernel [default: console=hvc0 earlycon=sbi]
--real-time-clint Increment clint time at real-time rate
--dm-progsize= Progsize for the debug module [default 2]
--dm-sba= Debug system bus access supports up to wide accesses [default 0]
--dm-auth Debug module requires debugger to authenticate
--dmi-rti= Number of Run-Test/Idle cycles required for a DMI access [default 0]
--dm-abstract-rti= Number of Run-Test/Idle cycles required for an abstract command to execute [default 0]
--dm-no-hasel Debug module supports hasel
--dm-no-abstract-csr Debug module won't support abstract to authenticate
--dm-no-halt-groups Debug module won't support halt groups
--dm-no-impebreak Debug module won't support implicit ebreak in program buffer
--blocksz= Cache block size (B) for CMO operations(powers of 2) [default 64]

[marnovandermaas]

So the content of the package config directory is where the difference is:

> ls lib/pkgconfig 
riscv-disasm.pc  riscv-fdt.pc  riscv-fesvr.pc  riscv-riscv.pc

Inside the repository where you built Spike can you just double check you are on the right remote and branch? When I do git log this is the first thing that pops up:

commit 39612f93837122a980395487f55b2d97d29d70c1 (HEAD -> ibex_cosim, origin/ibex_cosim)
Author: Greg Chadwick <gac@lowrisc.org>
Date:   Thu Jun 27 14:46:45 2024 +0200

    Introduce pre_val MIP concept.
    
    When Ibex is executing an instruction it is possible for MIP to change
    whilst that instruction is stalled in the ID/EX stage. This results in
    the MIP observed by a CSR instruction differing from the MIP that
    decides whether or not that instruction may be interrupted which leads
    to model mis-matches.
    
    This adds a new MIP 'pre_val' which is the MIP value used to determine
    whether or not an interrupt is taken. The existing value is the one
    observed by CSR instructions. Employing this mechanism avoids the

Also, to help you proceed, I've attached a tarball of my current installed version of Spike so you can use that in the meantime (built on Ubuntu 24.04):
https://drive.google.com/file/d/1FaS6_zhW3CYbNS8529b5hE3iH5h1h_1K/view?usp=sharing

[varunmr]

Thanks for the support the above information helps me.
i am running rtl simulation with questa but its triggering xrun ,can you help me on this

make COSIM=1
Build metadata already exists, not recreating from scratch.
Building RTL testbench
[Errno 2] No such file or directory: 'xrun'
make[1]: *** [scripts/ibex_sim.mk:42: out/metadata/tb.compile.stamp] Error 1
make: *** [Makefile:72: run] Error 2

make --keep-going IBEX_CONFIG=opentitan SIMULATOR=questa ISS=spike ITERATIONS=1 SEED=1 TEST=$TEST_NAME WAVES=0 COV=0
for the above command also getting same errror

[marnovandermaas]

In case you've run the make file before you need to remove the out directory under dv/uvm/core_ibex. The meta-data does not get rebuilt when you change the parameters.

[varunmr]

make TEST=riscv_machine_mode_rand_test ITERATIONS=1
Build metadata already exists, not recreating from scratch.
Building RTL testbench
make[1]: *** [scripts/ibex_sim.mk:42: out/metadata/tb.compile.stamp] Error 5
make: *** [Makefile:72: run] Error 2
after removing the out directory i got the above error.

can you please help to run the simulation with questa simulator

[marnovandermaas]

I don't have access to the Questa simulator so won't be able to help on that front. Our simulator should work under Xcelium.