#1798 Snapshot 6596 giving configure error on cygwin


Hi All,

I am trying to build SDCC (snapshot - 6596) on cygwin. For this, I have downloaded the snapshot of src "sdcc-src-20110619-6596.tar.bz2".

Procedure followed for configuring & make:

Decompressed and extracted source using bzip2 and tar xvf commands respectively. Later, as per 2.4.4 sec in sdccman.pdf, I am using the script ’sdcc/support/scripts/sdcc_cygwin_mingw32’ for configuring and further build. I am running the script from the sdcc directory. However, I am encourntering an error => "configure: error: C compiler cannot create executables".

After observing the config.log, I suspect the error may be due to "-mno-cygwin" flag used with gcc compiler. gcc gives the following message:
"gcc: The -mno-cygwin flag has been removed; use a mingw-targeted cross-compiler".

I am herewith attaching the config.log for your reference & debugging.

Best Regards,
Raghunath Lolur.


  • BLRCalvin

    BLRCalvin - 2011-06-22

    config.log on cygwin

  • BLRCalvin

    BLRCalvin - 2011-07-07
    • status: open --> pending-works-for-me
  • BLRCalvin

    BLRCalvin - 2011-07-07

    Dear Developers,


    Finally, I successfully built SDCC (using snapshot #6613) on cygwin.

    The following are the issues encountered during the build and their corresponding solutions:

    • GCC v4 (pre-installed on my cygwin system) onwards does not accept “–mno-cygwin”flag used in SDCC build scripts. So, build fails. - GCC v3.4.4 used to compile which accepts this flag. Switch your default gcc to version 3.x by using

    • Multiple definition errors of “TYPEDEF” in linker source – commented the typedefs in “lkar.h” accordingly. Re-build.

    • Boost C++ libraries (used in the latest snapshot #6613) installation – Downloaded from the web (www.boost.org) and configured for CYGWIN. Build script updated with the GCC compiler flags for the installation path of the libraries. Re-build.

    • Linker error on multiple definitions of built-in functions like _log, _exp etc., (found in MINGW multiple libraries libm.a & libmsvcrt.a) – On googling the web, found that GCC compiler allows multiple definitions when a special linker flag is used; Updated the scripts with “—allow-multiple-definition” linker flag and re-build.

    SDCC builds successfully finally :-)

    I request the developers team to modify the ./configure script where necessary.

    Raghunath Lolur.

  • BLRCalvin

    BLRCalvin - 2011-07-07

    configure options script for building SDCC on cygwin

  • BLRCalvin

    BLRCalvin - 2011-07-07
    • status: pending-works-for-me --> open-works-for-me
  • BLRCalvin

    BLRCalvin - 2011-07-07

    Hello All,

    In my above comment, where I listed the issues/solutions, "sdcc_cygwin_mingw32" script under /sdcc/support/scripts was used and also updated with the following:

    For C++ Boost libraries, use CPPFLAGS="-I/usr/local/boost/boost_1_46_1" \

    For allowing multiple definitions, use LDFLAGS="-Wl,--allow-multiple-definition" \

    I am herewith attaching the sdcc_cygwin_mingw32 script with the above changes for your reference. This script has to be run from /sdcc folder.

    Sorry for the incomple info in the above comment.

    Raghunath Lolur.

  • Borut Ražem

    Borut Ražem - 2011-10-18
    • milestone: --> non_bugs
    • assigned_to: nobody --> borutr
    • status: open-works-for-me --> closed-works-for-me
  • Borut Ražem

    Borut Ražem - 2011-10-18

    Boost library can be installed directly from the CygWin package manager. In this case it is installed in standard directories, so no additional include director paths (-I ...) in CPPFLAGS are required.



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