Le forum de XCAS

Publié : **jeu. janv. 29, 2026 6:40 pm**

Hi all.

giac-2.0.0-19 is not compiling on Fedora (with GCC-16) because of following errors:

In file included from Print.cc:35:
Graph.h: In constructor 'xcas::QRGraph::QRGraph(int, int, int, const char*)':
Graph.h:44:9: warning: 'xcas::QRGraph::QRscale' will be initialized after [-Wreorder]
   44 |     int QRscale,size_border;
      |         ^~~~~~~
Graph.h:48:122: warning:   base 'Fl_Widget' [-Wreorder]
   48 |     QRGraph(int x,int y,int scale=3,const char * f="qrcode"):QRscale(scale),Fl_Widget(x,y,200*scale,200*scale),filename(f){};
      |                                                                                                                          ^
Graph.h:48:5: warning:   when initialized here [-Wreorder]
   48 |     QRGraph(int x,int y,int scale=3,const char * f="qrcode"):QRscale(scale),Fl_Widget(x,y,200*scale,200*scale),filename(f){};
      |     ^~~~~~~
Print.cc: In function 'void xcas::Graph2d3d_widget_print(Graph2d3d*, Fl_Paged_Device*, bool)':
Print.cc:534:34: error: invalid use of incomplete type 'class Fl_PostScript_Graphics_Driver'
  534 |         g3->printing=ps->driver()->file();
      |                                  ^~
In file included from Print.cc:64:
/usr/include/FL/Fl_PostScript.H:36:7: note: forward declaration of 'class Fl_PostScript_Graphics_Driver'
   36 | class Fl_PostScript_Graphics_Driver;
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print.cc: In function 'void xcas::widget_ps_print(Fl_Widget*, const std::string&, bool, int, bool, bool, bool)':
Print.cc:868:18: error: invalid use of incomplete type 'class Fl_PostScript_Graphics_Driver'
  868 |     ptr->driver()->pw_=eps?int(widget->w()*pixel_scale):0;
      |                  ^~
/usr/include/FL/Fl_PostScript.H:36:7: note: forward declaration of 'class Fl_PostScript_Graphics_Driver'
   36 | class Fl_PostScript_Graphics_Driver;
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print.cc:869:18: error: invalid use of incomplete type 'class Fl_PostScript_Graphics_Driver'
  869 |     ptr->driver()->ph_=eps?int(widget->h()*pixel_scale):0;
      |                  ^~
/usr/include/FL/Fl_PostScript.H:36:7: note: forward declaration of 'class Fl_PostScript_Graphics_Driver'
   36 | class Fl_PostScript_Graphics_Driver;
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print.cc:882:49: error: invalid use of incomplete type 'class Fl_PostScript_Graphics_Driver'
  882 |         setgraph3dprintstate(widget,ps->driver()->file(),hidemouseparam);
      |                                                 ^~
/usr/include/FL/Fl_PostScript.H:36:7: note: forward declaration of 'class Fl_PostScript_Graphics_Driver'
   36 | class Fl_PostScript_Graphics_Driver;
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print.cc:968:35: warning: 'int Fl_Input_::position(int, int)' is deprecated: since 1.4.0 - use insert_position(p, m) or Fl_Widget::position(x, y) instead [-Wdeprecated-declarations]
  968 |         Xcas_help_output->position(32+fnames,68+2*fnames);
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/FL/fl_types.h:24,
                 from /usr/include/FL/fl_utf8.h:31,
                 from /usr/include/FL/Fl.H:33,
                 from /usr/include/FL/Fl_Window.H:23,
                 from Print.h:12:
/usr/include/FL/Fl_Input_.H:316:3: note: declared here
  316 |   FL_DEPRECATED("since 1.4.0 - use insert_position(p, m) or Fl_Widget::position(x, y) instead",
      |   ^~~~~~~~~~~~~
Print.cc: In function 'void xcas::widget_print(Fl_Widget*)':
Print.cc:998:46: error: cannot 'dynamic_cast' 'p' (of type 'class Fl_Printer*') to type 'class Fl_PostScript_Graphics_Driver*' (target is not pointer or reference to complete type)
  998 |       if (Fl_PostScript_Graphics_Driver * ps=dynamic_cast<Fl_PostScript_Graphics_Driver * >(p))
      |                                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print.cc:999:39: error: invalid use of incomplete type 'class Fl_PostScript_Graphics_Driver'
  999 |         setgraph3dprintstate(widget,ps->file(),true);
      |                                       ^~
/usr/include/FL/Fl_PostScript.H:36:7: note: forward declaration of 'class Fl_PostScript_Graphics_Driver'
   36 | class Fl_PostScript_Graphics_Driver;
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:980: Print.lo] Error 1

You can see full build log here: https://kojipkgs.fedoraproject.org//wor ... /build.log

Publié : **jeu. janv. 29, 2026 7:59 pm**

Probably some incompatible change with FLTK. Which version of FLTK are you using ? Is it 1.4.x?
Is it possible to compile with FLTK 1.3.x, or disable the system fltk so that giac compiles against its own static version of FLTK 1.3 ?

Publié : **jeu. janv. 29, 2026 8:31 pm**

Probably some incompatible change with FLTK. Which version of FLTK are you using ? Is it 1.4.x?

Incompatible with FLTK-1.4.4, it is compiled against FLTK-1.3.11 instead.
Currently, this problem is limited into Fedora 44 (devel branch) repositories.

Publié : **ven. janv. 30, 2026 11:39 am**

I'll check later for changes for fltk 1.4, before that's done I propose as a workaround to modify configure.ac:

Code : Tout sélectionner

dnl Run autoreconf -iv to produce the configure script and associated files.

dnl Giac version number
m4_define([giac_major_version], [2])
m4_define([giac_minor_version], [0])
m4_define([giac_micro_version], [0])
m4_define([giac_version], [giac_major_version.giac_minor_version.giac_micro_version])

dnl Attempt to change archive name made by make dist 
dnl REVNUM=`date +%Y%m%d`
dnl AC_SUBST(REVNUM)


dnl Giac library ABI versioning information 
dnl (NOT to be confused with version number) 
m4_define([giac_lt_current], [0])
m4_define([giac_lt_age], [0])
m4_define([giac_lt_revision], [0])

AC_INIT([giac], giac_version)
AC_PREREQ(2.59)
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([config])
AC_CONFIG_SRCDIR([src/index.h])
dnl XXX: gettext hard-codes location of config.h. f@#$!
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE([gnu 1.8 dist-bzip2])

dnl AM_MAINTAINER_MODE

dnl AC_GNU_SOURCE
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_CXX
AC_PROG_CXXCPP
AC_LANG([C++])
AC_PROG_LIBTOOL
AC_PROG_YACC
AM_PROG_LEX
AC_C_BIGENDIAN

dnl Check for standard C+headers
GINAC_STD_CXX_HEADERS
AC_CHECK_HEADERS(regex)
AC_CHECK_FUNCS(tgammaf)

dnl avoid "security" checks for vectors is also included in first.h
dnl use -std=c++17 -march=native  for vectorclass v2 optimizations
dnl -DUSE_OBJET_BIDON added because xcas::localisation() does not load locales correctly for modules loaded before main() is executed
CXXFLAGS="$CXXFLAGS  -U_GLIBCXX_ASSERTIONS -DUSE_OBJET_BIDON"

dnl Define DOUBLEVAL if bigendian
if test "x$ac_cv_c_bigendian" = "xyes"; then
	CXXFLAGS="$CXXFLAGS -DDOUBLEVAL"
fi

dnl Check for GMP
CONFIG_GMPXX="yes"
CONFIG_TOMMATH="no"
AC_ARG_ENABLE([tommath],
	[AS_HELP_STRING([--enable-tommath], [Use libtommath instead of GMP [[default=no]]])],
	[ if test "x$enableval" = "xyes"; then CONFIG_TOMMATH="yes"; fi ], [])

CONFIG_LIBBF="no"
AC_ARG_ENABLE([libbf],
	[AS_HELP_STRING([--enable-libbf], [Use libbf instead of GMP [[default=no]]])],
	[ if test "x$enableval" = "xyes"; then CONFIG_LIBBF="yes"; fi ], [])

if test "$CONFIG_LIBBF" = "yes" ; then 
	AC_DEFINE([BF2GMP], [], [Replace GMP by libbf])
else 
if test "$CONFIG_TOMMATH" = "yes" ; then 
	AC_DEFINE([USE_GMP_REPLACEMENTS], [], [Replace GMP by tommath])
	AC_CHECK_HEADERS(tommath.h,AC_CHECK_LIB(tommath,mp_init))
else
  AC_CHECK_HEADERS(gmp.h,AC_CHECK_LIB(gmp,main))
  dnl Check for MPFR
  AC_CHECK_HEADERS(mpfr.h,AC_CHECK_LIB(mpfr,main))
  AC_CHECK_FUNCS(mpfr_set_str_raw)
  dnl Check for MPFI
  AC_CHECK_HEADERS(mpfi.h,AC_CHECK_LIB(mpfi,main))
  AC_CHECK_HEADERS(mps/mps.h,AC_CHECK_LIB(mps,main))
  AC_ARG_ENABLE([gmpxx],
	[AS_HELP_STRING([--enable-gmpxx], [Use GMP C+wrappers [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_GMPXX="no"; fi], [])
  if test "$CONFIG_GMPXX" = "yes"; then 
	AC_CHECK_HEADERS(gmpxx.h, [], [CONFIG_GMPXX="no"])
    fi
  if test "$CONFIG_GMPXX" = "yes"; then 
	save_LIBS="$LIBS"
	AC_CHECK_LIB(gmpxx, main, [], [CONFIG_GMPXX="no"])
	LIBS="$save_LIBS"
    fi
  GMPXX_LIBS=""
  if test "$CONFIG_GMPXX" = "yes"; then
	GMPXX_LIBS="-lgmpxx"
    fi
  AC_SUBST(CONFIG_GMPXX)
  AC_SUBST(GMPXX_LIBS)

  dnl AC_CHECK_LIB(ecm, main)
  CONFIG_ECM="yes"
  AC_ARG_ENABLE([ecm],
	[AS_HELP_STRING([--enable-ecm], [Use ECM [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_ECM="no"; fi], [])

  if test "$CONFIG_ECM" = "yes"; then
	AC_CHECK_HEADER(ecm.h, [], [CONFIG_ECM="no"])
    fi
  if test "$CONFIG_ECM" = "yes"; then
	AC_CHECK_LIB(ecm, main, [], [CONFIG_ECM="no"])
    fi
  AC_SUBST(CONFIG_ECM)
  AC_SUBST(ECM_LIBS)

  dnl AC_CHECK_LIB(bernmm, main)
  CONFIG_BERNMM="yes"
  AC_ARG_ENABLE([bernmm],
	[AS_HELP_STRING([--enable-bernmm], [Use BERNMM [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_BERNMM="no"; fi], [])

  if test "$CONFIG_BERNMM" = "yes"; then
	AC_CHECK_HEADER(bern_rat.h, [], [CONFIG_BERNMM="no"])
    fi
  if test "$CONFIG_BERNMM" = "yes"; then
	AC_CHECK_LIB(bernmm, main, [], [CONFIG_BERNMM="no"])
    fi
  AC_SUBST(CONFIG_BERNMM)
  AC_SUBST(BERNMM_LIBS)  

  dnl Checking for NTL
  CONFIG_NTL="yes"
  AC_ARG_ENABLE([ntl],
	[AS_HELP_STRING([--enable-ntl], [Use NTL [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_NTL="no"; fi], [])

  if test "$CONFIG_NTL" = "yes"; then
	AC_CHECK_HEADER(NTL/ZZ.h, [], [CONFIG_NTL="no"])
    fi
  if test "$CONFIG_NTL" = "yes"; then
	save_LIBS="$LIBS"
	AC_CHECK_LIB(ntl, main, [], [CONFIG_NTL="no"])
	LIBS="$save_LIBS"
    fi
  NTL_LIBS=""
  if test "$CONFIG_NTL" = "yes"; then
	NTL_LIBS="-lntl"
    fi
  AC_SUBST(CONFIG_NTL)
  AC_SUBST(NTL_LIBS)

  CONFIG_PARI="yes"
  AC_ARG_ENABLE([pari],
	[AS_HELP_STRING([--enable-pari], [Use PARI [[default=yes]]])],
	[ if test "$enableval" = "no"; then CONFIG_PARI="no"; fi], [])
  
  if test "$CONFIG_PARI" = "yes"; then
	AC_CHECK_HEADERS(pari/pari.h, [], [CONFIG_PARI="no"])
    fi
  if test "$CONFIG_PARI" = "yes"; then
	save_LIBS="$LIBS"
	AC_CHECK_LIB(pari, main, [], [CONFIG_PARI="no"])
	LIBS="$save_LIBS"
    fi

fi
fi
AM_CONDITIONAL(CONFIG_NTL, [test "$CONFIG_NTL" = "yes"])
AM_CONDITIONAL(CONFIG_ECM, [test "$CONFIG_ECM" = "yes"])
AM_CONDITIONAL(CONFIG_BERNMM, [test "$CONFIG_BERNMM" = "yes"])
AM_CONDITIONAL(CONFIG_GMPXX, [test "$CONFIG_GMPXX" = "yes"])
  
dnl Optimization or debug
CONFIG_DEBUG_P="yes"
AC_ARG_ENABLE([debug],
	[AS_HELP_STRING([--enable-debug], [enables debug support [[default=no]] ])],
	[ if test "x$enableval" = "xno"; then CONFIG_DEBUG_P="no"; fi ], [])

if test "$CONFIG_DEBUG_P" = "yes"; then
	AC_DEFINE(DEBUG_SUPPORT, ,[Set if debugging is enabled])
  fi
  
  dnl Garbage collector
CONFIG_GC="no"
AC_ARG_ENABLE([gc],
	[AS_HELP_STRING([--enable-gc], [Use Boehm garbage collector [[default=no]]])],
	[ if test "$enableval" = "yes"; then CONFIG_GC="yes"; fi ], [])

if test "$CONFIG_GC" = "xyes" ; then 
	AC_CHECK_LIB(gc,GC_malloc_atomic)
  fi
  
CONFIG_SSCL="no"
  dnl Include semi-classical
AC_ARG_ENABLE([sscl], [
	AS_HELP_STRING([--enable-sscl],
		[enable semi-classical algorithms (not working yet) [[default=no]]])],
	[ if "x$enableval" = "xyes"; then CONFIG_SSCL="yes"; fi ], [])
  
if test "x$CONFIG_SSCL" = "xyes"; then 
	AC_DEFINE(HAVE_SSCL, ,[Set to enable semi-classical routines])
fi
  
AC_CHECK_LIB(m, main)

CONFIG_PNG="yes"
AC_ARG_ENABLE(png,
	[AS_HELP_STRING([--enable-png], [Enable PNG library])],
	[ if test "x$enableval" = "xno"; then CONFIG_PNG="no"; fi], [])
  
if test "x$CONFIG_PNG" = "xyes"; then 
   AC_CHECK_HEADERS(png.h, AC_SEARCH_LIBS(png_sig_cmp,[png16 png14 png12 png]))
   dnl AC_CHECK_HEADERS(png.h, AC_CHECK_LIB(png,main)) dnl AC_CHECK_LIBS(main,[png16,png14,png12,png]))
fi

  
dnl Checking for dl
  
CONFIG_DL="yes"
AC_ARG_ENABLE(dl,
	[AS_HELP_STRING([--enable-dl], [Enable dynamically loaded modules])],
	[ if test "x$enableval" = "xno"; then CONFIG_DL="no"; fi], [])
  
if test "x$CONFIG_DL" = "xyes"; then 
	AC_CHECK_LIB(dl, dlopen)
  fi
  
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
  
dnl Checking for Gnu Sci Lib
CONFIG_GSL="yes"
AC_ARG_ENABLE([gsl],[
	AS_HELP_STRING([--enable-gsl], [Use GNU scientific library [[default=yes]]])],
	[ if test "x$enableval" = "xno"; then CONFIG_GSL="no"; fi], [])

if test "$CONFIG_GSL" = "yes"; then
	AC_CHECK_HEADERS(gsl/gsl_blas.h)
	AC_CHECK_HEADERS(gsl/gsl_eigen.h)
	if test "$ac_cv_header_gsl_gsl_blas_h" != "yes" -o "$ac_cv_header_gsl_gsl_eigen_h" != "yes"; then
		CONFIG_GSL="no"
	fi
fi
if test "$CONFIG_GSL" = "yes"; then
	save_LIBS="$LIBS"
	AC_CHECK_LIB(gslcblas, main, [], [CONFIG_GSL="no"])
	AC_CHECK_LIB(gsl, gsl_sf_gamma, [], [CONFIG_GSL="no"])
	LIBS="$save_LIBS"
  fi
GSL_LIBS=""
if test "$CONFIG_GSL" = "yes"; then
	GSL_LIBS="-lgsl -lgslcblas"
  fi
AC_SUBST(CONFIG_GSL)
AC_SUBST(GSL_LIBS)
AM_CONDITIONAL(CONFIG_GSL, [test "$CONFIG_GSL" = "yes"])
  
CONFIG_LAPACK="yes"
AC_ARG_ENABLE([lapack],
	[AS_HELP_STRING([--enable-lapack], [Use LAPACK [[default=yes]]])],
	[ if test "$enableval" = "no"; then CONFIG_LAPACK="no"; fi], [])
  
if test "$CONFIG_LAPACK" = "yes"; then
#	AC_CHECK_LIB(f2c, main, [], [CONFIG_LAPACK="no"])
#	AC_CHECK_LIB(blas, main, [], [CONFIG_LAPACK="no"])
#	AC_CHECK_LIB(tmglib, main, [], [CONFIG_LAPACK="no"])
	AC_CHECK_LIB(gfortran, main)
	AC_CHECK_LIB(blas, main)
	AC_CHECK_LIB(lapack, main, [], [CONFIG_LAPACK="no"])
#        AX_BLAS([have_blas=yes],[have_blas=no])
#        AX_LAPACK([have_lapack=yes],[have_lapack=no])
fi
  
dnl if test "$CONFIG_PARI" = "yes"; then
dnl                      AC_MSG_CHECKING([whether PARI is configured with pthreads])
dnl                      AC_RUN_IFELSE([AC_LANG_PROGRAM([
dnl                          [#include <pari/pari.h>
dnl                           #include <string.h>]],
dnl                         [[return strcmp(PARI_MT_ENGINE, "pthread") != 0]])],
dnl                        [AC_MSG_RESULT([yes. Good])],
dnl                        [AC_MSG_RESULT([no. Not good])
dnl                         CONFIG_PARI="no"])
dnl  fi

PARI_LIBS=""
if test "$CONFIG_PARI" = "yes"; then
	PARI_LIBS="-lpari"
fi
AC_SUBST(PARI_LIBS)
AC_SUBST(CONFIG_PARI)
AM_CONDITIONAL(CONFIG_PARI, [test "$CONFIG_PARI" = "yes"])
  


CONFIG_COCOA="yes"
AC_ARG_ENABLE([cocoa],
	[AS_HELP_STRING([--enable-cocoa], [Use CoCoA library [[default=autodetect]]])],
	[if test "$enableval" = "no"; then CONFIG_COCOA="no"; fi], [])

if test "$CONFIG_COCOA" = "yes"; then
	AC_CHECK_HEADER(CoCoA/io.H, [], [CONFIG_COCOA="no"])
  fi
if test "$CONFIG_COCOA" = "yes"; then
	save_LIBS="$LIBS"
	AC_CHECK_LIB(cocoa, main, [], [CONFIG_COCOA="no"])
	LIBS="$save_LIBS"
fi
COCOA_LIBS=""
if test "$CONFIG_COCOA" = "yes"; then
	COCOA_LIBS="-lcocoa"
fi
AC_SUBST(CONFIG_COCOA)
AC_SUBST(COCOA_LIBS)
AM_CONDITIONAL(CONFIG_COCOA, [test "$CONFIG_COCOA" = "yes"])

dnl AC_CHECK_LIB(ao, main)
CONFIG_AO="yes"
AC_ARG_ENABLE([ao],
	[AS_HELP_STRING([--enable-ao], [Use AO [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_AO="no"; fi], [])

if test "$CONFIG_AO" = "yes"; then
	AC_CHECK_HEADER(ao/ao.h, [], [CONFIG_AO="no"])
  fi
if test "$CONFIG_AO" = "yes"; then
	AC_CHECK_LIB(ao, main, [], [CONFIG_AO="no"])
  fi
AC_SUBST(CONFIG_AO)
AC_SUBST(AO_LIBS)
AM_CONDITIONAL(CONFIG_AO, [test "$CONFIG_AO" = "yes"])

dnl AC_CHECK_LIB(glpk, main)
CONFIG_GLPK="yes"
AC_ARG_ENABLE([glpk],
	[AS_HELP_STRING([--enable-glpk], [Use GLPK [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_GLPK="no"; fi], [])

if test "$CONFIG_GLPK" = "yes"; then
	AC_CHECK_HEADER(glpk.h, [], [CONFIG_GLPK="no"])
  fi
if test "$CONFIG_GLPK" = "yes"; then
	AC_CHECK_LIB(glpk, main, [], [CONFIG_GLPK="no"])
  fi
AC_SUBST(CONFIG_GLPK)
AC_SUBST(GLPK_LIBS)
AM_CONDITIONAL(CONFIG_GLPK, [test "$CONFIG_GLPK" = "yes"])

dnl AC_CHECK_LIB(samplerate, main)
CONFIG_SAMPLERATE="yes"
AC_ARG_ENABLE([samplerate],
	[AS_HELP_STRING([--enable-samplerate], [Use SAMPLERATE [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_SAMPLERATE="no"; fi], [])

if test "$CONFIG_SAMPLERATE" = "yes"; then
	AC_CHECK_HEADER(samplerate.h, [], [CONFIG_SAMPLERATE="no"])
  fi
if test "$CONFIG_SAMPLERATE" = "yes"; then
	AC_CHECK_LIB(samplerate, main, [], [CONFIG_SAMPLERATE="no"])
  fi
AC_SUBST(CONFIG_SAMPLERATE)
AC_SUBST(SAMPLERATE_LIBS)
AM_CONDITIONAL(CONFIG_SAMPLERATE, [test "$CONFIG_SAMPLERATE" = "yes"])

dnl AC_CHECK_LIB(curl, main)
CONFIG_CURL="yes"
AC_ARG_ENABLE([curl],
	[AS_HELP_STRING([--enable-curl], [Use CURL [[default=yes]]])],
	[if test "$enableval" = "no"; then CONFIG_CURL="no"; fi], [])

if test "$CONFIG_CURL" = "yes"; then
	AC_CHECK_HEADER(curl/curl.h, [], [CONFIG_CURL="no"])
  fi
if test "$CONFIG_CURL" = "yes"; then
	AC_CHECK_LIB(curl, main, [], [CONFIG_CURL="no"])
  fi
AC_SUBST(CONFIG_CURL)
AC_SUBST(CURL_LIBS)
AM_CONDITIONAL(CONFIG_CURL, [test "$CONFIG_CURL" = "yes"])

  
AC_CANONICAL_HOST
dnl Check for stuff needed for building the Giac interactive shell (cas).
GINAC_READLINE

dnl Ugh...
CONFIG_GUI="yes"
AC_ARG_ENABLE([gui],
	[AS_HELP_STRING([--enable-gui], [The disable-gui option has no more effect because FLTK 1.3.8 is now included in Giac/Xcas. If FLTK compilation fails or if your local FLTK install is incompatible, you should configure with --disable-fltk])],
	[ if test "x$enableval" = "xno"; then CONFIG_GUI="no"; fi], [])

CONFIG_FLTK="yes"
AC_ARG_ENABLE([fltk],
	[AS_HELP_STRING([--enable-fltk], [enable FLTK [[default=yes]]])],
	[ if test "x$enableval" = "xno"; then CONFIG_FLTK="no"; fi], [])
	
save_LIBS="$LIBS"
if test "$CONFIG_FLTK" = "yes"; then 

dnl Check for X11 anf fltk or cygwin and fltk...
	case $host_os in
		*cygwin*)
		AC_CHECK_LIB(GL, main)
dnl		AC_CHECK_LIB(GLU, main)
dnl		AC_CHECK_LIB(fltk_png, main)
		AC_CHECK_LIB(fltk_gl, main)
		AC_CHECK_LIB(fltk, main)
		AC_CHECK_LIB(z, main)
		AC_CHECK_LIB(jpeg, main)
		AC_CHECK_LIB(fltk_jpeg, main)
		AC_CHECK_LIB(fltk_images, main)
		if test "$HAVE_LIBFLTK" = "1" ; then
			AC_DEFINE([HAVE_LIBFLVW],1,[Now defined if fltk is available])
		fi
		LIBS="$LIBS -mwindows -lole32 -luuid -lcomctl32 -lwsock32"
		if test "$HAVE_LIBFLTK_GL" = "1" ; then
		    AC_DEFINE([USE_OPENGL32],1,[Defined if fltk has OpenGL enabled])
		    LIBS="$LIBS -lglu32 -lopengl32 -lfltk_png"
		fi

		CXXFLAGS="$CXXFLAGS -DWIN32"
		AC_CHECK_LIB(intl.dll, main)
		AC_CHECK_LIB(intl, main)
		;;

		*mingw*)
		CXXFLAGS="$CXXFLAGS -D__MINGW_H"
		CFLAGS="$CFLAGS -D__MINGW_H"
		LIBS="$LIBS -lopengl32"
		AC_CHECK_LIB(fltk_gl, main)
		AC_CHECK_LIB(fltk, main)
		if test "$HAVE_LIBFLTK_GL" = "1" ; then
		    AC_DEFINE([USE_OPENGL32],1,[Defined if fltk has OpenGL enabled])
		fi		
		AC_CHECK_LIB(z, main)
		AC_CHECK_LIB(jpeg, main)
		AC_CHECK_LIB(fltk_images, main)
		;;

		*darwin*)
		dnl FLTK does not need X libraries on this platform
		;;
		*)
		AC_PATH_XTRA
		AC_CHECK_LIB(GL, main)
dnl		AC_CHECK_LIB(GLU, main)
		;;
	esac
        dnl FLTK: check system, if fltk not present or if LIBFLTK=GIAC use provided fltk 1.3.8
        AC_CHECK_HEADERS([FL/Fl.H])
        AS_IF([test "x$LIBFLTK" = "xGIAC" || test "x$ac_cv_header_FL_Fl_H" != "xyes"], [
        AC_MSG_NOTICE([Forcing local static FLTK compilation...])
    
        # Votre logique de décompression et compilation
        tar xfj fltk-1.3.8-source.tar.bz2
        (cd fltk-1.3.8 && export CXXFLAGS="$CXXFLAGS -fPIC" && ./configure --disable-shared && make)
    
        # Mise à jour des flags pour le reste du configure
        FLTK_DIR="`pwd`/fltk-1.3.8"
        FLTK_LIB_DIR="$FLTK_DIR/lib"
    
        # 1. On commence par la bibliothèque de base (obligatoire)
        AS_IF([test -f "$FLTK_LIB_DIR/libfltk.a"], [
                FLTK_LIBS_STATIC="$FLTK_LIB_DIR/libfltk.a"
                AC_DEFINE([HAVE_LIBFLTK], [1], [Define to 1 if you have the fltk library])
               ], [
                  AC_MSG_ERROR([Core FLTK static library not found in $FLTK_LIB_DIR])
               ])

        AS_IF([test -f "$FLTK_LIB_DIR/libfltk_gl.a"], [
                FLTK_LIBS_STATIC="$FLTK_LIB_DIR/libfltk_gl.a $FLTK_LIBS_STATIC -lGL -lpng -ljpeg -lz"
                AC_DEFINE([HAVE_LIBFLTK_GL], [1], [Define to 1 if you have the fltk_gl library])
               ])

       # 2. On boucle sur les libs optionnelles
       # Note : On les AJOUTE DEVANT (prepend) pour respecter l'ordre de dépendance
       for suffix in forms images; do
        libname="libfltk_$suffix.a"
        AS_IF([test -f "$FLTK_LIB_DIR/$libname"], [
            # On définit la constante en majuscules (ex: HAVE_LIBFLTK_GL)
            # tr est utilisé pour transformer le suffixe en majuscules
            upper_suffix=`echo $suffix | tr '[[a-z]]' '[[A-Z]]'`
            AC_DEFINE_UNQUOTED([HAVE_LIBFLTK_$upper_suffix], [1], [FLTK $suffix static])
            
            # On ajoute la lib au début de notre liste
            FLTK_LIBS_STATIC="$FLTK_LIB_DIR/$libname $FLTK_LIBS_STATIC"
        ])
       done
    
        # 3. Récupération des dépendances système via le fltk-config local
        # On filtre -lfltk car on utilise nos chemins en dur vers les .a
        FLTK_SYS_LIBS=`$FLTK_DIR/fltk-config --ldstaticflags | sed 's/-lfltk[[^ ]]*//g'`


        # On injecte au début des variables globales
        CXXFLAGS="$FLTK_INCLUDES $CXXFLAGS"
        FLTK_LIBS="$FLTK_LIBS_STATIC $FLTK_SYS_LIBS"
        LIBS="$FLTK_LIBS $LIBS"
        ], [
        AC_MSG_RESULT([Using system FLTK headers.])
        dnl X11, check for opengl, fltk
	AC_CHECK_LIB(X11,main)
	AC_CHECK_LIB(Xcursor,main)
	AC_CHECK_LIB(Xfixes,main)
	AC_CHECK_LIB(Xinerama, main)
	AC_CHECK_LIB(fontconfig, main)
	AC_CHECK_LIB(Xft, main,[HAVE_LIBXFT=1]) dnl  ,[], [AC_MSG_ERROR(exiting, as libXft cannot be found. Hint: you can run ./configure --disable-fltk to compile without GUI)])
        if test "$HAVE_LIBXFT" = "1" ; then
           AC_CHECK_LIB(Xft, main)
	   AC_CHECK_LIB(Xext, main)
	   AC_CHECK_LIB(Xrender, main)
	   AC_CHECK_LIB(fltk_gl, main)
	   AC_CHECK_LIB(fltk, main)
	   if test "$HAVE_LIBFLTK" = "1"; then
	      AC_DEFINE([HAVE_LIBFLVW],1, [Now defined if fltk is available])
	      fi
	      AC_CHECK_LIB(z,main)
	      AC_CHECK_HEADERS(png.h, AC_CHECK_LIB(png,main))
	      AC_CHECK_LIB(jpeg, main)
	      AC_CHECK_LIB(fltk_images, main)
	      FLTK_LIBS="$LIBS $X_LIBS"
	      AC_SUBST(FLTK_LIBS)
              cd src && ln -sf ../fltk-1.3.8 && cd ..
           fi
        fi
            ])
LIBS="$save_LIBS"

AC_CHECK_HEADERS(dfu_lib.h) 
AC_CHECK_LIB(usb-1.0,main) 
AC_CHECK_LIB(dfu,dfu_main) 
AC_CHECK_LIB(cliquer,main) 
AC_CHECK_LIB(nauty,main)
AC_CHECK_HEADERS(nauty/naututil.h)
dnl https://github.com/vectorclass by Agner Fog, make sure to export -std=c++17 in CXXFLAGS
AC_CHECK_HEADERS(vcl2/vectorclass.h,CONFIG_VECTORCLASS="yes",CONFIG_VECTORCLASS="no")
  
AC_CHECK_LIB(pthread,main)
AC_CHECK_HEADERS(pthread.h)
AC_CHECK_HEADERS(malloc.h,AC_CHECK_FUNCS(mallinfo))
AC_CHECK_FUNCS(sysconf)
AC_CHECK_LIB(rt,clock_gettime)
  
  dnl Checking for hash_map
AC_CHECK_HEADER(unordered_map, AC_DEFINE(C11_UNORDERED_MAP,1, [Define if <unordered_map> header is available]))
AC_CHECK_HEADER(ext/hash_map, AC_DEFINE(EXT_HASH_MAP,1, [Define if <ext/hash_map> header is available]))
AC_CHECK_HEADER(tr1/unordered_map, AC_DEFINE(UNORDERED_MAP,1, [Define if <tr1/unordered_map> header is available]))
AC_CHECK_HEADER(hash_map,AC_DEFINE(HASH_MAP,1, [Define if <hash_map> header is aviailable]))
AC_CHECK_HEADERS(pwd.h, ,AC_DEFINE(HAVE_NO_PWD_H,1, [Set if pwd.h is NOT available]))
AC_CHECK_HEADERS(locale.h)
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(sys/times.h, , AC_DEFINE(HAVE_NO_SYS_TIMES_H,1, [Set if <sys/times.h> is NOT available]))
AC_CHECK_HEADERS(sys/resource.h, , AC_DEFINE(HAVE_NO_SYS_RESOURCE_WAIT_H,1, [Set if <sys/resource.h> is NOT available]))
AC_CHECK_HEADERS(sys/types.h)
AC_CHECK_HEADERS(signal.h)
AC_CHECK_FUNCS(getpid, , AC_DEFINE(HAVE_NO_SIGNAL_H,1, [Set if getpid() function is NOT available]))
AC_CHECK_FUNCS(getcwd, , AC_DEFINE(HAVE_NO_CWD,1, [Set if getcwd() function is NOT available]))
AC_CHECK_FUNCS(getpwuid, , AC_DEFINE(HAVE_NO_HOME_DIRECTORY,1, [Set if getpwuid() function is NOT available]))
AC_CHECK_FUNCS(system, , AC_DEFINE(HAVE_NO_SYSTEM, 1, [Set if system() function is NOT available]))
  
ALL_LINGUAS="es fr el pt it en zh de"
CONFIG_GETTEXT="yes"
AC_ARG_ENABLE([gettext],
	[AS_HELP_STRING([--enable-gettext], [enable GETTEXT [[default=yes]]])],
	[ if test "x$enableval" = "xno"; then CONFIG_GETTEXT="no"; fi], [])

if test "$CONFIG_GETTEXT" = "yes"; then 
   AC_CHECK_LIB(intl, main) 
   AM_GNU_GETTEXT
   AM_GNU_GETTEXT_VERSION([0.14.5])
   fi
dnl for Slowlaris comment next line
dnl auto-check will work if the function checked is alone in a file
dnl and independant from the whole micropython library
dnl otherwise it will fail because it depends on giac
dnl AC_CHECK_LIB(micropython,mp_version)

AC_PROG_EGREP
CONFIG_DOC_PROGS="yes"
AC_PATH_PROG(LATEX, latex, "")
if test -z "$LATEX"; then CONFIG_DOC_PROGS="no"; fi

if test "$CONFIG_DOC_PROGS" = "yes"; then
	AC_PATH_PROG(MAKEINDEX, makeindex, "")
	if test -z "$MAKEINDEX"; then CONFIG_DOC_PROGS="no"; fi
fi

if test "$CONFIG_DOC_PROGS" = "yes"; then
	AC_PATH_PROG(PDFLATEX, pdflatex, "")
	if test -z "$PDFLATEX"; then CONFIG_DOC_PROGS="no"; fi
fi
if test "$CONFIG_DOC_PROGS" = "yes"; then
	AC_PATH_PROG(DVIPS, dvips, "")
	if test -z "$DVIPS"; then CONFIG_DOC_PROGS="no"; fi
fi
dnl if test "$CONFIG_DOC_PROGS" = "yes"; then
dnl 	AC_PATH_PROG(LATEX2HTML, latex2html, "")
dnl	if test -z "$LATEX2HTML"; then CONFIG_DOC_PROGS="no"; fi
dnl fi
AC_SUBST(CONFIG_DOC_PROGS)
AM_CONDITIONAL(DOC_PROGS, [test "$CONFIG_DOC_PROGS" = "yes"])

dnl Checking for sstream for mathml
AC_CHECK_HEADERS(sstream, AC_DEFINE(HAVE_SSTREAM,1), )

dnl CXXFLAGS="$CXXFLAGS -fno-strict-aliasing -DSMARTPTR64"
CXXFLAGS="$CXXFLAGS -fno-strict-aliasing -DGIAC_GENERIC_CONSTANTS -DTIMEOUT"

dnl enables MicroPython, -fpermissive to avoid failure on Debian 10
CONFIG_MICROPY="yes"
AC_ARG_ENABLE([micropy],
	[AS_HELP_STRING([--enable-micropy], [enable MICROPY [[default=yes]]])],
	[ if test "x$enableval" = "xno"; then CONFIG_MICROPY="no"; fi], [])
	
if test "$CONFIG_MICROPY" = "yes"; then 
  LDFLAGS="$LDFLAGS -L. -L.. -lmicropython"
  CXXFLAGS="$CXXFLAGS -DHAVE_LIBMICROPYTHON -fpermissive"
fi
AM_CONDITIONAL([BUILD_MICROPY], [test "$CONFIG_MICROPY" = "yes"])

dnl enables QuickJS, 
CONFIG_QUICKJS="yes"
AC_ARG_ENABLE([quickjs],
	[AS_HELP_STRING([--enable-quickjs], [enable QUICKJS [[default=yes]]])],
	[ if test "x$enableval" = "xno"; then CONFIG_QUICKJS="no"; fi], [])
	
if test "$CONFIG_QUICKJS" = "yes"; then 
  CXXFLAGS="$CXXFLAGS -DQUICKJS"
  LDFLAGS="$LDFLAGS"
  CFLAGS="$CFLAGS -D_GNU_SOURCE -DQUICKJS -DCONFIG_BIGNUM -DCONFIG_VERSION=\\\"2020-11-08\\\""
fi
AM_CONDITIONAL([BUILD_QUICKJS], [test "$CONFIG_QUICKJS" = "yes"])

dnl Output makefiles etc.
AC_OUTPUT([
Makefile
src/Makefile
check/Makefile
doc/Makefile
doc/en/Makefile
doc/es/Makefile
doc/fr/Makefile
doc/el/Makefile
doc/el/tutoriel/Makefile
doc/el/casinter/Makefile
doc/local/Makefile
doc/pt/Makefile
doc/zh/Makefile
doc/de/Makefile
intl/Makefile
po/Makefile.in
examples/Makefile
debianold/Makefile
debian/Makefile
micropython-1.12/Makefile
micropython-1.12/docs/Makefile
micropython-1.12/drivers/Makefile
micropython-1.12/examples/Makefile
micropython-1.12/extmod/Makefile
micropython-1.12/lib/Makefile
micropython-1.12/logo/Makefile
micropython-1.12/ports/Makefile
micropython-1.12/py/Makefile
micropython-1.12/tests/Makefile
micropython-1.12/tools/Makefile
micropython-1.12/unix/Makefile
micropython-1.12/ulab/Makefile
micropython-1.12/ulab/numpy/Makefile
micropython-1.12/ulab/numpy/fft/Makefile
micropython-1.12/ulab/numpy/ndarray/Makefile
micropython-1.12/ulab/numpy/linalg/Makefile
micropython-1.12/ulab/scipy/Makefile
micropython-1.12/ulab/scipy/linalg/Makefile
micropython-1.12/ulab/scipy/optimize/Makefile
micropython-1.12/ulab/scipy/signal/Makefile
micropython-1.12/ulab/scipy/special/Makefile
micropython-1.12/ulab/user/Makefile
micropython-1.12/ulab/utils/Makefile
])

echo "Adding link . to giac in src"
rm -f src/giac && ln -s . src/giac
rm -f src/config.h && cp config.h src
rm -f path.h
echo "#define giac_html_location \"$prefix/share/giac/doc/\"" >> path.h
echo "#define giac_aide_location \"$prefix/share/giac/aide_cas\"" >> path.h
echo "#ifdef __APPLE__" >> path.h
echo "#define giac_locale_location \"/Applications/usr/share/locale/\"" >> path.h
echo "#else" >> path.h
echo "#define giac_locale_location \"$prefix/share/locale/\"" >> path.h
echo "#endif" >> path.h
echo "#define giac_gnuplot_location \"$GNUPLOT\"" >> path.h
rm -f src/path.h && cp path.h src
if test "$CONFIG_VECTORCLASS" = "yes" ; then
	echo "SIMD instruction support enabled. Check that CXXFLAGS contains -std=c++17"
else
	echo "If you want SIMD instruction support, please install https://github.com/vectorclass version 2, export CXXFLAGS='-std=c++17 -march=native -O2' and run ./configure again."
fi

Then run autoreconf to update the configuration shellscript, and before running configure, run
export LIBFLTK=GIAC
This should ignore the system FLTK libraries, force static compilation of the fltk 1.3.8 archive present in giac source and force linking with the compiled static libraries.

Le forum de XCAS

error: invalid use of incomplete type

error: invalid use of incomplete type

Re: error: invalid use of incomplete type

Re: error: invalid use of incomplete type

Re: error: invalid use of incomplete type