From aa792406292be784fbecdcc3fb77322fdc6b6119 Mon Sep 17 00:00:00 2001
From: Alexandre Joannou <aj443@cam.ac.uk>
Date: Thu, 23 Apr 2020 02:04:19 +0100
Subject: [PATCH] generalise genDependencies a bit with env variables (no
 obvious getoptsin tcl AFAIK)

---
 builds/Resources/genDependencies.tcl | 104 ++++++++++++++++++---------
 1 file changed, 72 insertions(+), 32 deletions(-)

diff --git a/builds/Resources/genDependencies.tcl b/builds/Resources/genDependencies.tcl
index d59a5d7..5095339 100755
--- a/builds/Resources/genDependencies.tcl
+++ b/builds/Resources/genDependencies.tcl
@@ -2,43 +2,83 @@
 
 namespace import ::Bluetcl::*
 
-flags set -p "../RV64ACDFIMSU_Toooba_verilator:../../libs/BlueStuff:../../libs/BlueStuff/AXI:../../libs/BlueStuff/BlueUtils:../../libs/BlueStuff/BlueBasics:../../src_Core/RISCY_OOO/procs/RV64G_OOO:../../src_Core/RISCY_OOO/procs/lib:../../src_Core/RISCY_OOO/coherence/src:../../src_Core/RISCY_OOO/fpgautils/lib:../../src_Core/RISCY_OOO/connectal/bsv:../../src_Core/RISCY_OOO/connectal/tests/spi:../../src_Core/RISCY_OOO/connectal/lib/bsv:../../src_Core/RISCY_OOO/../../src_Verifier:../../src_Core/RISCY_OOO/../../src_Verifier/BSV-RVFI-DII:../../src_Core/RISCY_OOO/../CHERI:../../src_Core/RISCY_OOO/../../libs/cheri-cap-lib:../../src_Core/CPU:../../src_Core/ISA:../../src_Core/Core:../../src_Core/PLIC:../../src_Core/Debug_Module:../../src_Core/BSV_Additional_Libs:../../src_Testbench/Top:../../src_Testbench/SoC:../../libs/TagController/TagController:../../libs/TagController/TagController/CacheCore:+"
+# there does not seam to be a nice "getopt" in tcl, so for now, falling back on:
+#
+# - env variables:
+# BSC_PATH
+# BSC_DEFINES
+# BSC_BUILDDIR
+# BSC_TOPFILE
+# OUTPUTFILE
+#
+# - if argv is non empty, each arg is passed individually to a flags set command
+#   (that is, can't pass flags that expect arguments themselves like -D XXX)
+################################################################################
 
-flags set -D RISCV
-flags set -D RV64
-flags set -D ISA_PRIV_M
-flags set -D ISA_PRIV_U
-flags set -D ISA_PRIV_S
-flags set -D SV39
-flags set -D ISA_I
-flags set -D ISA_M
-flags set -D ISA_A
-flags set -D ISA_F
-flags set -D ISA_D
-flags set -D ISA_FD_DIV
-flags set -D ISA_C
-flags set -D SHIFT_BARREL
-flags set -D MULT_SYNTH
-flags set -D Near_Mem_Caches
-flags set -D FABRIC64
-flags set -D CAP128
-flags set -D MEM64
-#flags set -D RVFI_DII
-#flags set -D RVFI
-flags set -D BSIM
-flags set -D CORE_SMALL
-flags set -D NUM_CORES=1
-flags set -D CACHE_SMALL
-flags set -D XILINX_FP_FMA_LATENCY=3
-flags set -D XILINX_INT_MUL_LATENCY=2
-flags set -D USE_BSV_BRAM_SYNC_FIFO
+if { [info exists env(BSC_PATH)] } {
+  set path $env(BSC_PATH)
+} else {
+  #set path ".:+"
+  set path "../../libs/BlueStuff:../../libs/BlueStuff/AXI:../../libs/BlueStuff/BlueUtils:../../libs/BlueStuff/BlueBasics:../../src_Core/RISCY_OOO/procs/RV64G_OOO:../../src_Core/RISCY_OOO/procs/lib:../../src_Core/RISCY_OOO/coherence/src:../../src_Core/RISCY_OOO/fpgautils/lib:../../src_Core/RISCY_OOO/connectal/bsv:../../src_Core/RISCY_OOO/connectal/tests/spi:../../src_Core/RISCY_OOO/connectal/lib/bsv:../../src_Core/RISCY_OOO/../../src_Verifier:../../src_Core/RISCY_OOO/../../src_Verifier/BSV-RVFI-DII:../../src_Core/RISCY_OOO/../CHERI:../../src_Core/RISCY_OOO/../../libs/cheri-cap-lib:../../src_Core/CPU:../../src_Core/ISA:../../src_Core/Core:../../src_Core/PLIC:../../src_Core/Debug_Module:../../src_Core/BSV_Additional_Libs:../../src_Testbench/Top:../../src_Testbench/SoC:../../libs/TagController/TagController:../../libs/TagController/TagController/CacheCore:+"
+}
 
-flags set -bdir build_dir
+if { [info exists env(BSC_DEFINES)] } {
+  set defines [split $env(BSC_DEFINES)]
+} else {
+  #set defines {}
+  set defines [split "RISCV RV64 ISA_PRIV_M ISA_PRIV_U ISA_PRIV_S SV39 ISA_I ISA_M ISA_A ISA_F ISA_D ISA_FD_DIV ISA_C SHIFT_BARREL MULT_SYNTH Near_Mem_Caches FABRIC64 CAP128 MEM64 BSIM CORE_SMALL NUM_CORES=1 CACHE_SMALL XILINX_FP_FMA_LATENCY=3 XILINX_INT_MUL_LATENCY=2 USE_BSV_BRAM_SYNC_FIFO"]
+}
 
-set topfile [lindex $argv 0]
+if { [info exists env(BSC_BUILDDIR)] } {
+  set builddir $env(BSC_BUILDDIR)
+} else {
+  set builddir "build"
+}
 
+if { [info exists env(BSC_TOPFILE)] } {
+  set topfile $env(BSC_TOPFILE)
+} else {
+  set topfile "Top.bsv"
+}
+
+if { [info exists env(OUTPUTFILE)] } {
+  set outputfile $env(OUTPUTFILE)
+} else {
+  set outputfile ".depends.mk"
+}
+
+# debug prints
+#puts "path: $path"
+#puts "defines: $defines"
+#puts "builddir: $builddir"
+#puts "topfile: $topfile"
+#puts "outputfile: $outputfile"
+#puts "argv: $argv"
+
+# setting compiler flags
+################################################################################
+
+flags set -p $path
+flags set -bdir $builddir
+flags set -verilog
+foreach i $defines {
+  flags set -D $i
+}
+if { $argc > 0 } { foreach i $argv { flags set $i } }
+
+# output of "depend make" seams to be of the form
+# { {tgtA {depA0 depA1 ...}}
+#   {tgtB {depB0 depB1 ...}}
+#   ...
+# }
+# reformating it for make
+################################################################################
+
+set fd [open $outputfile w]
 foreach i [depend make $topfile] {
   set tgt [lindex $i 0]
   set deps [join [lindex $i 1]]
-  puts [append tgt ": " $deps]
+  puts $fd [append tgt ": " $deps]
 }
+close $fd
+puts "generated make dependency rules for \"$topfile\" in: $outputfile"