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shm: unbreak build without memfd_create

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New FreeBSD versions have memfd_create but other BSDs don't.

pgo/pgo.c:260:22: error: implicit declaration of function 'memfd_create' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        int mem_fd = memfd_create("foot-pgo-ptmx", MFD_CLOEXEC);
                     ^
pgo/pgo.c:260:52: error: use of undeclared identifier 'MFD_CLOEXEC'
        int mem_fd = memfd_create("foot-pgo-ptmx", MFD_CLOEXEC);
                                                   ^
shm.c:13:10: fatal error: 'linux/mman.h' file not found
 #include <linux/mman.h>
          ^~~~~~~~~~~~~~
shm.c:277:15: error: implicit declaration of function 'memfd_create' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    pool_fd = memfd_create("foot-wayland-shm-buffer-pool", MFD_CLOEXEC | MFD_ALLOW_SEALING);
              ^
shm.c:277:60: error: use of undeclared identifier 'MFD_CLOEXEC'
    pool_fd = memfd_create("foot-wayland-shm-buffer-pool", MFD_CLOEXEC | MFD_ALLOW_SEALING);
                                                           ^
shm.c:277:74: error: use of undeclared identifier 'MFD_ALLOW_SEALING'
    pool_fd = memfd_create("foot-wayland-shm-buffer-pool", MFD_CLOEXEC | MFD_ALLOW_SEALING);
                                                                         ^
shm.c:339:15: error: use of undeclared identifier 'F_SEAL_GROW'
              F_SEAL_GROW | F_SEAL_SHRINK | /*F_SEAL_FUTURE_WRITE |*/ F_SEAL_SEAL) < 0)
              ^
shm.c:339:29: error: use of undeclared identifier 'F_SEAL_SHRINK'
              F_SEAL_GROW | F_SEAL_SHRINK | /*F_SEAL_FUTURE_WRITE |*/ F_SEAL_SEAL) < 0)
                            ^
shm.c:339:71: error: use of undeclared identifier 'F_SEAL_SEAL'
              F_SEAL_GROW | F_SEAL_SHRINK | /*F_SEAL_FUTURE_WRITE |*/ F_SEAL_SEAL) < 0)
                                                                      ^
shm.c:338:24: error: use of undeclared identifier 'F_ADD_SEALS'
    if (fcntl(pool_fd, F_ADD_SEALS,
                       ^
This commit is contained in:
Jan Beich 2021-01-19 14:20:55 +00:00 • committed by Daniel Eklöf
parent 93fd77e01b
commit fcf3f124d6
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GPG key ID: 5BBD4992C116573F
3 changed files with 25 additions and 2 deletions
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meson.build
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@ -12,6 +12,10 @@ is_debug_build = get_option('buildtype').startswith('debug')
cc = meson.get_compiler('c')
if cc.has_function('memfd_create')
add_project_arguments('-DMEMFD_CREATE', language: 'c')
endif
add_project_arguments(
['-D_POSIX_C_SOURCE=200809L', '-D_GNU_SOURCE=200809L'] +
(is_debug_build