ghdl: added a more concise alternative

Author: rodrigomelo9

ghdl/vhdl.sh

@@ -2,11 +2,36 @@
 
 set -e
 
-FLAGS="--std=08 -fsynopsys -fexplicit -frelaxed"
+DIR=../resources/vhdl
 
-ghdl -a $FLAGS --work=blink_lib ../resources/vhdl/blink.vhdl
-ghdl -a $FLAGS --work=blink_lib ../resources/vhdl/blink_pkg.vhdl
-ghdl -a $FLAGS ../resources/vhdl/top.vhdl
+FLAGS="--std=08 -fsynopsys -fexplicit -frelaxed"
 
 GENERICS="-gBOO=true -gINT=255 -gLOG='1' -gVEC="11111111" -gCHR='Z' -gSTR="WXYZ" -gSKIP_REA=1"
-ghdl --synth $FLAGS $GENERICS Top ARCH_SEL
+
+###############################################################################
+# Alternative 1
+###############################################################################
+
+# This alternative is better to specify particular options per file
+
+ghdl -a $FLAGS --work=blink_lib $DIR/blink.vhdl
+ghdl -a $FLAGS --work=blink_lib $DIR/blink_pkg.vhdl
+ghdl -a $FLAGS $DIR/top.vhdl
+
+ghdl synth $FLAGS $GENERICS Top ARCH_SEL
+
+# This alternative creates .cf files due the ghdl -a
+rm -fr *.cf
+
+###############################################################################
+# Alternative 2
+###############################################################################
+
+# This alternative is more concise
+
+# --work=<LIBNAME> applies to the following files
+# The output in this case is a synthesized Verilog (VHDL is the default)
+
+ghdl synth $FLAGS --out=verilog $GENERICS \
+  --work=blink_lib $DIR/blink.vhdl $DIR/blink_pkg.vhdl \
+  --work=work $DIR/top.vhdl -e Top ARCH_SEL