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-rw-r--r--Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_cflags_strict_prototypes.m4136
1 files changed, 136 insertions, 0 deletions
diff --git a/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_cflags_strict_prototypes.m4 b/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_cflags_strict_prototypes.m4
new file mode 100644
index 00000000000..bd19c17962b
--- /dev/null
+++ b/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_cflags_strict_prototypes.m4
@@ -0,0 +1,136 @@
+dnl /usr/share/aclocal/guidod-cvs/ax_cflags_strict_prototypes.m4
+dnl @synopsis AX_CFLAGS_STRICT_PROTOTYPES [(shellvar [,default, [A/NA]]
+dnl
+dnl Try to find a compiler option that requires strict prototypes.
+dnl
+dnl The sanity check is done by looking at sys/signal.h which has a set
+dnl of macro-definitions SIG_DFL and SIG_IGN that are cast to the local
+dnl signal-handler type. If that signal-handler type is not fully
+dnl qualified then the system headers are not seen as strictly
+dnl prototype clean.
+dnl
+dnl For the GNU CC compiler it will be -fstrict-prototypes
+dnl -Wstrict-prototypes The result is added to the shellvar being
+dnl CFLAGS by default.
+dnl
+dnl DEFAULTS:
+dnl
+dnl - $1 shell-variable-to-add-to : CFLAGS
+dnl - $2 add-value-if-not-found : nothing
+dnl - $3 action-if-found : add value to shellvariable
+dnl - $4 action-if-not-found : nothing
+dnl
+dnl @category C
+dnl @author Guido U. Draheim <guidod@gmx.de>
+dnl @version 2006-12-12
+dnl @license GPLWithACException
+
+AC_DEFUN([AX_CFLAGS_STRICT_PROTOTYPES],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_strict_prototypes])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for strict prototypes],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic % -fstrict-prototypes -Wstrict-prototypes" dnl GCC
+ "-pedantic % -Wstrict-prototypes" dnl try to warn atleast
+ "-pedantic % -Wmissing-prototypes" dnl or another warning
+ "-pedantic % -Werror-implicit-function-declaration" dnl
+ "-pedantic % -Wimplicit-function-declaration" dnl
+ #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+ AC_TRY_COMPILE([],[return 0;],
+ [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+ .|.no|.no,*) ;;
+ *) # sanity check with signal() from sys/signal.h
+ cp config.log config.tmp
+ AC_TRY_COMPILE([#include <signal.h>],[
+ if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
+ if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;],
+ dnl the original did use test -n `$CC testprogram.c`
+ [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
+then VAR="no, suppressed, signal.h," ; fi ; fi],
+ [VAR="no, suppressed, signal.h"])
+ rm config.tmp
+ ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+ .ok|.ok,*) m4_ifvaln($3,$3) ;;
+ .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+ AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+ *) m4_ifvaln($3,$3,[
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_STRICT_PROTOTYPES],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_strict_prototypes])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for strict prototypes],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % -fstrict-prototypes -Wstrict-prototypes" dnl GCC
+ "-pedantic -Werror % -Wstrict-prototypes" dnl try to warn atleast
+ "-pedantic -Werror % -Wmissing-prototypes" dnl try to warn atleast
+ "-pedantic -Werror % -Werror-implicit-function-declaration" dnl
+ "-pedantic -Werror % -Wimplicit-function-declaration" dnl
+ "-pedantic % -Wstrict-prototypes %% no, unsupported in C++" dnl oops
+ #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+ AC_TRY_COMPILE([],[return 0;],
+ [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+ .|.no|.no,*) ;;
+ *) # sanity check with signal() from sys/signal.h
+ cp config.log config.tmp
+ AC_TRY_COMPILE([#include <signal.h>],[
+ if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
+ if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;],
+ dnl the original did use test -n `$CC testprogram.c`
+ [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
+then VAR="no, suppressed, signal.h," ; fi ; fi],
+ [VAR="no, suppressed, signal.h"])
+ rm config.tmp
+ ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+ .ok|.ok,*) m4_ifvaln($3,$3) ;;
+ .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+ AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+ *) m4_ifvaln($3,$3,[
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+