How to compile FastCGI library

The simple answer, as usual is ./configure; make; make install
… Well not in this case: it will break in some environments (mine is x86_64-linux with gcc 4.4.5 and fcgi >= 2.4.0).

During the make command, you will likely fall into the following errors. Here is how to get rid of them:

  1. First error: a missing object file to be moved
    make  all-recursive
    make[1]: Entering directory `/homez.160/ultimact/jicmail1/fcgi-2.4.0'
    Making all in libfcgi
    make[2]: Entering directory `/homez.160/ultimact/jicmail1/fcgi-2.4.0/libfcgi'
    source='fcgiapp.c' object='libfcgi_la-fcgiapp.lo' libtool=yes \
            depfile='.deps/libfcgi_la-fcgiapp.Plo' tmpdepfile='.deps/libfcgi_la-fcgiapp.TPlo' \
            depmode=gcc3 /bin/sh ../depcomp \
            /bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I..   -I../include -pthread -g -O2 -Wall -c -o libfcgi_la-fcgiapp.lo `test -f fcgiapp.c || echo './'`fcgiapp.c
    rm -f .libs/libfcgi_la-fcgiapp.lo
    gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include -pthread -g -O2 -Wall -c fcgiapp.c -MT libfcgi_la-fcgiapp.lo -MD -MP -MF .deps/libfcgi_la-fcgiapp.TPlo  -fPIC -DPIC
    fcgiapp.c: In function 'ProcessManagementRecord':
    fcgiapp.c:1490: warning: dereferencing type-punned pointer will break strict-aliasing rules
    fcgiapp.c:1495: warning: dereferencing type-punned pointer will break strict-aliasing rules
    fcgiapp.c:1498: warning: dereferencing type-punned pointer will break strict-aliasing rules
    mv -f libfcgi_la-fcgiapp.o .libs/libfcgi_la-fcgiapp.lo
    mv: cannot stat `libfcgi_la-fcgiapp.o': No such file or directory
    make[2]: *** [libfcgi_la-fcgiapp.lo] Error 1
    make[2]: Leaving directory `/homez.160/ultimact/jicmail1/fcgi-2.4.0/libfcgi'
    make[1]: *** [all-recursive] Error 1
    make[1]: Leaving directory `/homez.160/ultimact/jicmail1/fcgi-2.4.0'
    make: *** [all] Error 2
    

    This may be due to a buggy version of libtool shipped with FastCGI.
    I don’t have a clean fix for this, but I have a very simple (yet dirty) work-around. Just have to add a make command at line 867 of the libtool file:

          # Just move the object if needed, then go on to compile the next one
          if test x"$output_obj" != x"$libobj"; then
            make $output_obj
            $show "$mv $output_obj $libobj"
            if $run $mv $output_obj $libobj; then :
            else
              error=$?
              $run $rm $removelist
              exit $error
            fi
          fi
    
  2. Second error: an undeclared symbol
    fcgio.cpp: In destructor 'virtual fcgi_streambuf::~fcgi_streambuf()':
    fcgio.cpp:50: error: 'EOF' was not declared in this scope
    fcgio.cpp: In member function 'virtual int fcgi_streambuf::overflow(int)':
    fcgio.cpp:70: error: 'EOF' was not declared in this scope
    fcgio.cpp:75: error: 'EOF' was not declared in this scope
    fcgio.cpp: In member function 'virtual int fcgi_streambuf::sync()':
    fcgio.cpp:86: error: 'EOF' was not declared in this scope
    fcgio.cpp:87: error: 'EOF' was not declared in this scope
    fcgio.cpp: In member function 'virtual int fcgi_streambuf::underflow()':
    fcgio.cpp:107: error: 'EOF' was not declared in this scope
    make[2]: *** [fcgio.lo] Error 1
    make[2]: Leaving directory `/somepath/fcgi-2.4.0/libfcgi'
    make[1]: *** [all-recursive] Error 1
    make[1]: Leaving directory `/somepath/fcgi-2.4.0'
    make: *** [all] Error 2
    

    This is due to a missing stdio.h include in the file libfcgi/fcgio.cpp. Just add it yourself.

    #ifdef _WIN32
    #define DLLAPI  __declspec(dllexport)
    #endif
    
    #include <stdio.h>
    #include <limits.h>
    #include "fcgio.h"
    
    using std::streambuf;
    using std::istream;
    using std::ostream;
    using std::streamsize;
    

These are the 2 errors that prevented me from compiling and linking FastCGI on my Linux system.

Hope it will avoid headaches to others.

About Muriel Salvan

I am a freelance project manager and polyglot developer, expert in Ruby and Rails. I created X-Aeon Solutions and rivierarb Ruby meetups. I also give trainings and conferences on technical topics. My core development principles: Plugins-oriented architectures, simple components, Open Source power, clever automation, constant technology watch, quality and optimized code. My experience includes big and small companies. I embrace agile methodologies and test driven development, without giving up on planning and risks containment methods as well. I love Open Source and became a big advocate.
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