How to include headers for C compilation in Gradle? - gradle

Question

I am a newbie to Gradle. I am trying to compile a set of source files which contain headers which are distributed across the project directory. My source directory structure does not comply with the Gradle convention. How do I add the header locations needed for compilation in my build.gradle? Attached here is my build.gradle file.
// build.gradle
apply plugin: 'c'
model {
components {
my_project (NativeExecutableSpec){
sources {
c {
source {
srcDir "my_proj_src/a/a1.1"
include "**/*.c"
}
exportedHeaders {
srcDir "my_proj_src/a/a1.1", "fsw/b/b1.2"
}
}
}
}
}
}
This does not work. And additionally, is there a possibility to do partial linking using Gradle?
EDIT: Additionally, I would like to also know how to make Gradle search recursively for headers within the source hierarchy.

Answer 1

exportedHeaders` are for exporting headers from the component itself, not for adding headers. So this would not work.
You would need to create a library and add it as the api linkage so that those headers will be added to headers your component is compiled against:
model {
repositories {
libs(PrebuiltLibraries) {
ffmpegHeaders {
headers.srcDirs "$ffmpegDir/include"
}
}
}
components {
libUsingHeaders(NativeLibrarySpec) {
sources {
c {
lib library: 'ffmpegHeaders', linkage: 'api'
}
}
}
}
}