BUILD: restore USE_SHM_OPEN build option

Some optional features may still require the use of shm_open() in the
future. In this patch we restore the USE_SHM_OPEN build option that
was removed in 143be1b59 ("MEDIUM: errors: get rid of shm_open()") and
should guard the use of shm_open() in the code.

diff --git a/Makefile b/Makefile
index b874fa32fd2f3165bbed5447dfd157b824850bc4..fca129c0b6d7730c6475246b30aa73533735df7b 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -62,6 +62,7 @@
 #   USE_MEMORY_PROFILING    : enable the memory profiler. Linux-glibc only.
 #   USE_LIBATOMIC           : force to link with/without libatomic. Automatic.
 #   USE_PTHREAD_EMULATION   : replace pthread's rwlocks with ours
+#   USE_SHM_OPEN            : use shm_open() for features that can make use of shared memory
 #
 # Options can be forced by specifying "USE_xxx=1" or can be disabled by using
 # "USE_xxx=" (empty string). The list of enabled and disabled options for a
@@ -343,7 +344,7 @@ use_opts = USE_EPOLL USE_KQUEUE USE_NETFILTER USE_POLL                        \
            USE_MATH USE_DEVICEATLAS USE_51DEGREES                             \
            USE_WURFL USE_OBSOLETE_LINKER USE_PRCTL USE_PROCCTL                \
            USE_THREAD_DUMP USE_EVPORTS USE_OT USE_QUIC USE_PROMEX             \
-           USE_MEMORY_PROFILING                                               \
+           USE_MEMORY_PROFILING USE_SHM_OPEN                                  \
            USE_STATIC_PCRE USE_STATIC_PCRE2                                   \
            USE_PCRE USE_PCRE_JIT USE_PCRE2 USE_PCRE2_JIT USE_QUIC_OPENSSL_COMPAT
 
@@ -382,7 +383,7 @@ ifeq ($(TARGET),linux-glibc)
     USE_POLL USE_TPROXY USE_LIBCRYPT USE_DL USE_RT USE_CRYPT_H USE_NETFILTER  \
     USE_CPU_AFFINITY USE_THREAD USE_EPOLL USE_LINUX_TPROXY USE_LINUX_CAP      \
     USE_ACCEPT4 USE_LINUX_SPLICE USE_PRCTL USE_THREAD_DUMP USE_NS USE_TFO     \
-    USE_GETADDRINFO USE_BACKTRACE)
+    USE_GETADDRINFO USE_BACKTRACE USE_SHM_OPEN)
   INSTALL = install -v
 endif
 
@@ -401,7 +402,7 @@ ifeq ($(TARGET),linux-musl)
     USE_POLL USE_TPROXY USE_LIBCRYPT USE_DL USE_RT USE_CRYPT_H USE_NETFILTER  \
     USE_CPU_AFFINITY USE_THREAD USE_EPOLL USE_LINUX_TPROXY USE_LINUX_CAP      \
     USE_ACCEPT4 USE_LINUX_SPLICE USE_PRCTL USE_THREAD_DUMP USE_NS USE_TFO     \
-    USE_GETADDRINFO USE_BACKTRACE)
+    USE_GETADDRINFO USE_BACKTRACE USE_SHM_OPEN)
   INSTALL = install -v
 endif