Add configure option to create static htop binary

5 files changed, 171 insertions, 33 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ba0b5bff..c19cce40 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,6 +91,25 @@ jobs:
     - name: Distcheck
       run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-setuid --enable-delayacct --enable-sensors --enable-capabilities'
 
+  build-ubuntu-latest-gcc-static:
+    runs-on: ubuntu-latest
+    # Enable LTO, might trigger additional warnings on advanced inlining
+    env:
+      CFLAGS: -O3 -g -flto
+      LDFLAGS: -O3 -g -flto
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install libncursesw5-dev libtinfo-dev libgpm-dev libsensors4-dev libcap-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-static --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --disable-hwloc --enable-setuid --disable-delayacct --enable-sensors --enable-capabilities
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-static --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --disable-hwloc --enable-setuid --disable-delayacct --enable-sensors --enable-capabilities'
+
   build-ubuntu-latest-clang-analyzer:
     runs-on: ubuntu-latest
     env:
diff --git a/README b/README
index 47d40b13..609c2795 100644
--- a/README
+++ b/README
@@ -61,6 +61,9 @@ By default `make install` will install into `/usr/local`, for changing the path
   * `--enable-setuid`:
     enable setuid support for privilege dropping
     default: *no*
+  *`--enable-static`:
+    build a static htop binary; hwloc and delay accounting are not supported
+    default: *no*
   * `--enable-debug`:
     Enable asserts and internal sanity checks; implies a performance penalty
     default: *no*
diff --git a/configure.ac b/configure.ac
index d873cba7..9df9e060 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,6 +72,31 @@ AS_IF([test "x$ac_cv_prog_cc_c99" = xno], [AC_MSG_ERROR([htop is written in C99.
 
 
 # ----------------------------------------------------------------------
+# Checks for static build.
+# ----------------------------------------------------------------------
+
+AC_ARG_ENABLE([static],
+              [AS_HELP_STRING([--enable-static],
+                              [build a static htop binary @<:@default=no@:>@])],
+              [],
+              [enable_static=no])
+case "$enable_static" in
+   no)
+      ;;
+   yes)
+      AC_DEFINE([BUILD_STATIC], [1], [Define if building static binary.])
+      CFLAGS="$CFLAGS -static"
+      LDFLAGS="$LDFLAGS -static"
+      ;;
+   *)
+      AC_MSG_ERROR([bad value '$enable_static' for --enable-static option])
+      ;;
+esac
+
+# ----------------------------------------------------------------------
+
+
+# ----------------------------------------------------------------------
 # Checks for generic header files.
 # ----------------------------------------------------------------------
 
@@ -137,7 +162,9 @@ if test "$my_htop_platform" = freebsd; then
 fi
 
 if test "$my_htop_platform" = linux; then
-   AC_SEARCH_LIBS([dlopen], [dl dld], [], [AC_MSG_ERROR([can not find required function dlopen()])])
+   if test "$enable_static" != yes; then
+      AC_SEARCH_LIBS([dlopen], [dl dld], [], [AC_MSG_ERROR([can not find required function dlopen()])])
+   fi
 fi
 
 if test "$my_htop_platform" = openbsd; then
@@ -170,6 +197,10 @@ if test "$my_htop_platform" = darwin; then
    AC_CHECK_FUNCS([mach_timebase_info])
 fi
 
+if test "$my_htop_platform" = linux && test "x$enable_static" = xyes; then
+   AC_CHECK_LIB([systemd], [sd_bus_open_system])
+fi
+
 # ----------------------------------------------------------------------
 
 
@@ -189,10 +220,8 @@ m4_define([HTOP_CHECK_SCRIPT],
       htop_config_script_cflags=$([$4] --cflags 2> /dev/null)
    fi
    htop_script_success=no
-   htop_save_LDFLAGS="$LDFLAGS"
    htop_save_CFLAGS="$CFLAGS"
    if test ! "x$htop_config_script_libs" = x; then
-      LDFLAGS="$htop_config_script_libs $LDFLAGS"
       CFLAGS="$htop_config_script_cflags $CFLAGS"
       AC_CHECK_LIB([$1], [$2], [
          AC_DEFINE([$3], 1, [The library is present.])
@@ -200,8 +229,9 @@ m4_define([HTOP_CHECK_SCRIPT],
          htop_script_success=yes
       ], [
          CFLAGS="$htop_save_CFLAGS"
+      ], [
+         $htop_config_script_libs
       ])
-      LDFLAGS="$htop_save_LDFLAGS"
    fi
    if test "x$htop_script_success" = xno; then
       [$5]
@@ -212,7 +242,7 @@ m4_define([HTOP_CHECK_SCRIPT],
 m4_define([HTOP_CHECK_LIB],
 [
    AC_CHECK_LIB([$1], [$2], [
-      AC_DEFINE([$3], 1, [The library is present.])
+      AC_DEFINE([$3], [1], [The library is present.])
       LIBS="-l[$1] $LIBS "
    ], [$4])
 ])
@@ -223,13 +253,13 @@ AC_ARG_ENABLE([unicode],
               [],
               [enable_unicode=yes])
 if test "x$enable_unicode" = xyes; then
-   HTOP_CHECK_SCRIPT([ncursesw6], [addnwstr], [HAVE_LIBNCURSESW], "ncursesw6-config",
-    HTOP_CHECK_SCRIPT([ncursesw], [addnwstr], [HAVE_LIBNCURSESW], "ncursesw6-config",
-     HTOP_CHECK_SCRIPT([ncursesw], [addnwstr], [HAVE_LIBNCURSESW], "ncursesw5-config",
-      HTOP_CHECK_SCRIPT([ncurses], [addnwstr], [HAVE_LIBNCURSESW], "ncurses5-config",
-       HTOP_CHECK_LIB([ncursesw6], [addnwstr], [HAVE_LIBNCURSESW],
-        HTOP_CHECK_LIB([ncursesw], [addnwstr], [HAVE_LIBNCURSESW],
-         HTOP_CHECK_LIB([ncurses], [addnwstr], [HAVE_LIBNCURSESW],
+   HTOP_CHECK_SCRIPT([ncursesw6], [waddnwstr], [HAVE_LIBNCURSESW], "ncursesw6-config",
+    HTOP_CHECK_SCRIPT([ncursesw], [waddnwstr], [HAVE_LIBNCURSESW], "ncursesw6-config",
+     HTOP_CHECK_SCRIPT([ncursesw], [waddnwstr], [HAVE_LIBNCURSESW], "ncursesw5-config",
+      HTOP_CHECK_SCRIPT([ncurses], [waddnwstr], [HAVE_LIBNCURSESW], "ncurses5-config",
+       HTOP_CHECK_LIB([ncursesw6], [waddnwstr], [HAVE_LIBNCURSESW],
+        HTOP_CHECK_LIB([ncursesw], [waddnwstr], [HAVE_LIBNCURSESW],
+         HTOP_CHECK_LIB([ncurses], [waddnwstr], [HAVE_LIBNCURSESW],
           AC_MSG_ERROR([can not find required library libncursesw; you may want to use --disable-unicode])
    )))))))
 
@@ -243,10 +273,10 @@ if test "x$enable_unicode" = xyes; then
    # (at this point we already link against a working ncurses library with wide character support)
    AC_SEARCH_LIBS([keypad], [tinfow tinfo])
 else
-   HTOP_CHECK_SCRIPT([ncurses6], [refresh], [HAVE_LIBNCURSES], [ncurses6-config],
-    HTOP_CHECK_SCRIPT([ncurses], [refresh], [HAVE_LIBNCURSES], [ncurses5-config],
-     HTOP_CHECK_LIB([ncurses6],  [refresh], [HAVE_LIBNCURSES],
-      HTOP_CHECK_LIB([ncurses],  [refresh], [HAVE_LIBNCURSES],
+   HTOP_CHECK_SCRIPT([ncurses6], [wnoutrefresh], [HAVE_LIBNCURSES], [ncurses6-config],
+    HTOP_CHECK_SCRIPT([ncurses], [wnoutrefresh], [HAVE_LIBNCURSES], [ncurses5-config],
+     HTOP_CHECK_LIB([ncurses6],  [wnoutrefresh], [HAVE_LIBNCURSES],
+      HTOP_CHECK_LIB([ncurses],  [wnoutrefresh], [HAVE_LIBNCURSES],
        AC_MSG_ERROR([can not find required library libncurses])
    ))))
 
@@ -260,6 +290,9 @@ else
    # (at this point we already link against a working ncurses library)
    AC_SEARCH_LIBS([keypad], [tinfo])
 fi
+if test "$enable_static" = yes; then
+   AC_SEARCH_LIBS([Gpm_GetEvent], [gpm])
+fi
 
 
 AC_ARG_ENABLE([hwloc],
@@ -405,20 +438,24 @@ case "$enable_delayacct" in
    no)
       ;;
    check)
-      m4_ifdef([PKG_PROG_PKG_CONFIG], [
-         enable_delayacct=yes
-         PKG_PROG_PKG_CONFIG()
-         PKG_CHECK_MODULES(LIBNL3, libnl-3.0, [], [enable_delayacct=no])
-         PKG_CHECK_MODULES(LIBNL3GENL, libnl-genl-3.0, [], [enable_delayacct=no])
-         if test "$enable_delayacct" = yes; then
-            CFLAGS="$CFLAGS $LIBNL3_CFLAGS $LIBNL3GENL_CFLAGS"
-            LIBS="$LIBS $LIBNL3_LIBS $LIBNL3GENL_LIBS"
-            AC_DEFINE([HAVE_DELAYACCT], [1], [Define if delay accounting support should be enabled.])
-         fi
-      ], [
+      if test "$enable_static" = yes; then
          enable_delayacct=no
-         AC_MSG_NOTICE([Linux delay accounting support can not be enabled, cause pkg-config is required for checking its availability])
-      ])
+      else
+         m4_ifdef([PKG_PROG_PKG_CONFIG], [
+            enable_delayacct=yes
+            PKG_PROG_PKG_CONFIG()
+            PKG_CHECK_MODULES(LIBNL3, libnl-3.0, [], [enable_delayacct=no])
+            PKG_CHECK_MODULES(LIBNL3GENL, libnl-genl-3.0, [], [enable_delayacct=no])
+            if test "$enable_delayacct" = yes; then
+               CFLAGS="$CFLAGS $LIBNL3_CFLAGS $LIBNL3GENL_CFLAGS"
+               LIBS="$LIBS $LIBNL3_LIBS $LIBNL3GENL_LIBS"
+               AC_DEFINE([HAVE_DELAYACCT], [1], [Define if delay accounting support should be enabled.])
+            fi
+         ], [
+            enable_delayacct=no
+            AC_MSG_NOTICE([Linux delay accounting support can not be enabled, cause pkg-config is required for checking its availability])
+         ])
+      fi
       ;;
    yes)
       m4_ifdef([PKG_PROG_PKG_CONFIG], [
@@ -450,10 +487,16 @@ case "$enable_sensors" in
       ;;
    check)
       enable_sensors=yes
+      if test "$enable_static" = yes; then
+         AC_CHECK_LIB([sensors], [sensors_init], [], [enable_sensors=no])
+      fi
       AC_CHECK_HEADERS([sensors/sensors.h], [], [enable_sensors=no])
       ;;
    yes)
-      AC_CHECK_HEADERS([sensors/sensors.h], [], [AC_MSG_ERROR([can not find required header file ensors/sensors.h])])
+      if test "$enable_static" = yes; then
+         AC_CHECK_LIB([sensors], [sensors_init], [], [AC_MSG_ERROR([can not find required library libsensors])])
+      fi
+      AC_CHECK_HEADERS([sensors/sensors.h], [], [AC_MSG_ERROR([can not find required header file sensors/sensors.h])])
       ;;
    *)
       AC_MSG_ERROR([bad value '$enable_sensors' for --enable-sensors])
@@ -576,4 +619,5 @@ AC_MSG_RESULT([
   hwloc:                     $enable_hwloc
   setuid:                    $enable_setuid
   debug:                     $enable_debug
+  static:                    $enable_static
 ])
diff --git a/linux/LibSensors.c b/linux/LibSensors.c
index 158829aa..f94bcff7 100644
--- a/linux/LibSensors.c
+++ b/linux/LibSensors.c
@@ -10,6 +10,19 @@
 #include "XUtils.h"
 
 
+#ifdef BUILD_STATIC
+
+#define sym_sensors_init sensors_init
+#define sym_sensors_cleanup sensors_cleanup
+#define sym_sensors_get_detected_chips sensors_get_detected_chips
+#define sym_sensors_snprintf_chip_name sensors_snprintf_chip_name
+#define sym_sensors_get_features sensors_get_features
+#define sym_sensors_get_subfeature sensors_get_subfeature
+#define sym_sensors_get_value sensors_get_value
+#define sym_sensors_get_label sensors_get_label
+
+#else
+
 static int (*sym_sensors_init)(FILE*);
 static void (*sym_sensors_cleanup)(void);
 static const sensors_chip_name* (*sym_sensors_get_detected_chips)(const sensors_chip_name*, int*);
@@ -21,7 +34,15 @@ static char* (*sym_sensors_get_label)(const sensors_chip_name*, const sensors_fe
 
 static void* dlopenHandle = NULL;
 
+#endif /* BUILD_STATIC */
+
 int LibSensors_init(FILE* input) {
+#ifdef BUILD_STATIC
+
+   return sym_sensors_init(input);
+
+#else
+
    if (!dlopenHandle) {
       /* Find the unversioned libsensors.so (symlink) and prefer that, but Debian has .so.5 and Fedora .so.4 without
          matching symlinks (unless people install the -dev packages) */
@@ -56,29 +77,42 @@ int LibSensors_init(FILE* input) {
 
    return sym_sensors_init(input);
 
+
 dlfailure:
    if (dlopenHandle) {
       dlclose(dlopenHandle);
       dlopenHandle = NULL;
    }
    return -1;
+
+#endif /* BUILD_STATIC */
 }
 
 void LibSensors_cleanup(void) {
+#ifdef BUILD_STATIC
+
+   sym_sensors_cleanup();
+
+#else
+
    if (dlopenHandle) {
       sym_sensors_cleanup();
 
       dlclose(dlopenHandle);
       dlopenHandle = NULL;
    }
+
+#endif /* BUILD_STATIC */
 }
 
 void LibSensors_getCPUTemperatures(CPUData* cpus, unsigned int cpuCount) {
    for (unsigned int i = 0; i <= cpuCount; i++)
       cpus[i].temperature = NAN;
 
+#ifndef BUILD_STATIC
    if (!dlopenHandle)
       return;
+#endif /* !BUILD_STATIC */
 
    unsigned int coreTempCount = 0;
 
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 : "???");
 }