+2000-05-11 Akim Demaille <akim@epita.fr>
+
+ Merge AC_DECL_YYTEXT into AC_PROG_LEX.
+
+ * acgeneral.m4 (AC_DECL_YYTEXT): Rename as
+ (_AC_DECL_YYTEXT): this.
+ (AC_PROG_LEX): Use it.
+ (AC_DECL_YYTEXT): New AU macro.
+ * doc/autoconf.texi: Adjust.
+
2000-05-10 Akim Demaille <akim@epita.fr>
* aclang.m4 (AC_F77_NAME_MANGLING): Use AC_COMPILE_IFELSE.
lists only specific options.
- --help=recursive, -hr
displays the help of all the embedded packages.
+- Remembers environment variables when reconfiguring.
+ The previous scheme to set envvar before running configure was
+ ENV=VAL ./configure
+ what prevented configure from remembering the environment in which
+ it was run, therefore --recheck was run in an inconsistent
+ environment. Now, one should run
+ ./configure ENV=VAR
+ and then --recheck will work properly. Variables declared with
+ AC_ARG_VAR are also preserved.
** config.status
- faster
Document and ask for the registration of an envvar.
- AC_CONFIG_LINKS
- Replaces the now obsolete AC_LINK_FILES.
+ Replaces AC_LINK_FILES.
- AC_CONFIG_COMMANDS
To add new actions to config.status. Should be used instead of
Checks if the compiler supports ISO C, included when needs special
options.
+- AC_LANG
+ Takes a language as argument and replaces AC_LANG_C,
+ AC_LANG_CPLUSPLUS and AC_LANG_FORTRAN77.
+
+
+** Specific Macros
+
+- AC_PROG_LEX
+ Now integrates `AC_DECL_YYTEXT' which is obsoleted.
+
+- C++ compatibility
+ Almost every single macros has been revisited in order to support at
+ best CC=c++.
+
** Test suite
The testsuite no longer uses DejaGNU. It should be easy to submit
test cases in this new frame work.
** Autoheader
The internal machinery of Autoheader has completely changed. As a
result, using an `acconfig.h' should be considered as obsoleted, and
-you are encouraged to get rid of it using the AH_DEFUN macro.
-
-** Environment variables are kept when reconfiguring.
-The previous scheme to set envvar before running configure was
- ENV=VAL ./configure
-what prevented configure from remembering the environment in which
-it was run, therefore --recheck was run in an inconsistent environment.
-Now, one runs
- ./configure ENV=VAR
-and the --recheck works correctly. Variables declared with AC_ARG_VAR
-are also preserved.
+you are encouraged to get rid of it using the AH macros.
** Fortran 77 compilers
Support for automatically determining a Fortran 77 compilers
# AC_PROG_LEX
# -----------
-AC_DEFUN(AC_PROG_LEX,
+# Look for flex or lex. Set its associated library to LEXLIB.
+# Check if lex declares yytext as a char * by default, not a char[].
+AC_DEFUN([AC_PROG_LEX],
[AH_CHECK_LIB(fl)dnl
AH_CHECK_LIB(l)dnl
AC_CHECK_PROG(LEX, flex, flex, lex)
esac
AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib")
fi
-AC_SUBST(LEXLIB)])
+AC_SUBST(LEXLIB)
+_AC_DECL_YYTEXT])
-# AC_DECL_YYTEXT
-# --------------
+# _AC_DECL_YYTEXT
+# ---------------
# Check if lex declares yytext as a char * by default, not a char[].
-AC_DEFUN([AC_DECL_YYTEXT],
+AC_DEFUN([_AC_DECL_YYTEXT],
[AC_REQUIRE_CPP()dnl
-AC_REQUIRE([AC_PROG_LEX])dnl
AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root,
[# The minimal lex program is just a single line: %%. But some broken lexes
# (Solaris, I think it was) want two %% lines, so accommodate them.
[Define if `lex' declares `yytext' as a `char *' by default,
not a `char[]'.])
fi
-])# AC_DECL_YYTEXT
+])# _AC_DECL_YYTEXT
+
+
+# Require AC_PROG_LEX in case some people were just calling this macro.
+AU_DEFUN([AC_DECL_YYTEXT],
+[AC_REQUIRE([AC_PROG_LEX])])
# AC_PROG_INSTALL
These macros check for particular programs---whether they exist, and
in some cases whether they support certain features.
-@defmac AC_DECL_YYTEXT
-@maindex DECL_YYTEXT
-@cvindex YYTEXT_POINTER
-@ovindex LEX_OUTPUT_ROOT
-Define @code{YYTEXT_POINTER} if @code{yytext} is a @samp{char *} instead
-of a @samp{char []}. Also set output variable @code{LEX_OUTPUT_ROOT} to
-the base of the file name that the lexer generates; usually
-@file{lex.yy}, but sometimes something else. These results vary
-according to whether @code{lex} or @code{flex} is being used.
-@end defmac
-
@defmac AC_PROG_AWK
@maindex PROG_AWK
@ovindex AWK
@maindex PROG_LEX
@ovindex LEX
@ovindex LEXLIB
-If @code{flex} is found, set output variable @code{LEX} to
-@samp{flex} and @code{LEXLIB} to @samp{-lfl}, if that library is in a
-standard place. Otherwise set @code{LEX} to @samp{lex} and
-@code{LEXLIB} to @samp{-ll}.
+@cvindex YYTEXT_POINTER
+@ovindex LEX_OUTPUT_ROOT
+If @code{flex} is found, set output variable @code{LEX} to @samp{flex}
+and @code{LEXLIB} to @samp{-lfl}, if that library is in a standard
+place. Otherwise set @code{LEX} to @samp{lex} and @code{LEXLIB} to
+@samp{-ll}.
+
+Define @code{YYTEXT_POINTER} if @code{yytext} is a @samp{char *} instead
+of a @samp{char []}. Also set output variable @code{LEX_OUTPUT_ROOT} to
+the base of the file name that the lexer generates; usually
+@file{lex.yy}, but sometimes something else. These results vary
+according to whether @code{lex} or @code{flex} is being used.
@end defmac
@defmac AC_PROG_LN_S
@code{AC_C_CROSS}
@end defmac
+@defmac AC_DECL_YYTEXT
+Does nothing, now integrated in @code{AC_PROG_LEX}.
+@end defmac
+
@defmac AC_DYNIX_SEQ
@maindex DYNIX_SEQ
If on Dynix/PTX (Sequent @sc{unix}), add @samp{-lseq} to output variable
# AC_PROG_LEX
# -----------
-AC_DEFUN(AC_PROG_LEX,
+# Look for flex or lex. Set its associated library to LEXLIB.
+# Check if lex declares yytext as a char * by default, not a char[].
+AC_DEFUN([AC_PROG_LEX],
[AH_CHECK_LIB(fl)dnl
AH_CHECK_LIB(l)dnl
AC_CHECK_PROG(LEX, flex, flex, lex)
esac
AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib")
fi
-AC_SUBST(LEXLIB)])
+AC_SUBST(LEXLIB)
+_AC_DECL_YYTEXT])
-# AC_DECL_YYTEXT
-# --------------
+# _AC_DECL_YYTEXT
+# ---------------
# Check if lex declares yytext as a char * by default, not a char[].
-AC_DEFUN([AC_DECL_YYTEXT],
+AC_DEFUN([_AC_DECL_YYTEXT],
[AC_REQUIRE_CPP()dnl
-AC_REQUIRE([AC_PROG_LEX])dnl
AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root,
[# The minimal lex program is just a single line: %%. But some broken lexes
# (Solaris, I think it was) want two %% lines, so accommodate them.
[Define if `lex' declares `yytext' as a `char *' by default,
not a `char[]'.])
fi
-])# AC_DECL_YYTEXT
+])# _AC_DECL_YYTEXT
+
+
+# Require AC_PROG_LEX in case some people were just calling this macro.
+AU_DEFUN([AC_DECL_YYTEXT],
+[AC_REQUIRE([AC_PROG_LEX])])
# AC_PROG_INSTALL
projects / thirdparty / autoconf.git / commitdiff
