pike.git/ src/ configure.in

2002-10-03

2002-10-03 11:27:24 by Henrik Grubbström (Grubba) <grubba@grubba.org>

• 9b628741a2286efcdabf517866e7a5d7d7a6ec31 (95 lines) (+65/-30) ^{[ Show | Annotate ]}
  Branch: 7.9

Now uses __declspec in preference of __attribute__ if both are available.
This reduces the number of warnings when using ecc.
Now runs cpp with -traditional-cpp on MacOS X in the AC_EGREP_HEADER tests to avoid issues with precompiled headerfiles.

Rev: src/configure.in:1.629

1: - AC_REVISION("$Id: configure.in,v 1.628 2002/09/24 19:50:11 grubba Exp $") + AC_REVISION("$Id: configure.in,v 1.629 2002/10/03 11:27:24 grubba Exp $")   AC_INIT(interpret.c)   AC_CONFIG_HEADER(machine.h)   
241:      if test "x$GCC" = "x"; then    GCC=no - else :; fi + else +  # MacOS X has precompiled headerfiles, which don't +  # work with AC_EGREP_HEADER. +  AC_SYS_COMPILER_FLAG(-traditional-cpp, macosx_traditional_cpp, EXTRACPPFLAGS) + fi      if test "x$GCC" = "xno" -a "x$TCC" = "xno"; then    #
3431:    AC_MSG_CHECKING(for $1 declaration)    AC_CACHE_VAL(pike_cv_decl_$1,    [ +  # EXTRACPPFLAGS is a kludge for MacOS X. +  OLD_CPPFLAGS="$CPPFLAGS" +  CPPFLAGS="$CPPFLAGS $EXTRACPPFLAGS"    pike_cv_decl_$1=nonexistant    for a in $2    do    AC_EGREP_HEADER($1,$a,[ pike_cv_decl_$1=existant; break ])    done -  +  CPPFLAGS="$OLD_CPPFLAGS"    ])    AC_MSG_RESULT($pike_cv_decl_$1)    if test "$pike_cv_decl_$1" = nonexistant; then
4860:      #############################################################################    - AC_MSG_CHECKING(for gcc function attributes) - AC_CACHE_VAL(pike_cv_gcc_attributes, + AC_MSG_CHECKING(for lc __declspec) + AC_CACHE_VAL(pike_cv_lc___declspec,   [    AC_TRY_RUN([   #include <stdarg.h> - void fatal(char *foo,...) __attribute__ ((noreturn,format (printf,1,2))); - int sqr(int x) __attribute__ ((const)); + __declspec(noreturn) void fatal(char *foo,...);    - int sqr(int x) { return x*x; } -  - void fatal(char *foo,...) + __declspec(noreturn) void fatal(char *foo,...)   {    va_list args;    va_start(foo,args);
4881:      int main() { exit(0); }    - ], pike_cv_gcc_attributes=yes, pike_cv_gcc_attributes=no, pike_cv_gcc_attributes=no)]) +  ], pike_cv_lc___declspec=yes, pike_cv_lc___declspec=no, [ +  echo $ac_n "crosscompiling... $ac_c" 1>&6 +  AC_TRY_LINK([ + #include <stdarg.h> + __declspec(noreturn) void fatal(char *foo,...);    - AC_MSG_RESULT($pike_cv_gcc_attributes) - if test "$pike_cv_gcc_attributes" = yes; then -  AC_DEFINE(HAVE_FUNCTION_ATTRIBUTES) - fi + __declspec(noreturn) void fatal(char *foo,...) + { +  va_list args; +  va_start(foo,args); +  printf(foo,args); +  va_end(args); +  exit(2); + } +  ], [ +  exit(0); +  ], pike_cv_lc___declspec=yes, pike_cv_lc___declspec=no) +  ]) + ])    - AC_MSG_CHECKING(for lc __declspec) - AC_CACHE_VAL(pike_cv_lc___declspec, + AC_MSG_RESULT($pike_cv_lc___declspec) + if test "$pike_cv_lc___declspec" = yes; then +  AC_DEFINE(HAVE_DECLSPEC) + else +  +  # NOTE: Avoid using __attribute__ if __declspec is available. +  # This is a kludge to descrease the number of warnings +  # on ecc. +  +  AC_MSG_CHECKING(for gcc function attributes) +  AC_CACHE_VAL(pike_cv_gcc_attributes,    [    AC_TRY_RUN([   #include <stdarg.h> - __declspec(noreturn) void fatal(char *foo,...); + void fatal(char *foo,...) __attribute__ ((noreturn,format (printf,1,2))); + int sqr(int x) __attribute__ ((const));    - __declspec(noreturn) void fatal(char *foo,...) + int sqr(int x) { return x*x; } +  + void fatal(char *foo,...)   {    va_list args;    va_start(foo,args);
4906:      int main() { exit(0); }    -  ], pike_cv_lc___declspec=yes, pike_cv_lc___declspec=no, [ +  ], pike_cv_gcc_attributes=yes, pike_cv_gcc_attributes=no, [    echo $ac_n "crosscompiling... $ac_c" 1>&6    AC_TRY_LINK([   #include <stdarg.h> - __declspec(noreturn) void fatal(char *foo,...); + void fatal(char *foo,...) __attribute__ ((noreturn,format (printf,1,2))); + int sqr(int x) __attribute__ ((const));    - __declspec(noreturn) void fatal(char *foo,...) + int sqr(int x) { return x*x; } +  + void fatal(char *foo,...)   {    va_list args;    va_start(foo,args);
4922:   }    ], [    exit(0); -  ], pike_cv_lc___declspec=yes, pike_cv_lc___declspec=no) +  ], pike_cv_gcc_attributes=yes, pike_cv_gcc_attributes=no)    ])    ])    - AC_MSG_RESULT($pike_cv_lc___declspec) - if test "$pike_cv_lc___declspec" = yes; then -  AC_DEFINE(HAVE_DECLSPEC) +  AC_MSG_RESULT($pike_cv_gcc_attributes) +  if test "$pike_cv_gcc_attributes" = yes; then +  AC_DEFINE(HAVE_FUNCTION_ATTRIBUTES)    fi -  + fi      #############################################################################