From 5e7edc86e3c87ffe3c843ce5daa05ef3309b4301 Mon Sep 17 00:00:00 2001
From: Francois Kritzinger <francois@codesynthesis.com>
Date: Wed, 17 Jan 2024 16:02:36 +0200
Subject: [PATCH] Add HAVE_SYSV_SHM and HAVE_SYSV_SEM

---
 .../libbuild2/autoconf/checks/HAVE_SYSV_SEM.h | 25 +++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SYSV_SHM.h | 27 +++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SEM.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SHM.h

diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SEM.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SEM.h
new file mode 100644
index 0000000..7366d5a
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SEM.h
@@ -0,0 +1,25 @@
+// HAVE_SYSV_SEM : BUILD2_AUTOCONF_LIBC_VERSION
+
+/* If HAVE_SYSV_SEM is defined then all of the SYSV semaphore system calls
+ * semget(), semctl(), and semop() are available.
+ */
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_SYSV_SEM
+
+/* Since glibc 2.0, FreeBSD 2.1.0 (based on checking the online manpages by
+ * version), and OpenBSD 2.2 (based on checking the online manpages by
+ * version).
+ *
+ * Available on all versions of NetBSD and macOS.
+ */
+#if BUILD2_AUTOCONF_GLIBC_PREREQ(2, 0)     || \
+    BUILD2_AUTOCONF_FREEBSD_PREREQ(2, 1)   || \
+    BUILD2_AUTOCONF_OPENBSD_PREREQ(199711) || \
+    defined(__NetBSD__)                    || \
+    defined(BUILD2_AUTOCONF_MACOS)
+#  define HAVE_SYSV_SEM 1
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SHM.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SHM.h
new file mode 100644
index 0000000..78e9fa3
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SYSV_SHM.h
@@ -0,0 +1,27 @@
+// HAVE_SYSV_SHM : BUILD2_AUTOCONF_LIBC_VERSION
+
+/*
+ * If HAVE_SYSV_SHM is defined then all SYSV shared memory system calls
+ * shmget(), shmat(), shmdt(), and shmctl() are available.
+ */
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE_SYSV_SHM
+
+/*
+ * Since glibc 2.0, FreeBSD 2.1.0 (based on checking the online manpages by
+ * version), and OpenBSD 2.2 (based on checking the online manpages by
+ * version).
+ *
+ * Available on all versions of NetBSD and macOS.
+ */
+#if BUILD2_AUTOCONF_GLIBC_PREREQ(2, 0)     || \
+    BUILD2_AUTOCONF_FREEBSD_PREREQ(2, 1)   || \
+    BUILD2_AUTOCONF_OPENBSD_PREREQ(199711) || \
+    defined(__NetBSD__)                    || \
+    defined(BUILD2_AUTOCONF_MACOS)
+#  define HAVE_SYSV_SHM 1
+#endif