Add configure option to create static htop binary

1 files changed, 41 insertions, 3 deletions

diff --git a/linux/SystemdMeter.c b/linux/SystemdMeter.c
index 75c666f8..f6dcb3fb 100644
--- a/linux/SystemdMeter.c
+++ b/linux/SystemdMeter.c
@@ -21,8 +21,19 @@ in the source distribution for its full text.
 #include "RichString.h"
 #include "XUtils.h"
 
+#if defined(BUILD_STATIC) && defined(HAVE_LIBSYSTEMD)
+#include <systemd/sd-bus.h>
+#endif
 
-#define INVALID_VALUE ((unsigned int)-1)
+
+#ifdef BUILD_STATIC
+
+#define sym_sd_bus_open_system sd_bus_open_system
+#define sym_sd_bus_get_property_string sd_bus_get_property_string
+#define sym_sd_bus_get_property_trivial sd_bus_get_property_trivial
+#define sym_sd_bus_unref sd_bus_unref
+
+#else
 
 typedef void sd_bus;
 typedef void sd_bus_error;
@@ -30,19 +41,35 @@ static int (*sym_sd_bus_open_system)(sd_bus**);
 static int (*sym_sd_bus_get_property_string)(sd_bus*, const char*, const char*, const char*, const char*, sd_bus_error*, char**);
 static int (*sym_sd_bus_get_property_trivial)(sd_bus*, const char*, const char*, const char*, const char*, sd_bus_error*, char, void*);
 static sd_bus* (*sym_sd_bus_unref)(sd_bus*);
+static void* dlopenHandle = NULL;
+
+#endif /* BUILD_STATIC */
+
+#if !defined(BUILD_STATIC) || defined(HAVE_LIBSYSTEMD)
+static sd_bus* bus = NULL;
+#endif /* !BUILD_STATIC || HAVE_LIBSYSTEMD */
+
+
+#define INVALID_VALUE ((unsigned int)-1)
 
 static char* systemState = NULL;
 static unsigned int nFailedUnits = INVALID_VALUE;
 static unsigned int nInstalledJobs = INVALID_VALUE;
 static unsigned int nNames = INVALID_VALUE;
 static unsigned int nJobs = INVALID_VALUE;
-static void* dlopenHandle = NULL;
-static sd_bus* bus = NULL;
 
 static void SystemdMeter_done(ATTR_UNUSED Meter* this) {
    free(systemState);
    systemState = NULL;
 
+#ifdef BUILD_STATIC
+# ifdef HAVE_LIBSYSTEMD
+   if (bus) {
+      sym_sd_bus_unref(bus);
+   }
+   bus = NULL;
+# endif /* HAVE_LIBSYSTEMD */
+#else /* BUILD_STATIC */
    if (bus && dlopenHandle) {
       sym_sd_bus_unref(bus);
    }
@@ -52,9 +79,12 @@ static void SystemdMeter_done(ATTR_UNUSED Meter* this) {
       dlclose(dlopenHandle);
       dlopenHandle = NULL;
    }
+#endif /* BUILD_STATIC */
 }
 
+#if !defined(BUILD_STATIC) || defined(HAVE_LIBSYSTEMD)
 static int updateViaLib(void) {
+#ifndef BUILD_STATIC
    if (!dlopenHandle) {
       dlopenHandle = dlopen("libsystemd.so.0", RTLD_LAZY);
       if (!dlopenHandle)
@@ -76,6 +106,7 @@ static int updateViaLib(void) {
 
       #undef resolve
    }
+#endif /* !BUILD_STATIC */
 
    int r;
 
@@ -152,13 +183,16 @@ busfailure:
    bus = NULL;
    return -2;
 
+#ifndef BUILD_STATIC
 dlfailure:
    if (dlopenHandle) {
       dlclose(dlopenHandle);
       dlopenHandle = NULL;
    }
    return -1;
+#endif /* !BUILD_STATIC */
 }
+#endif /* !BUILD_STATIC || HAVE_LIBSYSTEMD */
 
 static void updateViaExec(void) {
    int fdpair[2];
@@ -233,8 +267,12 @@ static void SystemdMeter_updateValues(ATTR_UNUSED Meter* this, char* buffer, siz
    systemState = NULL;
    nFailedUnits = nInstalledJobs = nNames = nJobs = INVALID_VALUE;
 
+#if !defined(BUILD_STATIC) || defined(HAVE_LIBSYSTEMD)
    if (updateViaLib() < 0)
       updateViaExec();
+#else
+   updateViaExec();
+#endif /* !BUILD_STATIC || HAVE_LIBSYSTEMD */
 
    xSnprintf(buffer, size, "%s", systemState ? systemState : "???");
 }