build: Fix clobbering of FUSE_PREFIX

pkg_check_modules(FUSE ...) in fuse.cmake tells CMake's pkg-config
module to use FUSE as the variable prefix. pkg-config then populates
FUSE_PREFIX with the install prefix of libfuse (i.e., usr). This
overwrote the FUSE_PREFIX cache variable set to /tmp/ouroboros in
global.cmake.

IRMd was calling mkdir("/usr", 0777) on startup and rmdir("/usr") on
shutdown. The rmdir only fails because usr isn't empty — if it ever
were (e.g., in a minimal container), it would deleted /usr.

The fix renames the pkg-config prefix from FUSE to FUSE_PKG, so
pkg-config populates FUSE_PKG_PREFIX (harmless) instead of clobbering
FUSE_PREFIX.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

0 files changed, 0 insertions, 0 deletions