Here is a description of the PDM audio software decoding library from the AN3998 PDF:
The PDM audio software decoding library includes one header file pdm_filter.h and binary/object codes for the following platforms:
: for IAR compiler
: for ARM compiler: for GNU compiler
This Library is provided in the "STM32F4-DISCOVERY board firmware package" (V1.10and later) under the following path 'Utilities\STM32F4-Discovery'
Does it mean that other compilers cannot take advantage of the library? Or the library is a result of a compilation of the included .c and .h files provided in the same Utilities\STM32F4-Discovery folder?