Add support for compilers which do not have cname headers

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@201 a592a061-630c-0410-9148-cb99ea01b6c8

ChangeLog

@@ -1,3 +1,18 @@
+1999-10-14  Jean-Marc Lasgouttes  <Jean-Marc.Lasgouttes@inria.fr>
+
+	* acinclude.m4 (LYX_CXX_CHEADERS): New macro. Checks whether the
+	C++ compiler provides wrappers for C headers and use our alternate
+	version otherwise.
+
+	* configure.in: use LYX_CXX_CHEADERS.
+
+	* src/cheader/: new directory, populated with cname headers from
+	libstdc++-2.8.1. They are a bit old, but probably good enough for
+	what we want (support compilers who lack them).
+	
+	* src/insets/Makefile.am, src/mathed/Makefile.am: remove src/support
+	from includes. It turns out is was stupid.
+ 
 1999-10-14  Lars Gullik Bjønnes  <larsbj@lyx.org>
 
 	* lib/Makefile.am (install-data-local): forgot a ';'

acinclude.m4

@@ -374,6 +374,23 @@ if test $lyx_cv_cxx_namespace = yes ; then
    [Define if your C++ compiler has correct support for namespaces])
 fi])
 
+dnl Usage: LYX_CXX_CHEADERS : checks whether the C++ compiler
+dnl   provides wrappers for C headers and use our alternate version otherwise.
+AC_DEFUN(LYX_CXX_CHEADERS,[
+AC_CACHE_CHECK(for C headers wrappers,lyx_cv_cxx_cheaders,
+ [AC_TRY_CPP([
+#include <cctype>
+#include <cerrno>
+#include <cmath>
+#include <csignal>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>],[lyx_cv_cxx_cheaders=yes],[lyx_cv_cxx_cheaders=no])])
+if test $lyx_cv_cxx_cheaders = no ; then
+  LYX_ADD_INC_DIR(lyx_cppflags,\$(top_srcdir)/src/cheaders)  
+fi])
+
 
 dnl Usage LYX_PATH_XPM: Checks for xpm library and header
 AC_DEFUN(LYX_PATH_XPM,[

configure.in

@@ -65,6 +65,7 @@ LYX_CXX_EXPLICIT
 LYX_CXX_STL_STACK
 LYX_CXX_STL_STRING
 LYX_CXX_NAMESPACES
+LYX_CXX_CHEADERS
 LYX_CXX_RTTI
 
 ### Libarary Files

src/cheaders/cctype

@@ -0,0 +1,7 @@
+// The -*- C++ -*- character type header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CCTYPE__
+#define __CCTYPE__
+#include <ctype.h>
+#endif

src/cheaders/cerrno

@@ -0,0 +1,7 @@
+// The -*- C++ -*- error number header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CERRNO__
+#define __CERRNO__
+#include <errno.h>
+#endif

src/cheaders/cmath

@@ -0,0 +1,80 @@
+// The -*- C++ -*- math functions header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CMATH__
+#define __CMATH__
+
+#ifdef __GNUG__
+#include <_G_config.h>
+#endif
+
+#include <math.h>
+
+#ifdef __GNUG__
+#pragma interface "cmath"
+#endif
+
+extern "C++" {
+#if 0
+float acos (float);
+float asin (float);
+float atan (float);
+float atan2(float, float);
+float ceil (float);
+float cos  (float);
+float cosh (float);
+float exp  (float);
+float fabs (float);
+float floor(float);
+float fmod (float, float);
+float frexp(float, int*);
+float modf (float, float*);
+float ldexp(float, int);
+float log  (float);
+float log10(float);
+float pow  (float, float);
+float pow  (float, int);
+float sin  (float);
+float sinh (float);
+float sqrt (float);
+float tan  (float);
+float tanh (float);
+#endif
+
+inline float  abs (float  x) { return fabs (x); }
+#if ! _G_MATH_H_INLINES /* hpux and SCO define this in math.h */
+inline double abs (double x) { return fabs (x); }
+#endif
+
+#if 0
+double pow(double, int);
+
+long double acos (long double);
+long double asin (long double);
+long double atan (long double);
+long double atan2(long double, long double);
+long double ceil (long double);
+long double cos  (long double);
+long double cosh (long double);
+long double exp  (long double);
+long double fabs (long double);
+long double floor(long double);
+long double frexp(long double, int*);
+long double fmod (long double, long double);
+long double frexp(long double, int*);
+long double log  (long double);
+long double log10(long double);
+long double modf (long double, long double*);
+long double pow  (long double, long double);
+long double pow  (long double, int);
+long double sin  (long double);
+long double sinh (long double);
+long double sqrt (long double);
+long double tan  (long double);
+long double tanh (long double);
+#endif
+inline long double abs (long double x) { return fabs (x); }
+
+} // extern "C++"
+
+#endif

src/cheaders/csignal

@@ -0,0 +1,7 @@
+// The -*- C++ -*- signal handling header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CSIGNAL__
+#define __CSIGNAL__
+#include <signal.h>
+#endif

src/cheaders/cstdio

@@ -0,0 +1,7 @@
+// The -*- C++ -*- standard I/O header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CSTDIO__
+#define __CSTDIO__
+#include <stdio.h>
+#endif

src/cheaders/cstdlib

@@ -0,0 +1,23 @@
+// The -*- C++ -*- standard library header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CSTDLIB__
+#define __CSTDLIB__
+#include <stdlib.h>
+
+#ifdef __GNUG__
+#pragma interface "cstdlib"
+#endif
+
+extern "C++" {
+
+#if _G_HAS_LABS
+inline long   abs(long x)		{ return labs (x); }
+#else
+inline long   abs(long x)		{ return x >= 0 ? x : -x; }
+#endif
+//inline ldiv_t div(long x, long y)	{ return ldiv (x, y); }
+
+} // extern "C++"
+
+#endif

src/cheaders/cstring

@@ -0,0 +1,96 @@
+// The -*- C++ -*- null-terminated string header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CSTRING__
+#define __CSTRING__
+
+#include <string.h>
+
+#if 0 // Let's not bother with this just yet.
+#include <cstddef>
+
+#ifdef __GNUG__
+#pragma interface "cstring"
+#endif
+
+// The ANSI C prototypes for these functions have a const argument type and
+// non-const return type, so we can't use them.
+
+extern "C++" {
+extern inline const char *
+_G_strchr (const char *s, int c)
+{
+  return strchr (s, c);
+}
+
+extern inline char *
+_G_strchr (char *s, int c)
+{
+  return const_cast<char *> (strchr (s, c));
+}
+
+extern inline const char *
+_G_strpbrk (const char *s1, const char *s2)
+{
+  return strpbrk (s1, s2);
+}
+
+extern inline char *
+_G_strpbrk (char *s1, const char *s2)
+{
+  return const_cast<char *> (strpbrk (s1, s2));
+}
+
+extern inline const char *
+_G_strrchr (const char *s, int c)
+{
+  return strrchr (s, c);
+}
+
+extern inline char *
+_G_strrchr (char *s, int c)
+{
+  return const_cast<char *> (strrchr (s, c));
+}
+
+extern inline const char *
+_G_strstr (const char *s1, const char *s2)
+{
+  return strstr (s1, s2);
+}
+
+extern inline char *
+_G_strstr (char *s1, const char *s2)
+{
+  return const_cast<char *> (strstr (s1, s2));
+}
+
+extern inline const void *
+_G_memchr (const void *s, int c, size_t n)
+{
+  return memchr (s, c, n);
+}
+
+extern inline void *
+_G_memchr (void *s, int c, size_t n)
+{
+  return const_cast<void *> (memchr (s, c, n));
+}
+} // extern "C++"
+
+// Lose any vendor macros for these functions.
+#undef strchr
+#undef strpbrk
+#undef strrchr
+#undef strstr
+#undef memchr
+
+// Ewww, namespace pollution.  Anyone have a better idea?
+#define strchr  _G_strchr
+#define strpbrk _G_strpbrk
+#define strrchr _G_strrchr
+#define strstr  _G_strstr
+#define memchr  _G_memchr
+#endif // 0
+
+#endif // !defined (__CSTRING__)

src/cheaders/ctime

@@ -0,0 +1,7 @@
+// The -*- C++ -*- time header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CTIME__
+#define __CTIME__
+#include <time.h>
+#endif

src/insets/Makefile.am

@@ -4,7 +4,7 @@ noinst_PROGRAMS = insets.o
 LIBS=
 LDFLAGS=
 ETAGS_ARGS = --c++
-INCLUDES = -I${srcdir}/../ -I${srcdir}/../support
+INCLUDES = -I${srcdir}/../ 
 CXXLINK = $(LD) -r -o $(noinst_PROGRAMS)
 
 insets_o_SOURCES = \

src/mathed/Makefile.am

@@ -4,7 +4,7 @@ noinst_PROGRAMS = mathed.o
 LIBS=
 LDFLAGS=
 ETAGS_ARGS = --c++
-INCLUDES = -I${top_srcdir}/images -I${srcdir}/../ -I${srcdir}/../support
+INCLUDES = -I${top_srcdir}/images -I${srcdir}/../ 
 CXXLINK = $(LD) -r -o $(noinst_PROGRAMS)
 
 mathed_o_SOURCES = array.h \