Created attachment 1513212 [details]
dist-git patch backporting the upstream patch

Description of problem:
When passed header files as a list of files(), meson generates the enum files incorrectly, such that the headers cannot be imported properly.

Version-Release number of selected component (if applicable):
meson-0.45.1-2.el8.noarch

How reproducible:
Every time

Steps to Reproduce:
1. `git clone https://github.com/fedora-modularity/libmodulemd.git`
2. `meson -Dbuild_api_v2=True -Dbuild_api_v1=False api2 -Ddeveloper_build=False`
3. `ninja build -C api2`

Actual results:
FAILED: modulemd/v2/modulemd@sha/meson-generated_.._modulemd-enums.c.o 
cc  -Imodulemd/v2/modulemd@sha -Imodulemd/v2 -I../modulemd/v2 -I../modulemd/v2/include/modulemd-2.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c11 -O2 -g -Wpointer-arith -Werror=missing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wuninitialized -Werror=format-security -Werror=format=2 -Werror=implicit -Werror=init-self -Werror=main -Werror=missing-braces -Werror=return-type -Werror=array-bounds -Werror=write-strings -DG_LOG_USE_STRUCTURED '-DG_LOG_DOMAIN="libmodulemd"' -fPIC -MD -MQ 'modulemd/v2/modulemd@sha/meson-generated_.._modulemd-enums.c.o' -MF 'modulemd/v2/modulemd@sha/meson-generated_.._modulemd-enums.c.o.d' -o 'modulemd/v2/modulemd@sha/meson-generated_.._modulemd-enums.c.o' -c modulemd/v2/modulemd-enums.c
modulemd/v2/modulemd-enums.c:5:10: fatal error: modulemd/v2/include/modulemd-2.0/modulemd.h: No such file or directory
 #include "modulemd/v2/include/modulemd-2.0/modulemd.h"


Expected results:
Build should succeed (and does, with 0.47+)


Additional info:
Upstream patch is attached to this BZ which resolves the issue (I monkey-patched it in a container to verify). It applies cleanly