The concept of endianness seems to be somewhat newfangled, so the

respective conversion functions are not yet properly standardized.
Rumour has it that POSIX is working on it, though.
For now, sprinkle some configuration glue.

9 files changed, 71 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 96f82cb2..f3f50c45 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,8 @@ VERSION = 1.14.0
 
 # === LIST OF FILES ====================================================
 
-TESTSRCS	 = test-dirent-namlen.c \
+TESTSRCS	 = test-be32toh.c \
+		   test-dirent-namlen.c \
 		   test-EFTYPE.c \
 		   test-err.c \
 		   test-fts.c \
@@ -28,6 +29,7 @@ TESTSRCS	 = test-dirent-namlen.c \
 		   test-isblank.c \
 		   test-mkdtemp.c \
 		   test-nanosleep.c \
+		   test-ntohl.c \
 		   test-ohash.c \
 		   test-PATH_MAX.c \
 		   test-pledge.c \
diff --git a/configure b/configure
index def91028..f5d8f3e1 100755
--- a/configure
+++ b/configure
@@ -50,6 +50,7 @@ BUILD_CGI=0
 
 HAVE_DIRENT_NAMLEN=
 HAVE_EFTYPE=
+HAVE_ENDIAN=
 HAVE_ERR=
 HAVE_FTS=
 HAVE_GETLINE=
@@ -57,6 +58,7 @@ HAVE_GETSUBOPT=
 HAVE_ISBLANK=
 HAVE_MKDTEMP=
 HAVE_NANOSLEEP=
+HAVE_NTOHL=
 HAVE_OHASH=
 HAVE_PATH_MAX=
 HAVE_PLEDGE=
@@ -72,6 +74,7 @@ HAVE_STRLCPY=
 HAVE_STRPTIME=
 HAVE_STRSEP=
 HAVE_STRTONUM=
+HAVE_SYS_ENDIAN=
 HAVE_VASPRINTF=
 HAVE_WCHAR=
 
@@ -197,6 +200,8 @@ get_locale() {
 
 # --- library functions ---
 runtest dirent-namlen	DIRENT_NAMLEN	|| true
+runtest be32toh		ENDIAN		|| true
+runtest be32toh		SYS_ENDIAN	-DSYS_ENDIAN || true
 runtest EFTYPE		EFTYPE		|| true
 runtest err		ERR		|| true
 runtest fts		FTS		|| true
@@ -204,6 +209,7 @@ runtest getline		GETLINE		|| true
 runtest getsubopt	GETSUBOPT	|| true
 runtest isblank		ISBLANK		|| true
 runtest mkdtemp		MKDTEMP		|| true
+runtest ntohl		NTOHL		|| true
 runtest PATH_MAX	PATH_MAX	|| true
 runtest pledge		PLEDGE		|| true
 runtest sandbox_init	SANDBOX_INIT	|| true
@@ -220,6 +226,14 @@ runtest strsep		STRSEP		|| true
 runtest strtonum	STRTONUM	|| true
 runtest vasprintf	VASPRINTF	|| true
 
+if [ ${HAVE_ENDIAN} -eq 0 -a \
+     ${HAVE_SYS_ENDIAN} -eq 0 -a \
+     ${HAVE_NTOHL} -eq 0 ]; then
+	echo "FATAL: no endian conversion functions found" 1>&2
+	echo "FATAL: no endian conversion functions found" 1>&3
+	exit 1
+fi
+
 # --- wide character and locale support ---
 if get_locale; then
 	runtest wchar WCHAR -DUTF8_LOCALE=\"${UTF8_LOCALE}\" || true
@@ -296,15 +310,21 @@ echo "#define MANPATH_DEFAULT \"${MANPATH_DEFAULT}\""
 [ -n "${HOMEBREWDIR}" ] && echo "#define HOMEBREWDIR \"${HOMEBREWDIR}\""
 [ ${HAVE_EFTYPE} -eq 0 ] && echo "#define EFTYPE EINVAL"
 [ ${HAVE_PATH_MAX} -eq 0 ] && echo "#define PATH_MAX 4096"
+if [ ${HAVE_ENDIAN} -eq 0 -a ${HAVE_SYS_ENDIAN} -eq 0 ]; then
+	echo "#define be32toh ntohl"
+	echo "#define htobe32 htonl"
+fi
 
 cat << __HEREDOC__
 #define HAVE_DIRENT_NAMLEN ${HAVE_DIRENT_NAMLEN}
+#define HAVE_ENDIAN ${HAVE_ENDIAN}
 #define HAVE_ERR ${HAVE_ERR}
 #define HAVE_FTS ${HAVE_FTS}
 #define HAVE_GETLINE ${HAVE_GETLINE}
 #define HAVE_GETSUBOPT ${HAVE_GETSUBOPT}
 #define HAVE_ISBLANK ${HAVE_ISBLANK}
 #define HAVE_MKDTEMP ${HAVE_MKDTEMP}
+#define HAVE_NTOHL ${HAVE_NTOHL}
 #define HAVE_PLEDGE ${HAVE_PLEDGE}
 #define HAVE_PROGNAME ${HAVE_PROGNAME}
 #define HAVE_REALLOCARRAY ${HAVE_REALLOCARRAY}
@@ -318,6 +338,7 @@ cat << __HEREDOC__
 #define HAVE_STRPTIME ${HAVE_STRPTIME}
 #define HAVE_STRSEP ${HAVE_STRSEP}
 #define HAVE_STRTONUM ${HAVE_STRTONUM}
+#define HAVE_SYS_ENDIAN ${HAVE_SYS_ENDIAN}
 #define HAVE_VASPRINTF ${HAVE_VASPRINTF}
 #define HAVE_WCHAR ${HAVE_WCHAR}
 #define HAVE_OHASH ${HAVE_OHASH}
diff --git a/configure.local.example b/configure.local.example
index d9652f1d..1c68e4b5 100644
--- a/configure.local.example
+++ b/configure.local.example
@@ -227,6 +227,7 @@ CFLAGS="-g"
 # be regarded as successful).
 
 HAVE_DIRENT_NAMLEN=0
+HAVE_ENDIAN=0
 HAVE_EFTYPE=0
 HAVE_ERR=0
 HAVE_FTS=0
@@ -234,6 +235,7 @@ HAVE_GETLINE=0
 HAVE_GETSUBOPT=0
 HAVE_ISBLANK=0
 HAVE_MKDTEMP=0
+HAVE_NTOHL=0
 HAVE_OHASH=0
 HAVE_PATH_MAX=0
 HAVE_PLEDGE=0
@@ -248,5 +250,6 @@ HAVE_STRLCPY=0
 HAVE_STRPTIME=0
 HAVE_STRSEP=0
 HAVE_STRTONUM=0
+HAVE_SYS_ENDIAN=0
 HAVE_VASPRINTF=0
 HAVE_WCHAR=0
diff --git a/dba.c b/dba.c
index 3104fbb2..d5fd5b85 100644
--- a/dba.c
+++ b/dba.c
@@ -17,8 +17,16 @@
  * Allocation-based version of the mandoc database, for read-write access.
  * The interface is defined in "dba.h".
  */
+#include "config.h"
+
 #include <sys/types.h>
+#if HAVE_ENDIAN
 #include <endian.h>
+#elif HAVE_SYS_ENDIAN
+#include <sys/endian.h>
+#elif HAVE_NTOHL
+#include <arpa/inet.h>
+#endif
 #include <errno.h>
 #include <stdint.h>
 #include <stdlib.h>
diff --git a/dba_write.c b/dba_write.c
index 8b911f90..80574518 100644
--- a/dba_write.c
+++ b/dba_write.c
@@ -20,7 +20,13 @@
 #include "config.h"
 
 #include <assert.h>
+#if HAVE_ENDIAN
 #include <endian.h>
+#elif HAVE_SYS_ENDIAN
+#include <sys/endian.h>
+#elif HAVE_NTOHL
+#include <arpa/inet.h>
+#endif
 #if HAVE_ERR
 #include <err.h>
 #endif
diff --git a/dbm.c b/dbm.c
index 3b3ebef7..0576c002 100644
--- a/dbm.c
+++ b/dbm.c
@@ -20,7 +20,13 @@
 #include "config.h"
 
 #include <assert.h>
+#if HAVE_ENDIAN
 #include <endian.h>
+#elif HAVE_SYS_ENDIAN
+#include <sys/endian.h>
+#elif HAVE_NTOHL
+#include <arpa/inet.h>
+#endif
 #if HAVE_ERR
 #include <err.h>
 #endif
diff --git a/dbm_map.c b/dbm_map.c
index cae53553..b4d5bb80 100644
--- a/dbm_map.c
+++ b/dbm_map.c
@@ -24,7 +24,13 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
+#if HAVE_ENDIAN
 #include <endian.h>
+#elif HAVE_SYS_ENDIAN
+#include <sys/endian.h>
+#elif HAVE_NTOHL
+#include <arpa/inet.h>
+#endif
 #if HAVE_ERR
 #include <err.h>
 #endif
diff --git a/test-be32toh.c b/test-be32toh.c
new file mode 100644
index 00000000..471e85ea
--- /dev/null
+++ b/test-be32toh.c
@@ -0,0 +1,11 @@
+#ifdef SYS_ENDIAN
+#include <sys/endian.h>
+#else
+#include <endian.h>
+#endif
+
+int
+main(void)
+{
+	return htobe32(be32toh(0x3a7d0cdb)) != 0x3a7d0cdb;
+}
diff --git a/test-ntohl.c b/test-ntohl.c
new file mode 100644
index 00000000..52dcc256
--- /dev/null
+++ b/test-ntohl.c
@@ -0,0 +1,7 @@
+#include <arpa/inet.h>
+
+int
+main(void)
+{
+	return htonl(ntohl(0x3a7d0cdb)) != 0x3a7d0cdb;
+}