INSTALL.devcpp
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- DevCpp-Mingw Install & Compilation Sept 2005
- ==================================
- Reference Emails available at curl@haxx.se:
- Libcurl Install and Use Issues
- Awaiting an Answer for Win 32 Install
- res = curl_easy_perform(curl); Error
- Makefile Issues
-
- Having previously done a thorough review of what was available that met my
- requirements under GPL, I settled for Libcurl as the software of choice for
- many reasons not the least of which was the support.
- Background
- ----------
- This quest started when I innocently tried to incorporate the libcurl library
- into my simple source code. I figured that a few easy steps would accomplish
- this without major headaches. I had no idea that I would be facing an almost
- insurmountable challenge.
- The main problem lies in two areas. First the bulk of support for libcurl
- exists for a Unix/linux command line environments. This is of little help when
- it comes to Windows O/S.
- Secondly the help that does exist for the Windows O/S focused around mingw
- thru a command line argument environment.
- You may ask "Why is this a problem?"
- I'm using a Windows O/S with DevCpp. For those of you who are unfamiliar with
- DevCpp, it is a window shell GUI that replaces the command line environment
- for gcc. A definite improvement that I am unwilling to give up. However using
- DevCpp presented its own set of issues. Inadvertently I also made some
- careless errors such as compiling the 7.14 version of Makefile with an older
- version of source code. Thanks to Dan Fandrich for picking this up.
- I did eventually with the help of Daniel, Phillipe and others manage to
- implement successfully (the only mingw available version)
- curl-7.13.0-win32-ssl-devel-mingw32 into the DevCpp environment. Only the
- dynamic libcurl.dll libcurldll.a libraries worked. The static library which I
- was interested in did not. Furthermore when I tried to implement one of the
- examples included with the curl package (get info.c) it caused the executable
- to crash. Tracing the bug I found it in the code and function res =
- curl_easy_perform(curl);.
- At this point I had to make a choice as to whether invest my limited
- time-energy resource to fixing the bug or to compile the new version
- available. After searching the archives I found a very similar or the same bug
- reported from version 7.12x on. Daniel did inform me that he thought that this
- bug had been fixed with the latest version. So I proceeded to compile the
- latest SSL version where I faced other challenges.
- In order to make this process unremarkable for others using the same
- environment I decided to document the process so that others will find it
- routine. It would be a shame if newbies could not implement this excellent
- package for their use.
- I would like to thank the many others in this forum and in the DevCpp forum
- for their help. Without your help I may either have given up or it would have
- taken me many times longer to achieve success.
- The Cookbook Approach
- ---------------------
- This discussion will be confined to a SSL static library compilation and
- installation. Limited mention and comments will be inserted where appropriate
- to help with non-SSL, dynamic libraries and executables.
- Using Makefile from DevCpp to compile Libcurl libraries
- Preamble
- --------
- Using the latest version release - curl-7.14.0.tar.gz. Curl source code is
- platform independent. This simply means that the source code can be compiled
- for any Operating System (Linux/Unix Windows etc. and variations of thereof).
- The first thing to note is that inside curl-7.14.0 you will find two folders
- lib and src. Both contain Makefile.m32 (required for win mingw library or exe
- compilation) files which are different. The main difference between these two
- folders and the makefiles is that the src folder contents are used to compile
- an executable file(curl.exe) while the lib folder contents are used to compile
- a static (libcurl.a) and dynamic (libcurl.dll & libcurldll.a) file that can be
- used to compile libcurl with your own source code so that one can use and
- access all libcurl functions.
- Before we start please make sure that DevCpp is installed properly. In
- particular make sure you have no spaces in the name of any of the directories
- and subdirectories where DevCpp is installed. Failure to comply with the
- install instructions may produce erratic behaviour in DevCpp. For further info
- check the following sites
- http://aditsu.freeunixhost.com/dev-cpp-faq.html
- http://sourceforge.net/forum/message.php?msg_id=3252213
- As I have mentioned before I will confine this to the SSL Library compilations
- but the process is very similar for compilation of the executable - curl.exe;
- just substitute the src folder makefile in its stead.
- First use a text processor Notepad, or your own favourite text processor. To
- engage your favourite text processor, select Makefile.m32 click once with your
- mouse on file icon; icon turns blue, press the shift key and right-click on
- mouse, menu appears select "Open with", select your favourite text processor.
- Next read the contents of Makefile.m32. It includes instructions on its use.
- Method I - DOS Command Line
- ---------------------------
-
- Note - The only reason I have included this method is that Method II which is
- the preferred method for compiling does not allow for the setting of option
- switches (e.g. SSL = 1 or SSL =0). At least that's what they tell me at the
- Dev-Cpp forum.
- 1 - Make a copy of (D:Dev-Cppbin) bin folder and name it "bin Original"
- place it in the Dev-Cpp installed directory (D:Dev-Cpp for this example)
- 2 - Copy the entire contents of the LIB folder of curl-7.14.0.tar.gz or zip
- version into the bin folder above (D:Dev-Cppbin). The reason being is that
- the make.exe file resides in this folder. Make.exe will use - Makefile.m32,
- Makefile.inc, and the source code included in the lib folder to compile the
- source code. There is a PATH issue with make.exe that remains unresolved at
- least for me. Unless the entire source code to be compiled is placed entirely
- within the directory of make.exe an error message will be generated - "file
- xxxx.yyy not available".
- 3- Go to Dev-Cppbin and double click on make .exe. You will see a DOS window
- quickly pop up and close very quickly. Not to worry! Please do not skip this
- step.
- 4- Click on the start buttonProgramsMS-DOS Prompt.Once the DOS Window is up
- Type the disk drive letter (e.g. E: ) engage the enter button. The path should
- automatically take you to the directory of the make.exe file.
- 5- To compile the source code simply type at the DOS prompt make -f
- Makefile.m32 as per instructions contained in the Makefile.m32 file (use any
- text processor to read instructions). I don't believe that this makefile
- allows for the option of non SSL. Ignore any warnings.
- 6- Collect and make copies of libcurl.a, libcurl.dll, libcurldll.a and any *.o
- compilations you might need in another directory outside of the bin directory
- as you will need this files shortly to set up libcurl for use with
- Dev-cpp. For most apps *.o is not required. Later on we will show what to do
- with these files.
- 7- You are finished but before closing we need to do cleanup - erase the bin
- folder and rename the "bin Original" folder created in step 1 to bin.
- Note to compile a curl executable the process is probably similar but instead
- of using the LIB folder contents use the SRC folder contents and Makefiles in
- curl-7.14.0.tar.gz. File directories relative placements must be respected for
- compiling to take place successfully. This may not be possible with the PATH
- problem that make.exe experiences. If anyone has solved this PATH issue and
- please make sure it actually works on Win 9x/2000/XP before letting me
- know. Then please let me or Daniel in on the solution so that it can be
- included with these instructions. Thanks.
- or
- Method II - Dev-Cpp GUI
- -----------------------
- 1- Copy the entire contents of the LIB folder of curl-7.14.0.tar.gz or zip
- version into any folder outside of (Dev-Cppbin).
- 2- Drop the File/New/click on Project.
- 3- New Project Dialogue box appears. Double click on the Static Library.
- 4- Create Project Dialogue box appears. Select the LIB folder location to
- place and locate your Project File Name. Placing the Project File Name
- elsewhere may cause problems (PATH issue problem again).
- 5- Drop down the Project/Project Options. Project Options Dialogue box
- appears.
- 6- Select the Makefile tab in the Project Options Dialogue Box. Check Box -
- Use Custom Makefile. Click on the Folder icon at the extreme right of the
- Check Box. Select Makefile.m32 in the folder wherever you have placed the
- contents of the LIB Folder. Press OK and close the Dialogue Box.
- 7- Drop the Menu Project/Click on Add to Project. Open File Dialogue Box
- appears. The Dialogue Box should open in the folder wherever you have placed
- the contents of the LIB Folder. If not go there.
- 8- Select Crtl-A to select all files in the LIB folder. Click on open to add
- files and close box. Wait till all files are added. This may take 30 seconds
- or longer.
- 9- Drop the Menu Execute/Click on Compile.
- 10- That's it.
- The following steps must be completed if Curl is to work properly
- =================================================================
- LIB folder inclusions (*.a placement)
- -------------------------------------
- 1- Refer to Method I - DOS Command Line point # 6 Take libcurl.a, libcurldll.a
- and install it in the directory C( or whichever drive Dev is installed)
- :Dev-Cpplib.
- Include Folder
- --------------
- 1- Create a new folder by the name of curl (do not change the name curl to
- some other name as it will cause major issues) in the directory
- C:Dev-Cppinclude.
- 2- Copy the entire contents of the curl folder of curl-7.14.0.tar.gz or zip
- version into the newly created curl directory - C:Dev-Cppincludecurl.
- Links To Include And Lib Folder
- -------------------------------
- 1- Drop the Menu - ToolsCompiler OptionsDirectoriesLibraries. Make sure
- that C( or whichever drive Dev is installed):DEV-CPPlib is included.
- 2- Next select the Menu - ToolsCompiler OptionsDirectoriesC Includes. Make
- sure that C:DEV-CPPinclude and C:Dev-Cppincludecurl are included.
- 3- Next select the Menu - ToolsCompiler OptionsDirectoriesC++
- Includes. Make sure that C:DEV-CPPinclude and C:Dev-Cppincludecurl are
- included.
- Linker Links
- ------------
- 1- Drop the Menu - ToolsCompiler OptionsDirectoriesCompiler.
- 2- Make sure that the box "Add these commands to the linker command line" is
- checked.
- 3- Include in the white space immediately below the box referred in 2 -lcurl
- -lws2_32.
- SSL Files
- ---------
- 1- Get the latest openSSL (as of time of this writing)
- openssl-0.9.7e-win32-bin.zip for the minimalist package of the openssl-0.9.7e
- binaries ported to MS Windows 95/98/NT/XP using the MingW32/GCC-3.1
- development environment. The file may be downloaded at
- http://curl.haxx.se/download/.
- 2- Open the above zip file. You will find two files - SDL.dll,
- SDL_mixer.dll. Install them in the directory C:WINDOWSSYSTEM32 for Win 9x
- users and c:winntsystem32 for NT-family users.
- Multithreading Files
- --------------------
- To be completed
- #define
- -------
- 1- Make sure that your program includes the following - #define CURL_STATICLIB
- must be declared FIRST before any other define functions may be
- added. Otherwise you may experience link errors.
- 2- Don't forget to include #include "curl/curl.h".
- e.g.
- #define CURL_STATICLIB
- #include <windows.h>
- #include "curl/curl.h"
- #include <fstream>
- #include <iostream>
- #include <vector>
- etc...
- Static or Dynamic Library
- -------------------------
- The above steps apply for the use by a static library. Should you choose to
- use a dynamic library you will be required to perform these additional steps.
- 1- Refer to Method I - DOS Command Line point # 6. Install libcurl.dll in the
- directory C:WINDOWSSYSTEM32 for Win 9x users and c:winntsystem32 for
- NT-family users.
- 2- Refer to Linker Links point 3 - Replace -lcurl with -lcurldll.
- Voila you're done.
- The non-SSL static Library build may not be possible to use at least as of the
- time of this writing - v7.14. Check reference emails - Phillipe and I found it
- impossible to fully compile as certain files were missing for linking. No big
- loss as SSL is a major plus.
- Hope this Helps
- Tom