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Diffstat (limited to 'm4/sys_shm_h.m4')
| -rw-r--r-- | m4/sys_shm_h.m4 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/m4/sys_shm_h.m4 b/m4/sys_shm_h.m4 new file mode 100644 index 0000000000..8804ad2ce8 --- /dev/null +++ b/m4/sys_shm_h.m4 @@ -0,0 +1,20 @@ +# sys_shm_h.m4 serial 1 +dnl Copyright (C) 2023 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Written by Bruno Haible. + +AC_DEFUN_ONCE([gl_SYS_SHM_H], +[ + AC_CHECK_HEADERS_ONCE([sys/shm.h]) + dnl For now, we provide a <sys/shm.h> wrapper only if the system already has + dnl a <sys/shm.h>. + if test $ac_cv_header_sys_shm_h = yes; then + GL_GENERATE_SYS_SHM_H=true + gl_CHECK_NEXT_HEADERS([sys/shm.h]) + else + GL_GENERATE_SYS_SHM_H=false + fi +]) |