Add C89 stdint compatibility

configure

@@ -221,6 +221,7 @@ HAVE_B64_NTOP=
 HAVE_CAPSICUM=
 HAVE_CRYPT=
 HAVE_CRYPT_NEWHASH=
+HAVE_C99_STDINT=
 HAVE_ENDIAN_H=
 HAVE_ERR=
 HAVE_EXPLICIT_BZERO=
@@ -391,6 +392,7 @@ runtest b64_ntop	B64_NTOP "" "" "-lresolv"	  || true
 runtest capsicum	CAPSICUM			  || true
 runtest crypt		CRYPT "" "" "-lcrypt"	  	  || true
 runtest crypt_newhash	CRYPT_NEWHASH		  	  || true
+runtest c99_stdint	C99_STDINT			  || true
 runtest endian_h	ENDIAN_H			  || true
 runtest err		ERR				  || true
 runtest explicit_bzero	EXPLICIT_BZERO			  || true
@@ -513,7 +515,7 @@ fi
 if [ ${HAVE_MD5} -eq 0 -o \
      ${HAVE_SHA2} -eq 0 ]
 then
-	echo "#include <stdint.h> /* C99 [u]int[nn]_t types */"
+	echo "#include \"sj_stdint.h\" /* C99 stdint.h or C89 fallback types */"
 	echo
 fi
 
@@ -555,6 +557,7 @@ cat << __HEREDOC__
 #define HAVE_CAPSICUM ${HAVE_CAPSICUM}
 #define HAVE_CRYPT ${HAVE_CRYPT}
 #define HAVE_CRYPT_NEWHASH ${HAVE_CRYPT_NEWHASH}
+#define HAVE_C99_STDINT ${HAVE_C99_STDINT}
 #define HAVE_ENDIAN_H ${HAVE_ENDIAN_H}
 #define HAVE_ERR ${HAVE_ERR}
 #define HAVE_EXPLICIT_BZERO ${HAVE_EXPLICIT_BZERO}

sj_stdint.h

@@ -0,0 +1,66 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Small fixed-width integer compatibility layer for SJ3.
+ *
+ * In C99 or newer translation units, use <stdint.h>. In C89 translation
+ * units, provide the fixed-width names that SJ3 needs when the host integer
+ * model has matching types.
+ */
+
+#ifndef SJ_STDINT_H_
+#define SJ_STDINT_H_
+
+#if defined(HAVE_C99_STDINT) && HAVE_C99_STDINT && \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+#include <stdint.h>
+#else
+
+#include <limits.h>
+
+#if !defined(UINT8_MAX)
+# if UCHAR_MAX == 255
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+#  define UINT8_MAX UCHAR_MAX
+# else
+#  error "SJ3 requires an 8-bit unsigned char"
+# endif
+#endif
+
+#if !defined(UINT16_MAX)
+# if USHRT_MAX == 65535
+typedef short int16_t;
+typedef unsigned short uint16_t;
+#  define UINT16_MAX USHRT_MAX
+# else
+#  error "SJ3 requires a 16-bit unsigned short"
+# endif
+#endif
+
+#if !defined(UINT32_MAX)
+# if UINT_MAX == 4294967295U
+typedef int int32_t;
+typedef unsigned int uint32_t;
+#  define UINT32_MAX UINT_MAX
+# elif ULONG_MAX == 4294967295UL
+typedef long int32_t;
+typedef unsigned long uint32_t;
+#  define UINT32_MAX ULONG_MAX
+# else
+#  error "SJ3 requires a 32-bit integer type"
+# endif
+#endif
+
+#if !defined(UINT64_MAX) && (ULONG_MAX > 4294967295UL)
+typedef long int64_t;
+typedef unsigned long uint64_t;
+# define UINT64_MAX ULONG_MAX
+#elif !defined(UINT64_MAX) && (defined(_MSC_VER) || defined(_WIN32))
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#endif
+
+#endif
+
+#endif /* SJ_STDINT_H_ */

sj_typedef.h

@@ -40,17 +40,18 @@
 #define	_SJ_TYPEDEF  1
 
 #include <sys/types.h>
+#include "sj_stdint.h"
 
-typedef	unsigned char	TypeGroup;
+typedef	uint8_t		TypeGroup;
-typedef	unsigned char	TypeGram;
+typedef	uint8_t		TypeGram;
-typedef	unsigned short	TypeIdxOfs;
+typedef	uint16_t	TypeIdxOfs;
 typedef	short	TypeDicSeg;
-typedef	unsigned short	TypeDicOfs;
+typedef	uint16_t	TypeDicOfs;
 typedef	ino_t	TypeDicID;
-typedef	unsigned char	TypeCnct;
+typedef	uint8_t		TypeCnct;
-typedef	unsigned short	TypeStyNum;
+typedef	uint16_t	TypeStyNum;
-typedef	unsigned char	TypeClass;
+typedef	uint8_t		TypeClass;
-typedef	unsigned char	TypeBunNum;
+typedef	uint8_t		TypeBunNum;
 
 #ifndef	NULL
 #	define	NULL	0

tests.c

@@ -81,6 +81,27 @@ main(void)
 	return 0;
 }
 #endif /* TEST_CRYPT_NEWHASH */
+#if TEST_C99_STDINT
+#if !defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L)
+# error "C99 is required for stdint.h"
+#endif
+#include <stdint.h>
+
+int
+main(void)
+{
+	uint8_t u8;
+	uint16_t u16;
+	uint32_t u32;
+	uint64_t u64;
+
+	u8 = 0;
+	u16 = 0;
+	u32 = 0;
+	u64 = 0;
+	return (int)(u8 + u16 + u32 + u64);
+}
+#endif /* TEST_C99_STDINT */
 #if TEST_ENDIAN_H
 #if defined(__linux__) || defined(__wasi__)
 # define _DEFAULT_SOURCE