To have access on files using FTP, HTTP and directly from file system I use the free library libcurl. Another important aspect is portability as the application should work on QNX using qcc/gcc 4.2.3 and on Windows using VC9/VS2008. So I give libcurl a try. The build process for libcURL is as stated in the documentation very straight forward. But there where two little pitfalls discovered when using VS2008.
Getting the archive from the download page is the same for both operating systems. The executable curl and the library libcurl are distributed in a single archive.
Building for QNX 6.3.2 using gcc 4.2.3
For QNX I decided to only use the required libraries for my project.
As root set the used default compiler for qcc:
# qcc -V4.2.3,gcc_ntox86 -set-default cc: default set to "4.2.3,gcc_ntox86"
$ cd /usr/src $ tar -xzf archive/curl-7.18.2.tar.gz $ cd curl-7.18.2 $ mkdir /usr/src/curl-install $ ./configure CC=qcc --prefix=/usr/src/curl-install --enable-http --enable-ftp --enable-file \ --disable-ares --disable-ldap --disable-ldaps --disable-dict --disable-telnet \ --disable-tftp --disable-sspi --disable-crypto-auth --without-ssl --without-zlib \ --without-libssh2 --without-gnutls --without-nss --without-libidn ... $ make ... $ make install ...
And everything showed up as expected in /usr/src/curl-install.
Building for Windows XP using VS2008
The documented build process is tailored for VC6 and VC8. But VS2008 aka VC9 is a little bit different. So I have had to solve two problems. But here are the steps to succeed.
unzip curl-7.18.2.zip or the tar.gz from above
start cmd.exe
curl-7.18.2> cd D:\_xi\curl\curl-7.18.2 curl-7.18.2> "C:\Programme\Microsoft Visual Studio 9.0\VC\bin\vcvars32.bat" curl-7.18.2> nmake vc
fails with:
NMAKE : fatal error U1065: invalid option '-'
Due to http://www-1.ibm.com/support/docview.wss? uid=swg21201892 this is caused by a set MAKEFLAGS.
curl-7.18.2> set MAKEFLAGS= curl-7.18.2> nmake vc8 Microsoft (R) Program Maintenance Utility Version 9.00.21022.08 Copyright (C) Microsoft Corporation. All rights reserved. generate VC8 makefiles curl-7.18.2\lib> cd lib curl-7.18.2\lib>nmake /f Makefile.vc8 CFG=release-dll Microsoft (R) Program Maintenance Utility Version 9.00.21022.08 Copyright (C) Microsoft Corporation. All rights reserved. cl.exe /O2 /DNDEBUG /MD /I. /I../include /nologo /W3 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL /Fo"release-dll\base64.obj" .\base64.c base64.c cl.exe /O2 /DNDEBUG /MD /I. /I../include /nologo /W3 /EHsc /DWIN32 /FD /c /DBUILDING_LIBCURL /Fo"release-dll\cookie.obj" .\cookie.c cookie.c ... LINK : fatal error LNK1181: cannot open input file 'bufferoverflowu.lib'
As stated in http://softwarecommunity.intel.com/isn/Community/en-US/forums/thread/30252971.aspx VS2008 does not need and there has no bufferoverflowu.lib.
Therefore I removed the bufferoverflowu.lib from the WINLIBS definition in lib\Makefile.vc8 and save it as src\Makefile.vc9. And everything works.
curl-7.18.2\lib>nmake /f Makefile.vc9 CFG=release-dll curl-7.18.2\lib>nmake /f Makefile.vc9 CFG=debug-dll curl-7.18.2\lib>nmake /f Makefile.vc9 CFG=release curl-7.18.2\lib>nmake /f Makefile.vc9 CFG=debug D:\_xi\curl\curl-7.18.2\lib>cd ..\src
Analog to the one above remove bufferoverflowu from src\Makefile.vc8 and save it as src\Makefile.vc9.
D:\_xi\curl\curl-7.18.2\src>nmake /f Makefile.vc9 CFG=release Microsoft (R) Program Maintenance Utility Version 9.00.21022.08 Copyright (C) Microsoft Corporation. All rights reserved. link.exe /incremental:no /libpath:"../lib" /nologo /out:curl.exe /subsystem:console \ /machine:X86 libcurl.lib wsock32.lib wldap32.lib hugehelpr.obj writeoutr.obj \ urlglobr.obj getpassr.obj homedirr.obj curlutilr.obj strtoofftr.obj mainr.obj curlr.res
The curl.exe does obiously need the runtime of VS2008. Therefore install the Microsoft Visual C++ 2008 Redistributable Package (x86), e.g. from MSDN there it is named as vcredist_x86.exe. Be sure to copy the curl.exe.manifest along with the binary.
