Add an --enable-caps configure option.

If you must have the binary named "IOR" in all caps, use
the --enable-caps configure option.

configure.ac

@@ -90,6 +90,13 @@ AM_COND_IF([USE_NCMPI_AIORI],[
         AC_DEFINE([USE_NCMPI_AIORI], [], [Build NCMPI backend AIORI])
 ])
 
+# Enable building "IOR", in all capitals
+AC_ARG_ENABLE([caps],
+        [AS_HELP_STRING([--enable-caps],
+          [build "IOR" binary (name is in all-caps) @<:@default=no@:>@])],
+        [], [enable_caps=no])
+AM_CONDITIONAL([USE_CAPS], [test x$enable_caps = xyes])
+
 
 AC_CONFIG_FILES([Makefile
                  src/Makefile

src/Makefile.am

@@ -1,4 +1,7 @@
 bin_PROGRAMS = ior
+if USE_CAPS
+bin_PROGRAMS += IOR
+endif
 
 ior_SOURCES = ior.c utilities.c parse_options.c
 ior_SOURCES += ior.h aiori.h iordef.h
@@ -18,3 +21,6 @@ if USE_NCMPI_AIORI
 ior_SOURCES += aiori-NCMPI.c
 ior_LDADD += -lpnetcdf
 endif
+
+IOR_SOURCES = $(ior_SOURCES)
+IOR_LDADD = $(ior_LDADD)