Separate display from sampling in SysArch and Hostname Meters

Several of our newer meters have merged coding concerns in terms
of extracting values and displaying those values.  This commit
rectifies that for the SysArch and Hostname meters, allowing use
of this code with alternative front/back ends.  The SysArch code
is also refined to detect whether the platform has an os-release
file at all and/or the sys/utsname.h header via configure.ac.

1 files changed, 16 insertions, 0 deletions

diff --git a/Generic.h b/Generic.h
new file mode 100644
index 00000000..44adc09e
--- /dev/null
+++ b/Generic.h
@@ -0,0 +1,16 @@
+#ifndef HEADER_Generic
+#define HEADER_Generic
+/*
+htop - Generic.h
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <stddef.h>
+
+void Generic_Hostname(char* buffer, size_t size);
+
+char* Generic_OSRelease(void);
+
+#endif