2.18.2.2. VHDL Standard Libraries and Packages - The Quartus Prime software includes the standard IEEE libraries and several vendor-specific VHDL libraries. - 2026-02-19

Quartus Prime Pro Edition User Guide Design Compilation
Version
25.3
The Quartus® Prime software includes the standard IEEE libraries and several vendor-specific VHDL libraries. The IEEE library includes the standard VHDL packages std_logic_1164, numeric_std, numeric_bit, and math_real.

The STD library is part of the VHDL language standard and includes the packages standard (included in every project by default) and textio. For compatibility with older designs, the Quartus® Prime software also supports the following vendor-specific packages and libraries:

  • Synopsys® packages such as std_logic_arith and std_logic_unsigned in the IEEE library.
  • Mentor Graphics® packages such as std_logic_arith in the ARITHMETIC library.
  • Primitive packages altera_primitives_components (for primitives such as GLOBAL and DFFE) and maxplus2 in the ALTERA library.
  • IP core packages altera_mf_components in the ALTERA_MF library for specific IP cores including LCELL. In addition, lpm_components in the LPM library for library of parameterized modules (LPM) functions.
Note: Import component declarations for primitives such as GLOBAL and DFFE from the altera_primitives_components package and not the altera_mf_components package.