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fltk/configure.in
Michael R Sweet 7a9e9468e6 Add -fno-strict-aliasing to compiler options since GCC doesn't understand 
that char * and unsigned char * are safe to interchange (STR #1484)


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5538 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2006-10-31 21:28:11 +00:00

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dnl -*- sh -*-
dnl the "configure" script is made from this by running GNU "autoconf"
dnl
dnl "$Id$"
dnl
dnl Configuration script for the Fast Light Tool Kit (FLTK).
dnl
dnl Copyright 1998-2006 by Bill Spitzak and others.
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Library General Public
dnl License as published by the Free Software Foundation; either
dnl version 2 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Library General Public License for more details.
dnl
dnl You should have received a copy of the GNU Library General Public
dnl License along with this library; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
dnl USA.
dnl
dnl Please report all bugs and problems on the following page:
dnl
dnl http://www.fltk.org/str.php
dnl
dnl We need at least autoconf 2.50...
AC_PREREQ(2.50)
dnl Required file in package...
AC_INIT(src/Fl.cxx)
dnl FLTK library versions...
FL_MAJOR_VERSION=1
FL_MINOR_VERSION=1
FL_PATCH_VERSION=8
FL_API_VERSION=${FL_MAJOR_VERSION}.${FL_MINOR_VERSION}
AC_SUBST(FL_MAJOR_VERSION)
AC_SUBST(FL_MINOR_VERSION)
AC_SUBST(FL_PATCH_VERSION)
AC_SUBST(FL_API_VERSION)
dnl Get the operating system and version number...
uname=`uname`
uversion=`uname -r | sed -e '1,$s/[[^0-9]]//g'`
if test "x$uname" = xIRIX64; then
uname="IRIX"
fi
if test "x$uname" = x; then
# MingW doesn't provide any output when uname is run, even with "-s"...
uname="CYGWIN"
fi
dnl Don't automatically add "-g" to compiler options...
ARCHFLAGS="${ARCHFLAGS:=}"
CFLAGS="${CFLAGS:=}"
CPPFLAGS="${CPPFLAGS:=}"
CXXFLAGS="${CXXFLAGS:=}"
DSOFLAGS="${DSOFLAGS:=}"
LDFLAGS="${LDFLAGS:=}"
OPTIM="${OPTIM:=}"
AC_SUBST(ARCHFLAGS)
AC_SUBST(OPTIM)
dnl OS-specific pre-tests...
case $uname in
CYGWIN* | MINGW*)
# Handle Cygwin option *first*, before all other tests.
AC_ARG_ENABLE(cygwin, [ --enable-cygwin use the CygWin libraries [default=no]])
if test x$enable_cygwin != xyes; then
# NOTE: We can't use ARCHFLAGS for this, since it does not work
# with some of the function tests - Cygwin uses a
# different C library...
CFLAGS="$CFLAGS -mno-cygwin"
CPPFLAGS="$CPPFLAGS -mno-cygwin"
CXXFLAGS="$CXXFLAGS -mno-cygwin"
LDFLAGS="$LDFLAGS -mno-cygwin"
fi
;;
esac
dnl Define the libraries and link options we'll need.
LINKFLTK="../lib/libfltk.a"
LINKFLTKFORMS="../lib/libfltk_forms.a"
LINKFLTKGL="../lib/libfltk_gl.a"
LINKFLTKIMG="../lib/libfltk_images.a"
GLDEMOS="gldemos"
LIBEXT=".a"
LIBNAME="../lib/libfltk.a"
FLLIBNAME="../lib/libfltk_forms.a"
GLLIBNAME="../lib/libfltk_gl.a"
IMGLIBNAME="../lib/libfltk_images.a"
AC_SUBST(FLLIBNAME)
AC_SUBST(GLDEMOS)
AC_SUBST(GLLIBNAME)
AC_SUBST(IMGLIBNAME)
AC_SUBST(LIBEXT)
AC_SUBST(LIBNAME)
AC_SUBST(LINKFLTK)
AC_SUBST(LINKFLTKFORMS)
AC_SUBST(LINKFLTKGL)
AC_SUBST(LINKFLTKIMG)
dnl Handle compile-time options...
AC_ARG_ENABLE(debug, [ --enable-debug turn on debugging [default=no]])
if test x$enable_debug = xyes; then
DEBUGFLAG="-g "
else
DEBUGFLAG=""
fi
AC_ARG_ENABLE(gl, [ --enable-gl turn on OpenGL support [default=yes]])
AC_ARG_ENABLE(shared, [ --enable-shared turn on shared libraries [default=no]])
if test x$enable_shared = xyes; then
PICFLAG=1
SHAREDSUFFIX=""
FLUID="fluid-shared"
case $uname in
Darwin*)
DSONAME="libfltk.$FL_API_VERSION.dylib"
FLDSONAME="libfltk_forms.$FL_API_VERSION.dylib"
GLDSONAME="libfltk_gl.$FL_API_VERSION.dylib"
IMGDSONAME="libfltk_images.$FL_API_VERSION.dylib"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -dynamiclib -lc -o"
;;
SunOS* | UNIX_S*)
DSONAME="libfltk.so.$FL_API_VERSION"
FLDSONAME="libfltk_forms.so.$FL_API_VERSION"
GLDSONAME="libfltk_gl.so.$FL_API_VERSION"
IMGDSONAME="libfltk_images.so.$FL_API_VERSION"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -h \$@ \$(LDLIBS) -G $DEBUGFLAG -o"
if test "x$libdir" != "x/usr/lib"; then
DSOLINK="-R$libdir"
fi
;;
HP-UX*)
DSONAME="libfltk.sl.$FL_API_VERSION"
FLDSONAME="libfltk_forms.sl.$FL_API_VERSION"
GLDSONAME="libfltk_gl.sl.$FL_API_VERSION"
IMGDSONAME="libfltk_images.sl.$FL_API_VERSION"
DSOCOMMAND="ld \$(DSOFLAGS) -b -z +h \$@ $DEBUGFLAG -o"
if test "x$libdir" != "x/usr/lib"; then
DSOLINK="-Wl,-rpath,$libdir"
fi
;;
IRIX*)
DSONAME="libfltk.so.$FL_API_VERSION"
FLDSONAME="libfltk_forms.so.$FL_API_VERSION"
GLDSONAME="libfltk_gl.so.$FL_API_VERSION"
IMGDSONAME="libfltk_images.so.$FL_API_VERSION"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-soname,\$@,-set_version,sgi1.1 \$(LDLIBS) -shared $DEBUGFLAG -o"
if test "x$libdir" != "x/usr/lib" -a "x$libdir" != "x/usr/lib32" -a "x$libdir" != "x/usr/lib64"; then
DSOLINK="-Wl,-rpath,$libdir"
fi
;;
OSF1*)
DSONAME="libfltk.so.$FL_API_VERSION"
FLDSONAME="libfltk_forms.so.$FL_API_VERSION"
GLDSONAME="libfltk_gl.so.$FL_API_VERSION"
IMGDSONAME="libfltk_images.so.$FL_API_VERSION"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-soname,\$@ \$(LDLIBS) -shared $DEBUGFLAG -o"
if test "x$libdir" != "x/usr/lib" -a "x$libdir" != "x/usr/lib32"; then
DSOLINK="-Wl,-rpath,$libdir"
fi
;;
Linux* | *BSD*)
DSONAME="libfltk.so.$FL_API_VERSION"
FLDSONAME="libfltk_forms.so.$FL_API_VERSION"
GLDSONAME="libfltk_gl.so.$FL_API_VERSION"
IMGDSONAME="libfltk_images.so.$FL_API_VERSION"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-soname,\$@ \$(LDLIBS) -shared -fPIC $DEBUGFLAG -o"
if test "x$libdir" != "x/usr/lib"; then
DSOLINK="-Wl,-rpath,$libdir"
fi
;;
AIX*)
DSONAME="libfltk_s.a"
FLDSONAME="libfltk_forms_s.a"
GLDSONAME="libfltk_gl_s.a"
IMGDSONAME="libfltk_images_s.a"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-bexpall,-bM:SRE,-bnoentry -o"
SHAREDSUFFIX="_s"
;;
CYGWIN* | MINGW*)
PICFLAG=0
if test x$enable_cygwin != xyes; then
DSONAME="mgwfltknox-$FL_API_VERSION.dll"
FLDSONAME="mgwfltknox_forms-$FL_API_VERSION.dll"
GLDSONAME="mgwfltknox_gl-$FL_API_VERSION.dll"
IMGDSONAME="mgwfltknox_images-$FL_API_VERSION.dll"
else
DSONAME="cygfltknox-$FL_API_VERSION.dll"
FLDSONAME="cygfltknox_forms-$FL_API_VERSION.dll"
GLDSONAME="cygfltknox_gl-$FL_API_VERSION.dll"
IMGDSONAME="cygfltknox_images-$FL_API_VERSION.dll"
fi
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -shared -Wl,--whole-archive -Wl,--export-all-symbols -Wl,--enable-auto-import -o \$@"
;;
*)
AC_MSG_WARN(Shared libraries may not be supported. Trying -shared option with compiler.)
DSONAME="libfltk.so.$FL_API_VERSION"
FLDSONAME="libfltk_forms.so.$FL_API_VERSION"
GLDSONAME="libfltk_gl.so.$FL_API_VERSION"
IMGDSONAME="libfltk_images.so.$FL_API_VERSION"
DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-soname,\$@ \$(LDLIBS) -shared $DEBUGFLAG -o"
;;
esac
LINKSHARED="-L../src -lfltk_images$SHAREDSUFFIX -lfltk_forms$SHAREDSUFFIX -lfltk$SHAREDSUFFIX"
else
DSOCOMMAND="echo"
DSOLINK=""
DSONAME=""
FLDSONAME=""
GLDSONAME=""
IMGDSONAME=""
PICFLAG=0
SHAREDSUFFIX=""
FLUID="fluid"
LINKSHARED="../lib/libfltk_images.a ../lib/libfltk_forms.a ../lib/libfltk.a"
fi
AC_SUBST(DSOCOMMAND)
AC_SUBST(DSOFLAGS)
AC_SUBST(DSOLINK)
AC_SUBST(DSONAME)
AC_SUBST(FLDSONAME)
AC_SUBST(GLDSONAME)
AC_SUBST(IMGDSONAME)
AC_SUBST(SHAREDSUFFIX)
AC_SUBST(LINKSHARED)
AC_SUBST(FLUID)
AC_ARG_ENABLE(threads, [ --enable-threads enable multi-threading support])
AC_ARG_WITH(optim, [ --with-optim="flags" use custom optimization flags])
AC_ARG_WITH(archflags, [ --with-archflags="flags"
use custom architecture flags],
ARCHFLAGS="$withval")
case $uname in
Darwin*)
AC_ARG_ENABLE(quartz, [ --enable-quartz use Quartz instead of Quickdraw (default=no)])
if test "x$enable_quartz" = "xyes"; then
AC_DEFINE(USE_QUARTZ, 1)
AC_DEFINE(__APPLE_QUARTZ__)
else
AC_DEFINE(__APPLE_QD__)
fi
;;
esac
dnl Find commands...
AC_PROG_CC
AC_PROG_CXX
dnl AC_PROG_INSTALL
AC_PATH_PROG(NROFF,nroff)
if test "x$NROFF" = "x:"; then
AC_PATH_PROG(GROFF,groff)
if test "x$GROFF" = "x:"; then
NROFF="echo"
else
NROFF="$GROFF -T ascii"
fi
fi
AC_PATH_PROG(HTMLDOC,htmldoc)
dnl How do we make libraries?
AC_PROG_RANLIB
AC_PATH_PROG(AR, ar)
if test "x$AR" = "x:"; then
AC_MSG_ERROR(Configure could not find the library archiver, aborting.)
fi
if test "x$RANLIB" != "x:"; then
LIBCOMMAND="$AR cr"
else
LIBCOMMAND="$AR crs"
fi
AC_SUBST(LIBCOMMAND)
dnl Architecture checks...
AC_C_BIGENDIAN
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
if test $ac_cv_sizeof_short -eq 2; then
AC_DEFINE(U16,unsigned short)
fi
if test $ac_cv_sizeof_int -eq 4; then
AC_DEFINE(U32,unsigned)
else
if test $ac_cv_sizeof_long -eq 4; then
AC_DEFINE(U32,unsigned long)
fi
fi
if test $ac_cv_sizeof_int -eq 8; then
AC_DEFINE(U64,unsigned)
else
if test $ac_cv_sizeof_long -eq 8; then
AC_DEFINE(U64,unsigned long)
fi
fi
dnl Does the C++ compiler support the bool type?
AC_CACHE_CHECK(whether the compiler recognizes bool as a built-in type,
ac_cv_cxx_bool,[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([
int f(int x){return 1;}
int f(char x){return 1;}
int f(bool x){return 1;}
],[
bool b = true;
return f(b);
], ac_cv_cxx_bool=yes, ac_cv_cxx_bool=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_bool" != yes; then
CXXFLAGS="-Dbool=char -Dfalse=0 -Dtrue=1 $CXXFLAGS"
fi
dnl Standard headers and functions...
AC_HEADER_DIRENT
AC_CHECK_HEADER(sys/select.h,AC_DEFINE(HAVE_SYS_SELECT_H))
AC_CHECK_HEADER(sys/stdtypes.h,AC_DEFINE(HAVE_SYS_SELECT_H))
AC_CHECK_FUNC(scandir,
if test "x$uname" = xSunOS -o "x$uname" = xQNX; then
AC_MSG_WARN(Not using $uname scandir emulation function.)
else
AC_DEFINE(HAVE_SCANDIR)
fi)
AC_CHECK_FUNC(vsnprintf,[
case "$uname" in
HP-UX*)
if test "$uversion" = "1020"; then
AC_MSG_WARN(Not using built-in vsnprintf function because you are running HP-UX 10.20.)
else
AC_DEFINE(HAVE_VSNPRINTF)
fi
;;
OSF1*)
if test "$uversion" = "40"; then
AC_MSG_WARN(Not using built-in vsnprintf function because you are running Tru64 4.0.)
else
AC_DEFINE(HAVE_VSNPRINTF)
fi
;;
*)
AC_DEFINE(HAVE_VSNPRINTF)
;;
esac])
AC_CHECK_FUNC(snprintf,[
case "$uname" in
HP-UX*)
if test "$uversion" = "1020"; then
AC_MSG_WARN(Not using built-in snprintf function because you are running HP-UX 10.20.)
else
AC_DEFINE(HAVE_SNPRINTF)
fi
;;
OSF1*)
if test "$uversion" = "40"; then
AC_MSG_WARN(Not using built-in snprintf function because you are running Tru64 4.0.)
else
AC_DEFINE(HAVE_SNPRINTF)
fi
;;
*)
AC_DEFINE(HAVE_SNPRINTF)
;;
esac])
AC_CHECK_HEADER(strings.h, AC_DEFINE(HAVE_STRINGS_H))
AC_CHECK_FUNCS(strcasecmp strlcat strlcpy)
AC_CHECK_HEADER(locale.h, AC_DEFINE(HAVE_LOCALE_H))
AC_CHECK_FUNCS(localeconv)
dnl FLTK library uses math library functions...
AC_SEARCH_LIBS(pow, m)
dnl Check for largefile support...
AC_SYS_LARGEFILE
dnl Define largefile options as needed...
LARGEFILE=""
if test x$enable_largefile = xyes; then
LARGEFILE="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
if test $ac_cv_sys_large_files = 1; then
LARGEFILE="$LARGEFILE -D_LARGE_FILES"
fi
if test $ac_cv_sys_file_offset_bits = 64; then
LARGEFILE="$LARGEFILE -D_FILE_OFFSET_BITS=64"
fi
fi
AC_SUBST(LARGEFILE)
dnl Check for "long long" support...
AC_CACHE_CHECK(for long long int, ac_cv_c_long_long,
[if test "$GCC" = yes; then
ac_cv_c_long_long=yes
else
AC_TRY_COMPILE(,[long long int i;],
ac_cv_c_long_long=yes,
ac_cv_c_long_long=no)
fi])
if test $ac_cv_c_long_long = yes; then
AC_DEFINE(HAVE_LONG_LONG)
fi
AC_CHECK_FUNC(strtoll, AC_DEFINE(HAVE_STRTOLL))
dnl Check for audio libraries...
AUDIOLIBS=""
case $uname in
CYGWIN* | MINGW*)
dnl Cygwin environment...
AUDIOLIBS="-lwinmm"
;;
Darwin*)
AUDIOLIBS="-framework CoreAudio"
;;
*)
AC_CHECK_HEADER(alsa/asoundlib.h,
AC_DEFINE(HAVE_ALSA_ASOUNDLIB_H)
AUDIOLIBS="-lasound")
;;
esac
AC_SUBST(AUDIOLIBS)
dnl Check for image libraries...
SAVELIBS="$LIBS"
IMAGELIBS=""
AC_SUBST(IMAGELIBS)
AC_ARG_ENABLE(localjpeg, [ --enable-localjpeg use local JPEG library, default=auto],
[if test x$enable_localjpeg = xyes; then
ac_cv_lib_jpeg_jpeg_CreateCompress=no
fi])
AC_CHECK_LIB(jpeg,jpeg_CreateCompress,
AC_DEFINE(HAVE_LIBJPEG)
JPEGINC=""
JPEG=""
IMAGELIBS="-ljpeg $IMAGELIBS",
if test x$enable_localjpeg = xno; then
JPEGINC=""
JPEG=""
else
AC_DEFINE(HAVE_LIBJPEG)
JPEGINC="-I../jpeg"
JPEG="jpeg"
IMAGELIBS="-lfltk_jpeg $IMAGELIBS"
fi)
AC_ARG_ENABLE(localzlib, [ --enable-localzlib use local ZLIB library, default=auto],
[if test x$enable_localzlib = xyes; then
ac_cv_lib_z_gzgets=no
fi])
AC_CHECK_LIB(z,gzgets,
AC_DEFINE(HAVE_LIBZ)
ZLIBINC=""
ZLIB=""
LIBS="-lz $LIBS"
IMAGELIBS="-lz $IMAGELIBS",
if test x$enable_localzlib = xno; then
ZLIBINC=""
ZLIB=""
else
AC_DEFINE(HAVE_LIBZ)
ZLIBINC="-I../zlib"
ZLIB="zlib"
LIBS="-lfltk_z $LIBS"
IMAGELIBS="-lfltk_z $IMAGELIBS"
fi)
AC_ARG_ENABLE(localpng, [ --enable-localpng use local PNG library, default=auto],
[if test x$enable_localpng = xyes; then
ac_cv_lib_png_png_set_tRNS_to_alpha=no
fi])
AC_CHECK_LIB(png,png_set_tRNS_to_alpha, [
PNGINC=""
PNG=""
IMAGELIBS="-lpng $IMAGELIBS"
AC_DEFINE(HAVE_LIBPNG)
AC_CHECK_HEADER(png.h, AC_DEFINE(HAVE_PNG_H))],[
if test x$enable_localpng = xno; then
PNGINC=""
PNG=""
else
AC_DEFINE(HAVE_LIBPNG)
AC_DEFINE(HAVE_PNG_H)
PNGINC="-I../png"
PNG="png"
IMAGELIBS="-lfltk_png $IMAGELIBS"
fi])
AC_SUBST(JPEG)
AC_SUBST(JPEGINC)
AC_SUBST(PNG)
AC_SUBST(PNGINC)
AC_SUBST(ZLIB)
AC_SUBST(ZLIBINC)
dnl Restore original LIBS settings...
LIBS="$SAVELIBS"
dnl See if we need a .exe extension on executables...
AC_EXEEXT
dnl Check for pthreads for multi-threaded apps...
have_pthread=no
if test "x$enable_threads" = xyes; then
AC_CHECK_HEADER(pthread.h, AC_DEFINE(HAVE_PTHREAD_H))
AC_CHECK_LIB(pthread, pthread_create)
if test "x$ac_cv_lib_pthread_pthread_create" = xyes -a x$ac_cv_header_pthread_h = xyes; then
have_pthread=yes
else
dnl *BSD uses -pthread option...
AC_MSG_CHECKING([for pthread_create using -pthread])
SAVELIBS="$LIBS"
LIBS="-pthread $LIBS"
AC_TRY_LINK([#include <pthread.h>],
[pthread_create(0, 0, 0, 0);],
LIBS="-pthread $SAVELIBS"
have_pthread=yes,
LIBS="$SAVELIBS")
AC_MSG_RESULT([$have_pthread])
fi
fi
dnl Define OS-specific stuff...
HLINKS=
POSTBUILD=:
THREADS=
AC_ARG_WITH(links, [ --with-links make header links for common misspellings])
INSTALL_DESKTOP=""
UNINSTALL_DESKTOP=""
case $uname in
CYGWIN* | MINGW*)
dnl Cygwin environment...
CFLAGS="-mwindows -DWIN32 $CFLAGS"
CXXFLAGS="-mwindows -DWIN32 $CXXFLAGS"
LDFLAGS="-mwindows $LDFLAGS"
LIBS="$LIBS -lole32 -luuid -lcomctl32 -lwsock32"
OPTIM="$OPTIM"
if test x$enable_gl != xno; then
AC_CHECK_HEADER(GL/gl.h,
AC_DEFINE(HAVE_GL)
GLLIB="-lopengl32")
AC_CHECK_HEADER(GL/glu.h,
AC_DEFINE(HAVE_GL_GLU_H)
GLLIB="-lglu32 $GLLIB")
else
LINKFLTKGL=""
GLLIBNAME=""
GLDSONAME=""
GLDEMOS=""
fi
if test "x$enable_threads" = xyes; then
if test x$have_pthread = xyes; then
AC_DEFINE(HAVE_PTHREAD)
fi
THREADS="threads.exe"
fi
# Don't make symlinks since Windows is not case sensitive.
if test "x$with_links" != xyes; then
HLINKS="#"
fi
;;
Darwin*)
# MacOS X uses Carbon for graphics...
LIBS="$LIBS -framework Carbon -framework ApplicationServices"
if test x$have_pthread = xyes; then
AC_DEFINE(HAVE_PTHREAD)
THREADS="threads"
fi
if test x$enable_gl != xno; then
AC_DEFINE(HAVE_GL)
AC_DEFINE(HAVE_GL_GLU_H)
GLLIB="-framework AGL -framework OpenGL"
else
LINKFLTKGL=""
GLLIBNAME=""
GLDSONAME=""
GLDEMOS=""
fi
# Don't make symlinks because HFS+ is not case sensitive...
if test "x$with_links" != xyes; then
HLINKS="#"
fi
# Add a postbuild step after linking applications
POSTBUILD="/Developer/Tools/Rez -t APPL -o"
# Install/Uninstall FLUID application
INSTALL_DESKTOP="install-osx"
UNINSTALL_DESKTOP="uninstall-osx"
;;
*)
# All others are UNIX/X11...
if test x$have_pthread = xyes; then
AC_DEFINE(HAVE_PTHREAD)
THREADS="threads"
fi
dnl Check for X11...
AC_PATH_XTRA
if test x$no_x = xyes; then
AC_MSG_ERROR(Configure could not find required X11 libraries, aborting.)
fi
if test "x$X_PRE_LIBS" != x; then
AC_MSG_WARN(Ignoring libraries \"$X_PRE_LIBS\" requested by configure.)
fi
LIBS="$LIBS -lXext -lX11 $X_EXTRA_LIBS"
CFLAGS="$CFLAGS $X_CFLAGS"
CXXFLAGS="$CXXFLAGS $X_CFLAGS"
LDFLAGS="$X_LIBS $LDFLAGS"
DSOFLAGS="$X_LIBS $DSOFLAGS"
if test "x$x_includes" != x; then
ac_cpp="$ac_cpp -I$x_includes"
fi
dnl Check for OpenGL unless disabled...
GLLIB=
if test x$enable_gl != xno; then
AC_SEARCH_LIBS(dlopen, dl)
AC_CHECK_HEADER(GL/gl.h,
AC_CHECK_LIB(GL, glXMakeCurrent, AC_DEFINE(HAVE_GL) GLLIB="-lGL", \
AC_CHECK_LIB(MesaGL,glXMakeCurrent, AC_DEFINE(HAVE_GL) GLLIB=" -lMesaGL",,\
-lm), \
-lm)
)
AC_CHECK_HEADER(GL/glu.h,
AC_DEFINE(HAVE_GL_GLU_H)
if test x$ac_cv_lib_GL_glXMakeCurrent = xyes; then
GLLIB="-lGLU $GLLIB"
fi
if test x$ac_cv_lib_MesaGL_glXMakeCurrent = xyes; then
GLLIB="-lMesaGLU $GLLIB"
fi
)
if test x$ac_cv_lib_GL_glXMakeCurrent != xyes -a x$ac_cv_lib_MesaGL_glXMakeCurrent != xyes; then
LINKFLTKGL=""
GLLIBNAME=""
GLDSONAME=""
GLDEMOS=""
fi
else
LINKFLTKGL=""
GLLIBNAME=""
GLDSONAME=""
GLDEMOS=""
fi
dnl Check for Xinerama support unless disabled...
AC_ARG_ENABLE(xinerama, [ --enable-xinerama turn on Xinerama support [default=no]])
if test x$enable_xinerama = xyes; then
AC_CHECK_LIB(Xinerama,XineramaIsActive,
AC_DEFINE(HAVE_XINERAMA)
LIBS="-lXinerama $LIBS")
fi
dnl Check for the Xft library unless disabled...
AC_ARG_ENABLE(xft, [ --enable-xft turn on Xft support [default=no]])
if test x$enable_xft = xyes; then
AC_PATH_PROG(FTCONFIG,freetype-config)
if test "x$FTCONFIG" != x; then
CPPFLAGS="`$FTCONFIG --cflags` $CPPFLAGS"
CXXFLAGS="`$FTCONFIG --cflags` $CXXFLAGS"
AC_CHECK_HEADER(X11/Xft/Xft.h,
AC_CHECK_LIB(Xft, XftDrawCreate,
AC_DEFINE(USE_XFT)
LIBS="-lXft $LIBS"))
fi
fi
dnl Check for the Xdbe extension unless disabled...
AC_ARG_ENABLE(xdbe, [ --enable-xdbe turn on Xdbe support [default=no]])
if test x$enable_xdbe = xyes; then
AC_CHECK_HEADER(X11/extensions/Xdbe.h, AC_DEFINE(HAVE_XDBE),,
[#include <X11/Xlib.h>])
fi
dnl Check for overlay visuals...
AC_PATH_PROG(XPROP, xprop)
AC_CACHE_CHECK(for X overlay visuals, ac_cv_have_overlay,
if test "x$XPROP" != x; then
if $XPROP -root 2>/dev/null | grep -c "SERVER_OVERLAY_VISUALS" >/dev/null; then
ac_cv_have_overlay=yes
else
ac_cv_have_overlay=no
fi
else
ac_cv_have_overlay=no
fi)
if test x$ac_cv_have_overlay = xyes; then
AC_DEFINE(HAVE_OVERLAY)
fi
# Make symlinks since UNIX/Linux is case sensitive.
if test "x$with_links" = xno; then
HLINKS="#"
fi
# Install/Uninstall FLUID application support files
INSTALL_DESKTOP="install-linux"
UNINSTALL_DESKTOP="uninstall-linux"
;;
esac
AC_SUBST(GLDEMOS)
AC_SUBST(GLLIB)
AC_SUBST(HLINKS)
AC_SUBST(POSTBUILD)
AC_SUBST(THREADS)
AC_SUBST(INSTALL_DESKTOP)
AC_SUBST(UNINSTALL_DESKTOP)
dnl Figure out the appropriate formatted man page extension...
case "$uname" in
*BSD* | Darwin*)
# *BSD
CAT1EXT=0
CAT3EXT=0
CAT6EXT=0
;;
IRIX*)
# SGI IRIX
CAT1EXT=z
CAT3EXT=z
CAT6EXT=z
;;
*)
# All others
CAT1EXT=1
CAT3EXT=3
CAT6EXT=6
;;
esac
AC_SUBST(CAT1EXT)
AC_SUBST(CAT3EXT)
AC_SUBST(CAT6EXT)
dnl Fix "mandir" variable...
if test "$mandir" = "\${prefix}/man" -a "$prefix" = "/usr"; then
case "$uname" in
*BSD* | Darwin* | Linux*)
# *BSD, Darwin, and Linux
mandir="\${prefix}/share/man"
;;
IRIX*)
# SGI IRIX
mandir="\${prefix}/share/catman"
;;
esac
fi
dnl Fix "libdir" variable...
if test "$prefix" = NONE; then
prefix=/usr/local
fi
if test "$exec_prefix" = NONE; then
exec_prefix="\${prefix}"
fi
if test "$uname" = "IRIX" -a $uversion -ge 62 -a "$libdir" = "\${exec_prefix}/lib" -a "$exec_prefix" = "\${prefix}" -a "$prefix" = "/usr"; then
libdir="/usr/lib32"
fi
dnl Define the command used to update the dependencies (this option
dnl mainly for FLTK core developers - not necessary for users)
MAKEDEPEND="\$(CXX) -M"
AC_SUBST(MAKEDEPEND)
dnl Add warnings to compiler switches:
dnl do this last so messing with switches does not break tests
if test -n "$GCC"; then
# Show all standard warnings + unused variables, conversion errors,
# and inlining problems when compiling...
OPTIM="-Wall -Wunused -Wno-format-y2k $OPTIM"
# The following additional warnings are useful for tracking down problems...
#OPTIM="-Wshadow -Wconversion $OPTIM"
# Set the default compiler optimizations...
if test -z "$DEBUGFLAG"; then
#
# Note: Can't use -fomit-frame-pointer - prevents tools like
# libsafe from working!
#
# Don't use -fforce-mem, -fforce-addr, or -fcaller-saves.
# They all seem to make either no difference or enlarge
# the code by a few hundred bytes.
#
# "-Os" seems to be the best compromise between speed and
# code size. "-O3" and higher seem to make no effective
# difference in the speed of the code, but does bloat the
# library 10+%.
#
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="-Os $OPTIM"
fi
fi
# Generate position-independent code when needed...
if test $PICFLAG = 1; then
OPTIM="$OPTIM -fPIC"
fi
# See if GCC supports -fno-exceptions...
AC_MSG_CHECKING(if GCC supports -fno-exceptions)
OLDCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-exceptions"
AC_TRY_COMPILE(,,
OPTIM="$OPTIM -fno-exceptions"
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))
CFLAGS="$OLDCFLAGS"
# See if GCC supports -fno-strict-aliasing...
AC_MSG_CHECKING(if GCC supports -fno-strict-aliasing)
OLDCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-strict-aliasing"
AC_TRY_COMPILE(,,
OPTIM="$OPTIM -fno-strict-aliasing"
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))
CFLAGS="$OLDCFLAGS"
# See if we are running Solaris; if so, try the -fpermissive option...
# This option is required on some versions of Solaris to work around
# bugs in the X headers up through Solaris 7.
#
# Unlike the other compiler/optimization settings, this one is placed
# in CFLAGS and CXXFLAGS so that fltk-config will provide the option
# to clients - otherwise client apps will not compile properly...
if test "$uname" = SunOS; then
AC_MSG_CHECKING(if GCC supports -fpermissive)
OLDCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fpermissive"
AC_TRY_COMPILE(,,
CXXFLAGS="$CXXFLAGS -fpermissive"
AC_MSG_RESULT(yes),
CFLAGS="$OLDCFLAGS"
AC_MSG_RESULT(no))
fi
else
case "$uname" in
IRIX*)
# Running some flavor of IRIX; see which version and
# set things up according...
if test "$uversion" -ge 62; then
# We are running IRIX 6.2 or higher; uncomment the following
# lines if you don't have IDO 7.2 or higher:
#
# CXX="CC -n32 -mips3"
# CC="cc -n32 -mips3"
# LD="ld -n32 -mips3"
# MAKEDEPEND="CC -M"
if test "x`grep abi=n32 /etc/compiler.defaults`" = x; then
AC_MSG_WARN(FOR BEST RESULTS BEFORE COMPILING: setenv SGI_ABI \"-n32 -mips3\")
fi
OPTIM="-fullwarn $OPTIM"
fi
if test -z "$DEBUGFLAG"; then
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="-O2 $OPTIM"
if test $uversion -gt 62; then
OPTIM="-OPT:Olimit=4000 $OPTIM"
fi
fi
fi
;;
HP-UX*)
# Running HP-UX; these options should work for the HP compilers.
if test -z "$DEBUGFLAG"; then
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="+O2 $OPTIM"
fi
fi
if test $PICFLAG = 1; then
OPTIM="+z $OPTIM"
fi
CXXFLAGS="$CXXFLAGS +W336,501,736,740,749,829"
;;
OSF1*)
# Running Digital/Tru64 UNIX; these options should work for the
# Digital/Compaq/NewHP compilers.
if test -z "$DEBUGFLAG"; then
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="-O2 $OPTIM"
fi
fi
;;
SunOS*)
# Solaris
if test -z "$DEBUGFLAG"; then
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="-xO3 $OPTIM"
fi
fi
if test $PICFLAG = 1; then
OPTIM="-KPIC $OPTIM"
fi
;;
AIX*)
if test -z "$DEBUGFLAG"; then
if test "x$with_optim" != x; then
OPTIM="$with_optim $OPTIM"
else
OPTIM="-O2 $OPTIM"
fi
fi
AC_MSG_WARN(The AIX C and C++ compilers are known not to correctly compile the FLTK library.)
;;
*)
# Running some other operating system; inform the user they
# should contribute the necessary options to fltk-bugs@fltk.org...
AC_MSG_WARN(Building FLTK with default compiler optimizations)
AC_MSG_WARN(Contact fltk-bugs@fltk.org with uname and compiler options.)
;;
esac
fi
OPTIM="$DEBUGFLAG $OPTIM"
dnl Define the FLTK documentation directory...
if test x$prefix = xNONE; then
AC_DEFINE_UNQUOTED(FLTK_DOCDIR, "/usr/local/share/doc/fltk")
else
AC_DEFINE_UNQUOTED(FLTK_DOCDIR, "$prefix/share/doc/fltk")
fi
dnl Define the FLTK data directory...
if test x$prefix = xNONE; then
AC_DEFINE_UNQUOTED(FLTK_DATADIR, "/usr/local/share/fltk")
else
AC_DEFINE_UNQUOTED(FLTK_DATADIR, "$prefix/share/fltk")
fi
dnl Write all of the files...
AC_CONFIG_HEADER(config.h:configh.in)
AC_OUTPUT(makeinclude fltk.list fltk-config fltk.spec FL/Makefile)
dnl Make sure the fltk-config script is executable...
chmod +x fltk-config
dnl
dnl End of "$Id$".
dnl
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