Add a compat/strtoumax.c for Solaris 8.

Solaris 8 was pre-c99, and they weren't willing to commit to
the strtoumax definition according to /usr/include/inttypes.h.

This adds NO_STRTOUMAX and NO_STRTOULL for ancient systems.
If NO_STRTOUMAX is defined, the routine in compat/strtoumax.c
will be used instead.  That routine passes its arguments to
strtoull unless NO_STRTOULL is defined.  If NO_STRTOULL, then
the routine uses strtoul (unsigned long).

Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu>
Acked-by: Shawn O Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -28,6 +28,10 @@ all::
 #
 # Define NO_STRLCPY if you don't have strlcpy.
 #
+# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
+# If your compiler also does not support long long or does not have
+# strtoull, define NO_STRTOULL.
+#
 # Define NO_SETENV if you don't have setenv in the C library.
 #
 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
@@ -353,11 +357,13 @@ ifeq ($(uname_S),SunOS)
 		NO_UNSETENV = YesPlease
 		NO_SETENV = YesPlease
 		NO_C99_FORMAT = YesPlease
+		NO_STRTOUMAX = YesPlease
 	endif
 	ifeq ($(uname_R),5.9)
 		NO_UNSETENV = YesPlease
 		NO_SETENV = YesPlease
 		NO_C99_FORMAT = YesPlease
+		NO_STRTOUMAX = YesPlease
 	endif
 	INSTALL = ginstall
 	TAR = gtar
@@ -517,6 +523,13 @@ ifdef NO_STRLCPY
 	COMPAT_CFLAGS += -DNO_STRLCPY
 	COMPAT_OBJS += compat/strlcpy.o
 endif
+ifdef NO_STRTOUMAX
+	COMPAT_CFLAGS += -DNO_STRTOUMAX
+	COMPAT_OBJS += compat/strtoumax.o
+endif
+ifdef NO_STRTOULL
+	COMPAT_CFLAGS += -DNO_STRTOULL
+endif
 ifdef NO_SETENV
 	COMPAT_CFLAGS += -DNO_SETENV
 	COMPAT_OBJS += compat/setenv.o

compat/strtoumax.c

@@ -0,0 +1,10 @@
+#include "../git-compat-util.h"
+
+uintmax_t gitstrtoumax (const char *nptr, char **endptr, int base)
+{
+#if defined(NO_STRTOULL)
+	return strtoul(nptr, endptr, base);
+#else
+	return strtoull(nptr, endptr, base);
+#endif
+}

git-compat-util.h

@@ -139,6 +139,11 @@ extern char *gitstrcasestr(const char *haystack, const char *needle);
 extern size_t gitstrlcpy(char *, const char *, size_t);
 #endif
 
+#ifdef NO_STRTOUMAX
+#define strtoumax gitstrtoumax
+extern uintmax_t gitstrtoumax(const char *, char **, int);
+#endif
+
 extern void release_pack_memory(size_t);
 
 static inline char* xstrdup(const char *str)