ld: library not found for -lc

[Jonas Maebe]

It means "pass this parameter to the compiler". See e.g. the first post in this thread, where TomAylesworth executes fpc SphericalHouses.pas in a Terminal window to compile a program. Passing an extra parameter would entail adding that string at the end of this invocation.

If you are using Lazarus to compile programs, you can add extra parameters in Project -> Project Options… -> Compiler Options -> Custom Options

[Cavender]

Thank you!  That works.

jamescavender@jamescadersimac RainGauge % fpc iterator.pas -XR/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
Free Pascal Compiler version 3.2.2 [2021/05/16] for aarch64
Copyright (c) 1993-2021 by Florian Klaempfl and others
Target OS: Darwin for AArch64
Compiling iterator.pas
Assembling iterator
Linking iterator
29 lines compiled, 0.1 sec
jamescavender@jamescadersimac RainGauge %

[Jonas Maebe]

You can create a file called ".fpc.cfg" in your home directory (note the leading dot) with the following contents. Then you don't have to add that parameter manually every time.

Code: Pascal  [Select][+][-]

1. #include /etc/fpc.cfg
2. -XR/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
3.