nv_small build issue

[thefpgaguy]

Hi, I'm trying to build nv_small and had the following error. Anyone encounter this before?

Perl version : This is perl, v5.10.1 (*) built for x86_64-linux-thread-multi

Krek

TMAKE: building nv_small in vmod/nvdla/cbuf TMAKE: building nv_small in vmod/nvdla/csc Processing NV_NVDLA_CSC_slcg.v into ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_slcg.v.vcp ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_slcg.v.vcp successfully written eperl: ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_slcg.v modified. Processing NV_NVDLA_CSC_SG_dat_fifo.v into ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_SG_dat_fifo.v.vcp ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_SG_dat_fifo.v.vcp successfully written eperl: ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_SG_dat_fifo.v modified. Processing NV_NVDLA_CSC_dl.v into ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v.vcp ../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v.vcp successfully written ERROR: eperl: eval: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d2_en\" -d \"dat_rsp_l1_sft\" -q dat_rsp_l1_sft_d2"); &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d3_en\" -d \"dat_rsp_l1_sft_d2\" -q dat_rsp_l1_sft_d3");

error: Global symbol "$quat" requires explicit package name at (eval 39) line 1, line 1777. Global symbol "$quat" requires explicit package name at (eval 39) line 2, line 1777.

at ../../../tools/bin/eperl line 265 eperlmain::Error('eval:\x{a}&eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat...') called at ../../../tools/bin/eperl line 210 eperl_main::EvalScript('&eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sf...') called at ../../../tools/bin/eperl line 189 eperl_main::ProcessInput('../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v.vcp', '../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v.vcp...') called at ../../../tools/bin/eperl line 158 make: *** [../../../outdir/nv_small/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v] Error 25 Died at ./tools/bin/tmake line 254.

[eruanno123]

Looks like extra new line between perl scripts (NV_NVDLA_CSC_dl: line 1774 and 1777). Not 100% sure but those perl scripts seem to execute in separate context when separated with new line, so variable $quat would be 'out of scope'.

[thefpgaguy]

Thanks @eruanno123

I deleted 2 empty lines in hw/vmod/nvdla/csc/NV_NVDLA_CSC_dl.v (lines 1774 and 1777) and the problem went away.

However I encountered another problem. This is a basic build fresh from Git, could it be versions of my perl? or plugins?

Perl : 5.10.1 Capture::Tiny "VERSION: 0.48" XML::Simple "VERSION: 2.25"

The new problem:

Processing NV_NVDLA_CDP_DP_bufferin_tp1.v into ../../../outdir/nv_small/vmod/nvdla/cdp/NV_NVDLA_CDP_DP_bufferin_tp1.v.vcp ../../../outdir/nv_small/vmod/nvdla/cdp/NV_NVDLA_CDP_DP_bufferin_tp1.v.vcp successfully written ERROR: eperl: eval: foreach my $k (0..4) { my $m = $k + 4; foreach my $j (0..7) { print qq( datashift${m}${j} <= {${tp}*${bpe}{1'd0}}; ); } }

error: Global symbol "$tp" requires explicit package name at (eval 12) line 4, line 347. Global symbol "$bpe" requires explicit package name at (eval 12) line 4, line 347.

at ../../../tools/bin/eperl line 265 eperl_main::Error('eval:\x{a}foreach my $k (0..4) {\x{a}my $m = $k + 4;\x{a}foreach my $j (0...') called at ../../../tools/bin/eperl line 210 eperl_main::EvalScript('foreach my $k (0..4) {\x{a}my $m = $k + 4;\x{a}foreach my $j (0..7) {...') called at ../../../tools/bin/eperl line 189 eperl_main::ProcessInput('../../../outdir/nv_small/vmod/nvdla/cdp/NV_NVDLA_CDP_DP_buffe...', '../../../outdir/nv_small/vmod/nvdla/cdp/NV_NVDLA_CDP_DP_buffe...') called at ../../../tools/bin/eperl line 158 make: *** [../../../outdir/nv_small/vmod/nvdla/cdp/NV_NVDLA_CDP_DP_bufferin_tp1.v] Error 25 Died at tools/bin/tmake line 254.

[ghost]

I looked into *.v.vcp files and those new lines seem to be merged by text preprocessor. Check GCC version, maybe the preprocessor (cpp) behaves differently. The recommended version is gcc-4.9 AFAIK.

Here is the *.v.vcp output for your first issue:

//: my $half=64/2;
//: my $quat=64/4;
//: &eperl::flop("-nodeclare -wid ${half} -norst -en \"dat_rsp_sft_d1_en\" -d \"dat_rsp_l0_sft\" -q dat_rsp_l0_sft_d1");
//: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d2_en\" -d \"dat_rsp_l0_sft_d1\" -q dat_rsp_l0_sft_d2");
//: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d3_en\" -d \"dat_rsp_l0_sft_d2\" -q dat_rsp_l0_sft_d3");
//: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d2_en\" -d \"dat_rsp_l1_sft\" -q dat_rsp_l1_sft_d2");
//: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d3_en\" -d \"dat_rsp_l1_sft_d2\" -q dat_rsp_l1_sft_d3");
//: &eperl::flop("-nodeclare -wid ${quat} -norst -en \"dat_rsp_sft_d3_en\" -d \"dat_rsp_l2_sft\" -q dat_rsp_l2_sft_d3");

[thefpgaguy]

Thanks @mmaciag

I was using gcc version 4.4.7 and when I switch to gcc version 6.3.1 I was able to build it. I keep thinking its a perl issue.

Thanks for the big help.

Krek

[owenwu99]

5 cents experience sharing: I encountered the same issue described by thefpgaguy. At first, it looks like a Perl issue since the error message from Perl said so. But after I switch the cpp version from 4.4.7 to 4.7.2, this issue went away and I were able to build it.