Update upstream source from tag 'upstream/4.7'

Update to upstream version '4.7'
with Debian dir d3e11463c915e5c39507206197eb3acd42bb8f5f

1 files changed, 26 insertions, 15 deletions

diff --git a/configure.ac b/configure.ac
index 119bd7f..67ef049 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([libHX], [3.25])
+AC_INIT([libHX], [4.7])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
@@ -11,9 +11,15 @@ AC_PROG_CXX
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 AC_DISABLE_STATIC
-AC_LIBTOOL_DLOPEN
 AM_PROG_LIBTOOL
 
+saved_CXXFLAGS="$CXXFLAGS"
+regular_CPPFLAGS="-D_FILE_OFFSET_BITS=64 -D_REENTRANT"
+regular_CFLAGS="-Wall -Waggregate-return -Wmissing-declarations \
+	-Wmissing-prototypes -Wredundant-decls -Wshadow -Wstrict-prototypes \
+	-Wformat=2 -pipe $visibility_CFLAGS"
+regular_CXXFLAGS="-Wall -Wno-pointer-arith -Wredundant-decls -pipe \
+	$visibility_CFLAGS"
 #
 # Check whether there really is a C++ compiler.
 # It is not mandatory to compile libHX, but we want to know.
@@ -22,6 +28,21 @@ AC_LANG_PUSH([C++])
 AC_COMPILE_IFELSE(
 	[AC_LANG_PROGRAM([], [return 0;])],
 	[ac_cv_cxx=yes], [ac_cv_cxx=no])
+AC_MSG_CHECKING([available C++ standard])
+cxxmode=""
+for i in "c++20" "c++17"; do
+	AS_IF([test "$i" = "c++20" && test -n "$COVERITY"], [continue])
+	CXXFLAGS="$saved_CXXFLAGS -std=$i"
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], [cxxmode="$i"])
+	AS_IF([test -n "$cxxmode"], [break])
+done
+CXXFLAGS="$saved_CXXFLAGS"
+AS_IF([test -n "$cxxmode"], [
+	regular_CXXFLAGS="$regular_CXXFLAGS -std=$cxxmode"
+	AC_MSG_RESULT([$cxxmode])
+], [
+	AC_MSG_RESULT([none])
+])
 AC_LANG_POP([C++])
 AM_CONDITIONAL([HAVE_CXX], [test "$ac_cv_cxx" = yes])
 
@@ -103,22 +124,12 @@ AC_CHECK_MEMBERS(
 	#include <sys/time.h>
 	#include <time.h>
 	])
-AC_CHECK_FUNCS([fork execv execvp pipe], [b_proc="1"])
+AC_CHECK_FUNCS([fork execv execvp pipe])
 AC_CHECK_FUNCS([getegid geteuid getpid getppid])
-AM_CONDITIONAL([B_PROC], [test "$b_proc" = 1])
-
-AC_CHECK_PROGS([LYX], [lyx])
-AM_CONDITIONAL([BUILD_DOCS], [test -n "$LYX"])
+AC_CHECK_FUNCS([initgroups setgid])
 
-regular_CPPFLAGS="-D_FILE_OFFSET_BITS=64 -D_REENTRANT"
-regular_CFLAGS="-Wall -Waggregate-return -Wmissing-declarations \
-	-Wmissing-prototypes -Wredundant-decls -Wshadow -Wstrict-prototypes \
-	-Wformat=2 -pipe $visibility_CFLAGS"
-regular_CXXFLAGS="-Wall -Wno-pointer-arith -Wredundant-decls -pipe \
-	$visibility_CFLAGS";
 AC_SUBST([regular_CPPFLAGS])
 AC_SUBST([regular_CFLAGS])
 AC_SUBST([regular_CXXFLAGS])
-AC_CONFIG_FILES([Makefile assorted/Makefile doc/Makefile src/Makefile
-	include/Makefile libHX.pc])
+AC_CONFIG_FILES([Makefile src/Makefile include/Makefile libHX.pc])
 AC_OUTPUT