build: use --gc-sections, -fvisibility=hidden

After:
  # ls -l /sbin/udevadm /sbin/udevd /lib/udev/*_id
  -rwxr-xr-x 1 root root  22984 May 18 18:19 /lib/udev/ata_id
  -rwxr-xr-x 1 root root  31208 May 18 18:19 /lib/udev/cdrom_id
  -rwxr-xr-x 1 root root  27128 May 18 18:19 /lib/udev/input_id
  -rwxr-xr-x 1 root root  31272 May 18 18:19 /lib/udev/path_id
  -rwxr-xr-x 1 root root  31896 May 18 18:19 /lib/udev/scsi_id
  -rwxr-xr-x 1 root root  35456 May 18 18:19 /lib/udev/usb_id
  -rwxr-xr-x 1 root root   6416 May 18 18:19 /lib/udev/v4l_id
  -rwxr-xr-x 1 root root 130320 May 18 18:19 /sbin/udevadm
  -rwxr-xr-x 1 root root 134648 May 18 18:19 /sbin/udevd

Before:
  # ls -l /sbin/udevadm /sbin/udevd /lib/udev/*_id
  -rwxr-xr-x 1 root root  27208 May 18 18:22 /lib/udev/ata_id
  -rwxr-xr-x 1 root root  35456 May 18 18:22 /lib/udev/cdrom_id
  -rwxr-xr-x 1 root root  39584 May 18 18:22 /lib/udev/input_id
  -rwxr-xr-x 1 root root  39600 May 18 18:22 /lib/udev/path_id
  -rwxr-xr-x 1 root root  36056 May 18 18:22 /lib/udev/scsi_id
  -rwxr-xr-x 1 root root  43712 May 18 18:22 /lib/udev/usb_id
  -rwxr-xr-x 1 root root   6504 May 18 18:22 /lib/udev/v4l_id
  -rwxr-xr-x 1 root root 142656 May 18 18:22 /sbin/udevadm
  -rwxr-xr-x 1 root root 142888 May 18 18:22 /sbin/udevd

diff --git a/Makefile.am b/Makefile.am
index 0a340aa39180c795561d224ef0e3f9c8dedada63..1b0d6a3797b4efcbe32a1ab98ee0db3277b9461c 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,7 +17,13 @@ AM_CPPFLAGS = \
        -DSYSCONFDIR=\""$(sysconfdir)"\" \
        -DLIBEXECDIR=\""$(libexecdir)"\"
 
+AM_CFLAGS = \
+       -fvisibility=hidden \
+       -ffunction-sections \
+       -fdata-sections
+
 AM_LDFLAGS = \
+       -Wl,--gc-sections \
        -Wl,--as-needed
 
 DISTCHECK_CONFIGURE_FLAGS = \
@@ -54,6 +60,9 @@ libudev_libudev_la_SOURCES =\
        libudev/libudev-monitor.c \
        libudev/libudev-queue.c
 
+libudev_libudev_la_CFLAGS = \
+       -fvisibility=default
+
 libudev_libudev_la_LDFLAGS = \
        -version-info $(LIBUDEV_CURRENT):$(LIBUDEV_REVISION):$(LIBUDEV_AGE) \
        -export-symbols $(top_srcdir)/libudev/exported_symbols
@@ -404,7 +413,11 @@ extras_gudev_libgudev_1_0_la_CPPFLAGS = \
        -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT \
        -D_GUDEV_COMPILATION \
        -DG_LOG_DOMAIN=\"GUdev\"
-extras_gudev_libgudev_1_0_la_CFLAGS = $(GLIB_CFLAGS)
+
+extras_gudev_libgudev_1_0_la_CFLAGS = \
+       -fvisibility=default \
+       $(GLIB_CFLAGS)
+
 extras_gudev_libgudev_1_0_la_LIBADD = libudev/libudev.la $(GLIB_LIBS)
 
 extras_gudev_libgudev_1_0_la_LDFLAGS = \
@@ -434,20 +447,20 @@ extras/gudev/gudevenumtypes.c: extras/gudev/gudevenumtypes.c.template extras/gud
            $@.tmp && mv $@.tmp $@
 
 if ENABLE_INTROSPECTION
-extras/gudev/GUdev-1.0.gir: extras/gudev/libgudev-1.0.la $(G_IR_SCANNER) Makefile.am
-       $(AM_V_GEN)PKG_CONFIG_PATH=$(top_builddir)/data:$$PKG_CONFIG_PATH \
-       LD_LIBRARY_PATH=$(top_builddir)/extras/gudev:$$LD_LIBRARY_PATH \
-       $(G_IR_SCANNER) -v \
+extras/gudev/GUdev-1.0.gir: extras/gudev/libgudev-1.0.la $(G_IR_SCANNER)
+       $(AM_V_GEN)$(G_IR_SCANNER) -v \
+               --warn-all \
                --namespace GUdev \
                --nsversion=1.0 \
                --include=GObject-2.0 \
                --library=gudev-1.0 \
-               --library-path=extras/gudev \
+               --library-path=$(top_builddir)/libudev \
+               --library-path=$(top_builddir)/extras/gudev \
                --output $@ \
                --pkg=glib-2.0 \
                --pkg=gobject-2.0 \
-               -I$(top_builddir)/extras \
                -I$(top_srcdir)/extras \
+               -I$(top_builddir)/extras \
                -D_GUDEV_COMPILATION \
                -D_GUDEV_WORK_AROUND_DEV_T_BUG \
                $(top_srcdir)/extras/gudev/gudev.h \