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[Libguestfs] [PATCH nbdkit 04/10] freebsd: Make <alloca.h> conditional.



On FreeBSD the definition exists in <stdlib.h>
---
 configure.ac          | 1 +
 filters/cache/cache.c | 5 ++++-
 filters/cow/cow.c     | 5 ++++-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 87f14d6..3381955 100644
--- a/configure.ac
+++ b/configure.ac
@@ -130,6 +130,7 @@ CFLAGS="${acx_nbdkit_save_CFLAGS}"
 
 dnl Check for other headers, all optional.
 AC_CHECK_HEADERS([\
+	alloca.h \
 	byteswap.h \
 	endian.h \
 	selinux/selinux.h \
diff --git a/filters/cache/cache.c b/filters/cache/cache.c
index 76a0438..90a0444 100644
--- a/filters/cache/cache.c
+++ b/filters/cache/cache.c
@@ -39,7 +39,6 @@
 #include <stdbool.h>
 #include <string.h>
 #include <inttypes.h>
-#include <alloca.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -47,6 +46,10 @@
 #include <sys/ioctl.h>
 #include <assert.h>
 
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
 #include <nbdkit-filter.h>
 
 #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
diff --git a/filters/cow/cow.c b/filters/cow/cow.c
index 2f86f6c..5df1db2 100644
--- a/filters/cow/cow.c
+++ b/filters/cow/cow.c
@@ -77,13 +77,16 @@
 #include <stdbool.h>
 #include <string.h>
 #include <inttypes.h>
-#include <alloca.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
 
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
 #include <nbdkit-filter.h>
 
 #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
-- 
2.18.0


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