tinycc's headers are not included when built from the frida repo

[bellma]

When trying to compile a CModule with the embedded tinycc compiler, I am getting errors that stdarg.h cannot be found. Under certain circumstances, it appears like tinycc's headers are not included in the runtime if you build from the https://github.com/frida/frida repo.

I may be overlooking something, but I believe the solution is to change the line at

frida-gum/bindings/gumjs/meson.build

Line 224 in 5ee7ae3

libtcc_incdir = meson.project_source_root() / 'subprojects' / 'tinycc' / 'include'

to this

libtcc_incdir = meson.global_source_root() / 'subprojects' / 'tinycc' / 'include'

The change sets libtcc_incdir to <frida>/subprojects/tinycc/include instead of <frida>/subprojects/frida-gum/subprojects/tinycc/include (which doesn't exist).

I am compiling with a custom toolchain without a prebuilt SDK, and configuring with the following:

./configure --without-prebuilds=sdk:host --host=arm-unknown-linux-gnueabi --enable-gadget --enable-server -- -Dfrida_qml=disabled -Dfrida-gum:devkits=gum,gumjs -Dfrida-core:compiler_backend=enabled -Dfrida-core:devkits=core