On 09/08/2014 09:37 AM, Marko Lindqvist wrote:
Is there need to update documentation abour $GCC to say that it should not be taken literally, but just to mean some kind of gcc compatibility.
Thanks, good suggestion. I installed the attached patch.
>From ae3551f8d136968d18cac50810355d4160fa0427 Mon Sep 17 00:00:00 2001 From: Paul Eggert <eggert@xxxxxxxxxxx> Date: Mon, 8 Sep 2014 10:15:34 -0700 Subject: [PATCH] doc: distinguish GCC from GNU C, etc. * doc/autoconf.texi (C Compiler, Objective C Compiler) (Objective C++ Compiler, Fortran Compiler): Be more careful about distinguishing GNU C from GCC, and similarly for other languages. Problem reported by Marko Lindqvist in: http://lists.gnu.org/archive/html/autoconf/2014-09/msg00027.html --- doc/autoconf.texi | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/doc/autoconf.texi b/doc/autoconf.texi index ebb0a01..e2137ae 100644 --- a/doc/autoconf.texi +++ b/doc/autoconf.texi @@ -7206,10 +7206,10 @@ declarations, named initialization of structs, @code{restrict}, loops, and variable length arrays. Test for C89 support by checking for function prototypes. -If using the GNU C compiler, set shell variable @code{GCC} to +If using a compiler that supports GNU C, set shell variable @code{GCC} to @samp{yes}. If output variable @code{CFLAGS} was not already set, set -it to @option{-g -O2} for the GNU C compiler (@option{-O2} on systems -where GCC does not accept @option{-g}), or @option{-g} for +it to @option{-g -O2} for a GNU C compiler (@option{-O2} on systems +where the compiler does not accept @option{-g}), or @option{-g} for other compilers. If your package does not like this default, then it is acceptable to insert the line @samp{: $@{CFLAGS=""@}} after @code{AC_INIT} and before @code{AC_PROG_CC} to select an empty default instead. @@ -7503,7 +7503,7 @@ obsolescent and new programs should use @code{__STDC_NO_VLA__}. @acindex{C_TYPEOF} @cvindex HAVE_TYPEOF @cvindex typeof -If the C compiler supports GCC's @code{typeof} syntax either +If the C compiler supports GNU C's @code{typeof} syntax either directly or through a different spelling of the keyword (e.g., @code{__typeof__}), define @code{HAVE_TYPEOF}. If the support is available only through a @@ -7528,7 +7528,7 @@ New programs need not use this macro. @defmac AC_PROG_GCC_TRADITIONAL @acindex{PROG_GCC_TRADITIONAL} @ovindex CC -Add @option{-traditional} to output variable @code{CC} if using the +Add @option{-traditional} to output variable @code{CC} if using a GNU C compiler and @code{ioctl} does not work properly without @option{-traditional}. That usually happens when the fixed header files have not been installed on an old system. @@ -7656,10 +7656,10 @@ like this: AC_PROG_OBJC([gcc objcc objc]) @end example -If using the GNU Objective C compiler, set shell variable +If using a compiler that supports GNU Objective C, set shell variable @code{GOBJC} to @samp{yes}. If output variable @code{OBJCFLAGS} was not -already set, set it to @option{-g -O2} for the GNU Objective C -compiler (@option{-O2} on systems where @command{gcc} does not accept +already set, set it to @option{-g -O2} for a GNU Objective C +compiler (@option{-O2} on systems where the compiler does not accept @option{-g}), or @option{-g} for other compilers. @end defmac @@ -7697,10 +7697,10 @@ like this: AC_PROG_OBJCXX([gcc g++ objcc++ objcxx]) @end example -If using the GNU Objective C++ compiler, set shell variable +If using a compiler that supports GNU Objective C++, set shell variable @code{GOBJCXX} to @samp{yes}. If output variable @code{OBJCXXFLAGS} was not -already set, set it to @option{-g -O2} for the GNU Objective C++ -compiler (@option{-O2} on systems where @command{gcc} does not accept +already set, set it to @option{-g -O2} for a GNU Objective C++ +compiler (@option{-O2} on systems where the compiler does not accept @option{-g}), or @option{-g} for other compilers. @end defmac @@ -7818,12 +7818,12 @@ example, if you didn't like the default order, then you could invoke AC_PROG_F77([fl32 f77 fort77 xlf g77 f90 xlf90]) @end example -If using @code{g77} (the GNU Fortran 77 compiler), then +If using a compiler that supports GNU Fortran 77, set the shell variable @code{G77} to @samp{yes}. If the output variable @code{FFLAGS} was not already set in the -environment, then set it to @option{-g -02} for @code{g77} (or @option{-O2} -where @code{g77} does not accept @option{-g}). Otherwise, set -@code{FFLAGS} to @option{-g} for all other Fortran 77 compilers. +environment, set it to @option{-g -02} for @code{g77} (or @option{-O2} +where the GNU Fortran 77 compiler does not accept @option{-g}), or +@option{-g} for other compilers. The result of the GNU test is cached in the @code{ac_cv_f77_compiler_gnu} variable, acceptance of @option{-g} in the @@ -7858,12 +7858,12 @@ This macro may, alternatively, be invoked with an optional first argument which, if specified, must be a blank-separated list of Fortran compilers to search for, just as in @code{AC_PROG_F77}. -If using @code{gfortran} or @code{g77} (the GNU Fortran compilers), then +If using a compiler that supports GNU Fortran, set the shell variable @code{GFC} to @samp{yes}. If the output variable @code{FCFLAGS} was not already set in the -environment, then set it to @option{-g -02} for GNU @code{g77} (or -@option{-O2} where @code{g77} does not accept @option{-g}). Otherwise, -set @code{FCFLAGS} to @option{-g} for all other Fortran compilers. +environment, then set it to @option{-g -02} for a GNU Fortran compiler (or +@option{-O2} where the compiler does not accept @option{-g}), or +@option{-g} for other compilers. The result of the GNU test is cached in the @code{ac_cv_fc_compiler_gnu} variable, acceptance of @option{-g} in the @code{ac_cv_prog_fc_g} -- 1.9.3
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