mirror of
https://github.com/Hamlib/Hamlib.git
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55d034c834
Cleaned up M4sh syntax for variable quoting, replaced shell 'if' conditionals with M4sh AS_IF macro and shell 'case' with AS_CASE macro. Properly quoted macro variables. Added comments to configure.ac describing actions, commented out obsolete macros, commented obsolecent macros, and added comments for major sections. Corrected a Mingw linker error on the .EXE files adding '--enable-auto-import' to their LD flags. Testing this commit on win32 shows that rigctld is now working properly. Will need to port this to the Stable branch and test. Replaced older local macros with newer replacements from GNU Autoconf archive.
123 lines
4.9 KiB
Plaintext
123 lines
4.9 KiB
Plaintext
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_CFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
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# AX_CXXFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
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# AX_FCFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
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#
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# DESCRIPTION
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#
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# Try to find a compiler option that enables most reasonable warnings.
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#
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# For the GNU compiler it will be -Wall (and -ansi -pedantic) The result
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# is added to the shellvar being CFLAGS, CXXFLAGS, or FCFLAGS by default.
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#
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# Currently this macro knows about the GCC, Solaris, Digital Unix, AIX,
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# HP-UX, IRIX, NEC SX-5 (Super-UX 10), Cray J90 (Unicos 10.0.0.8), and
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# Intel compilers. For a given compiler, the Fortran flags are much more
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# experimental than their C equivalents.
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#
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# - $1 shell-variable-to-add-to : CFLAGS, CXXFLAGS, or FCFLAGS
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# - $2 add-value-if-not-found : nothing
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# - $3 action-if-found : add value to shellvariable
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# - $4 action-if-not-found : nothing
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#
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# NOTE: These macros depend on AX_APPEND_FLAG.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2010 Rhys Ulerich <rhys.ulerich@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 14
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AC_DEFUN([AX_FLAGS_WARN_ALL],[dnl
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AS_VAR_PUSHDEF([FLAGS],[_AC_LANG_PREFIX[]FLAGS])dnl
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AS_VAR_PUSHDEF([VAR],[ac_cv_[]_AC_LANG_ABBREV[]flags_warn_all])dnl
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AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings],
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VAR,[VAR="no, unknown"
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ac_save_[]FLAGS="$[]FLAGS"
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for ac_arg dnl
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in "-warn all % -warn all" dnl Intel
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"-pedantic % -Wall" dnl GCC
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"-xstrconst % -v" dnl Solaris C
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"-std1 % -verbose -w0 -warnprotos" dnl Digital Unix
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"-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
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"-ansi -ansiE % -fullwarn" dnl IRIX
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"+ESlit % +w1" dnl HP-UX C
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"-Xc % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10)
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"-h conform % -h msglevel 2" dnl Cray C (Unicos)
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#
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do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM],
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[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
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done
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FLAGS="$ac_save_[]FLAGS"
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])
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AS_VAR_POPDEF([FLAGS])dnl
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AC_REQUIRE([AX_APPEND_FLAG])
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case ".$VAR" in
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.ok|.ok,*) m4_ifvaln($3,$3) ;;
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.|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;;
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*) m4_default($3,[AX_APPEND_FLAG([$VAR], [$1])]) ;;
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esac
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AS_VAR_POPDEF([VAR])dnl
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])dnl AX_FLAGS_WARN_ALL
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dnl implementation tactics:
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dnl the for-argument contains a list of options. The first part of
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dnl these does only exist to detect the compiler - usually it is
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dnl a global option to enable -ansi or -extrawarnings. All other
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dnl compilers will fail about it. That was needed since a lot of
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dnl compilers will give false positives for some option-syntax
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dnl like -Woption or -Xoption as they think of it is a pass-through
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dnl to later compile stages or something. The "%" is used as a
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dnl delimiter. A non-option comment can be given after "%%" marks
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dnl which will be shown but not added to the respective C/CXXFLAGS.
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AC_DEFUN([AX_CFLAGS_WARN_ALL],[dnl
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AC_LANG_PUSH([C])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([C])
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])
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AC_DEFUN([AX_CXXFLAGS_WARN_ALL],[dnl
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AC_LANG_PUSH([C++])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([C++])
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])
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AC_DEFUN([AX_FCFLAGS_WARN_ALL],[dnl
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AC_LANG_PUSH([Fortran])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([Fortran])
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])
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