genconfigheader.sh

Usage: genconfigheader.sh <output_header_file> [CFLAGS]

Generate a build configuration header from CFLAGS arguments

• Arguments on the form -Dmacro_name=macro_value will be converted to the form #define macro_name macro_value
• Arguments given on the form -Dmacro_name will be converted to the form #define macro_name 1
• The output file will be overwritten if it already exists and the new output file's contents differs from the old file.

By not replacing the output file on every run, make can still use the file modification times for dependency calculations.