Library search path build setting is not set

[kwridan]

Describe the bug
Generated projects fail to build when depending on c / Objective-C static libraries.

To Reproduce

• Given a prebuilt static library, headers and a module map

e.g.

prebuilt/
├── include
│   └── ObjcStaticLibrary
│       ├── LibraryClass.h
│       ├── ObjcStaticLibrary.h
│       └── module.modulemap
└── libObjcStaticLibrary.a

• Add a dependency on that static library

e.g.

let project = Project(name: "App",
                      targets: [
                          Target(name: "App",
                                 platform: .iOS,
                                 product: .app,
                                 bundleId: "io.tuist.App",
                                 infoPlist: "Info.plist",
                                 sources: "Sources/**",
                                 dependencies: [
                                     .library(path: "prebuilt/libObjcStaticLibrary.a", publicHeaders: "prebuilt/include", swiftModuleMap: nil)
                          ])
               ])

• run tuist generate
• build the generated project

build fails!

Expected behavior
The generated project should build with the following error:

ld: library not found for -lObjcStaticLibrary
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Additional context

Investigating this further, it seem's the LIBRARY_SEARCH_PATHS build setting is not set.
Setting it to $(SRCROOT)/prebuilt fixes the issue.

Let me know if I made some false assumptions in my setup

[pepicrft]

That seems a legit issue. Good catch @kwridan