Topic: C++ program does not run despite successful compilation

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Post #1

vivekian

24 Jun 2007, 00:01

Hi,

I am porting my C++ program for OpenWRT on x86 wrap board. The compilation and installation goes through smooth and the makefile is listed below. After installation when i run the program on the node , i get the error : -ash: FileReader: not found. The program uses iostream.h and fstream.h. Any ideas as to what could be the problem here ?

# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# $Id$

include $(TOPDIR)/rules.mk

#These lines concatanate the package name and list the URL location from which the package source code is to be downloaded
PKG_NAME:=filereader
PKG_VERSION:=0.1
PKG_RELEASE:=1

PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://www.cs.uh.edu/~vivekian/downloads/
PKG_MD5SUM:=376710ec6ba0f9fa27697a425a13b438
PKG_CAT:=zcat

PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)

include $(INCLUDE_DIR)/package.mk

#These lines describe what your package does and its place in the menu config
define Package/filereader
SECTION:=net
CATEGORY:=Network
TITLE:=FileReader is a test package
DESCRIPTION:=\
Sample Code \\\
Go For it \\\
It will save you time !
URL:=http://www.cs.uh.edu/~vivekian
endef

#These lines describe where your binary images are to be installed
define Package/filereader/install
$(INSTALL_DIR) $(1)/usr/bin/
$(INSTALL_BIN) $(PKG_BUILD_DIR)/FileReader $(1)/usr/bin/
endef

$(eval $(call BuildPackage,filereader))

Post #2

forum2006

24 Jun 2007, 00:34

you are using the hosts g++ compiler. but you have to cross-compile. below is what works for me and creates a cross-compiled binary. check with the 'file' command if FileReader binary is cross-compiled for your target.

Index: packages/net/filereader/patches/100-Makefile.patch
===================================================================
--- packages/net/filereader/patches/100-Makefile.patch  (Revision 0)
+++ packages/net/filereader/patches/100-Makefile.patch  (Revision 0)
@@ -0,0 +1,15 @@
+Index: filereader-0.1/Makefile
+===================================================================
+--- filereader-0.1.orig/Makefile       2007-06-24 01:26:31.000000000 +0200
++++ filereader-0.1/Makefile    2007-06-24 01:26:50.000000000 +0200
+@@ -1,8 +1,8 @@
+ FileReader : FileReader.o
+-      g++ FileReader.o -o FileReader
++      $(CXX) FileReader.o -o FileReader
+ 
+ FileReader.o : FileReader.h FileReader.cpp
+-      g++ -c -Wall -Wno-deprecated FileReader.cpp
++      $(CXX) -c -Wall -Wno-deprecated FileReader.cpp
+ 
+ .PHONY : install 
+ install : 
Index: packages/net/filereader/Makefile
===================================================================
--- packages/net/filereader/Makefile    (Revision 0)
+++ packages/net/filereader/Makefile    (Revision 0)
@@ -0,0 +1,43 @@
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+# $Id$
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=filereader
+PKG_VERSION:=0.1
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://www.cs.uh.edu/~vivekian/downloads/
+PKG_MD5SUM:=376710ec6ba0f9fa27697a425a13b438
+PKG_CAT:=zcat
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/filereader
+  SECTION:=net
+  CATEGORY:=Network
+  TITLE:=FileReader is a test package
+  DESCRIPTION:=\
+       Sample Code \\\
+       Go For it \\\
+       It will save you time !
+  URL:=http://www.cs.uh.edu/~vivekian
+endef
+
+define Build/Compile
+       $(MAKE) -C $(PKG_BUILD_DIR) \
+               CFLAGS="$(TARGET_CFLAGS)" \
+               CXX="$(TARGET_CROSS)g++"
+endef
+
+define Package/filereader/install
+       $(INSTALL_DIR) $(1)/usr/bin/
+       $(INSTALL_BIN) $(PKG_BUILD_DIR)/FileReader $(1)/usr/bin/
+endef
+
+$(eval $(call BuildPackage,filereader))

(Last edited by forum2006 on 24 Jun 2007, 00:39)

Post #3

vivekian

25 Jun 2007, 12:59

This worked. In addition had to port libstdc++ to meet dependencies. I suppose the same can be done by specifying uclibc++ as the library to be used during cross linking.

Post #4

vivekian

25 Jun 2007, 13:11

@forum2006 : Forgot to say this !! Thanks a bunch for the quick response

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