Vivado synthesis supports conditional identifiers that can be used to control synthesis based on the Tool or the version.
For example, the following code will create an extra output if the Tool is a synthesis tool :
entity my_ent is port(
clk : in std_logic;
in1, in2 : in std_logic;
`if TOOL_TYPE = "SYNTHESIS" then
new_out : out std_logic;
`end if
out1 : out std_logic;Vivado synthesis supports the following conditional identifiers.
| IDENTIFIER | VALUE |
|---|---|
| VHDL_VERSION | “2023.1” |
| TOOL_TYPE | “SYNTHESIS” |
| TOOL_VENDOR | “AMD/XILINX” |
| TOOL_NAME | “Vivado” |
| TOOL_EDITION | “ML Editions” |
| TOOLS_VERSION | “2023.1” |
| VHDL_VERSION | “2019” |
Note: The values for these IDENTIFIERS are case sensitive.