[Buildroot] host-ncurses: cannot find -lstdc++

[Buildroot] host-ncurses: cannot find -lstdc++

[Quotient Remainder]

OK, possibly a little bit OT since this isn't actually in mainline but
it's very close and may be useful.
I "added" host-ncurses by applying this trivial patch.

--8<--
diff --git a/package/ncurses/ncurses.mk b/package/ncurses/ncurses.mk
index 0a49887..0aa66d7 100644
--- a/package/ncurses/ncurses.mk
+++ b/package/ncurses/ncurses.mk
@@ -121,3 +121,4 @@ define NCURSES_INSTALL_TARGET_CMDS
 endef # NCURSES_INSTALL_TARGET_CMDS
 
 $(eval $(call AUTOTARGETS,package,ncurses))
+$(eval $(call AUTOTARGETS,package,ncurses,host))
-->8--

Minimum test case is configure for ARM CodeSourcery 2010q1 and try "make
dirs cross && make host-ncurses".

        make[2]: Entering directory `/home/qvr/obair/community/buildroot/output/build/host-ncurses-5.7/c++'
        /usr/lib64/ccache/g++  -o demo ../objects/demo.o -L../lib -lncurses++ -static -L../lib -lform -lmenu -lpanel -lncurses  -dynamic  -L/home/qvr/obair/community/buildroot/output/host/lib -L/home/qvr/obair/community/buildroot/output/host/usr/lib -Wl,-rpath,/home/qvr/obair/community/buildroot/output/host/usr/lib  -I../c++ -I../include -I. -DHAVE_CONFIG_H -I. -I../include  -D_GNU_SOURCE -DNDEBUG -I/home/qvr/obair/community/buildroot/output/host/usr/include/ncurses -I/home/qvr/obair/community/buildroot/output/host/include -I/home/qvr/obair/community/buildroot/output/host/usr/include 
        /usr/bin/ld: cannot find -lstdc++
        collect2: ld returned 1 exit status
        make[2]: *** [demo] Error 1
        make[2]: Leaving directory `/home/qvr/obair/community/buildroot/output/build/host-ncurses-5.7/c++'


"locate libstdc++.so" gives:
        /usr/lib/libstdc++.so.6
        /usr/lib/libstdc++.so.6.0.14
        /usr/lib/gcc/x86_64-redhat-linux/4.5.1/libstdc++.so
        /usr/lib/gcc/x86_64-redhat-linux/4.5.1/32/libstdc++.so
        /usr/lib64/libstdc++.so.5
        /usr/lib64/libstdc++.so.5.0.7
        /usr/lib64/libstdc++.so.6
        /usr/lib64/libstdc++.so.6.0.14
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/armv4t/usr/lib/libstdc++.so
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/armv4t/usr/lib/libstdc++.so.6
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/armv4t/usr/lib/libstdc++.so.6.0.12
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/thumb2/usr/lib/libstdc++.so
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/thumb2/usr/lib/libstdc++.so.6
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/thumb2/usr/lib/libstdc++.so.6.0.12
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/usr/lib/libstdc++.so
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/usr/lib/libstdc++.so.6
        /home/qvr/CodeSourcery/Sourcery_G++_Lite/arm-none-linux-gnueabi/libc/usr/lib/libstdc++.so.6.0.12

I don't see anything specifically on libstdc++ on the list previously.
Build machine x86_64 running Fedora 14 with make downgraded to v3.81.
Any ideas?

[Buildroot] host-ncurses: cannot find -lstdc++

[Mike Frysinger]

On Fri, Dec 10, 2010 at 12:44 PM, Quotient Remainder wrote:
> ? ? ? ?make[2]: Entering directory `/home/qvr/obair/community/buildroot/output/build/host-ncurses-5.7/c++'
> ? ? ? ?/usr/lib64/ccache/g++ ?-o demo ../objects/demo.o -L../lib -lncurses++ -static -L../lib -lform -lmenu -lpanel -lncurses ?-dynamic ?-L/home/qvr/obair/community/buildroot/output/host/lib -L/home/qvr/obair/community/buildroot/output/host/usr/lib -Wl,-rpath,/home/qvr/obair/community/buildroot/output/host/usr/lib ?-I../c++ -I../include -I. -DHAVE_CONFIG_H -I. -I../include ?-D_GNU_SOURCE -DNDEBUG -I/home/qvr/obair/community/buildroot/output/host/usr/include/ncurses -I/home/qvr/obair/community/buildroot/output/host/include -I/home/qvr/obair/community/buildroot/output/host/usr/include
> ? ? ? ?/usr/bin/ld: cannot find -lstdc++
> ? ? ? ?collect2: ld returned 1 exit status
> ? ? ? ?make[2]: *** [demo] Error 1

i see no value in building the demos for the host.  if you're after
the helper binaries (like `tic`), then build only the few tools you
actually need.

along those lines, last time i looked, the ncurses build system does
not automatically build up a local `tic` to generate terminfo files.
which means BR' ncurses.mk should be doing this already.  otherwise
you can hit random problems with using the host `tic` which can be a
different version from the one you're cross-compiling.
-mike

[Buildroot] host-ncurses: cannot find -lstdc++

[Quotient Remainder]

Hello Mike,

Ar Aoine, 2010-12-10 ag 13:29 -0500, scr?obh Mike Frysinger:
> i see no value in building the demos for the host.  if you're after
> the helper binaries (like `tic`), then build only the few tools you
> actually need.

It took me a second reading of your message to understand what you were
getting at.  I made the mistake of forgetting that NCURSES_CONF_OPT is
not used in host builds so I added HOST_NCURSES_CONF_OPT and set it to
generate tic, etc.

I don't imagine it will ignite much interest but for any RHEL5
developers experiencing problems building ncurses 5.7 with the host
ncurses 5.5 RPM, this patch should help.  Those without such problems
will curse it [see what I did there ;-) ].


diff --git a/package/ncurses/ncurses.mk b/package/ncurses/ncurses.mk
index 0a49887..499e2af 100644
--- a/package/ncurses/ncurses.mk
+++ b/package/ncurses/ncurses.mk
@@ -27,6 +27,7 @@ NCURSES_VERSION = 5.7
 NCURSES_SITE = $(BR2_GNU_MIRROR)/ncurses
 NCURSES_SOURCE = ncurses-$(NCURSES_VERSION).tar.gz
 NCURSES_INSTALL_STAGING = YES
+NCURSES_DEPENDENCIES = host-ncurses
 
 NCURSES_CONF_OPT = \
        --with-shared \
@@ -43,13 +44,23 @@ NCURSES_CONF_OPT = \
        --enable-broken_linker \
        --disable-static
 
+HOST_NCURSES_CONF_OPT = \
+       --with-shared \
+       --disable-static \
+       --without-cxx-binding \
+
+
 ifneq ($(BR2_ENABLE_DEBUG),y)
 NCURSES_CONF_OPT += --without-debug
 endif
 
 
 define NCURSES_BUILD_CMDS
-       $(MAKE1) -C $(@D) DESTDIR=$(STAGING_DIR)
+       PATH=$(HOST_DIR)/usr/bin:$(PATH) $(MAKE1) -C $(@D) DESTDIR=$(STAGING_DIR)
+endef
+
+define HOST_NCURSES_BUILD_CMDS
+       $(MAKE1) -C $(@D) DESTDIR=$(HOST_DIR)
 endef
 
 define NCURSES_PATCH_NCURSES_CONFIG
@@ -57,7 +68,12 @@ define NCURSES_PATCH_NCURSES_CONFIG
                $(STAGING_DIR)/usr/bin/ncurses5-config
 endef
 
-NCURSES_POST_STAGING_INSTALL_HOOKS += NCURSES_PATCH_NCURSES_CONFIG
+define HOST_NCURSES_PATCH_NCURSES_CONFIG
+       $(SED) 's^prefix="^prefix="$(HOST_DIR)^' \
+               $(HOST_DIR)/usr/bin/ncurses5-config
+endef
+
+HOST_NCURSES_POST_STAGING_INSTALL_HOOKS += HOST_NCURSES_PATCH_NCURSES_CONFIG
 
 ifeq ($(BR2_HAVE_DEVFILES),y)
 define NCURSES_INSTALL_TARGET_DEVFILES
@@ -121,3 +137,4 @@ define NCURSES_INSTALL_TARGET_CMDS
 endef # NCURSES_INSTALL_TARGET_CMDS
 
 $(eval $(call AUTOTARGETS,package,ncurses))
+$(eval $(call AUTOTARGETS,package,ncurses,host))

[Buildroot] host-ncurses: cannot find -lstdc++

[Mike Frysinger]

On Monday, December 13, 2010 07:48:51 Quotient Remainder wrote:
> --- a/package/ncurses/ncurses.mk
> +++ b/package/ncurses/ncurses.mk
>  define NCURSES_BUILD_CMDS
> -       $(MAKE1) -C $(@D) DESTDIR=$(STAGING_DIR)
> +       PATH=$(HOST_DIR)/usr/bin:$(PATH) $(MAKE1) -C $(@D)
> DESTDIR=$(STAGING_DIR)

there's already a HOST_PATH for you to leverage

> +define HOST_NCURSES_PATCH_NCURSES_CONFIG
> +       $(SED) 's^prefix="^prefix="$(HOST_DIR)^' \
> +               $(HOST_DIR)/usr/bin/ncurses5-config
> +endef

doesnt package/Makefile.autotools.in already set prefix to the host dir ?  so 
is this really necessary ?
-mike
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