On Thu, Nov 17, 2022 at 10:04 PM Bernhard Reutner-Fischer via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > --- > ceb17928e5d1d5 copied (parts of) the valgrind annotation checks from gcc > to libcpp. The above copies the missing pieces to libcpp to diagnose > when libcpp is configured with --enable-valgrind-annotations but > valgrind is not installed. > > Tested with --enable-valgrind-annotations without valgrind installed > where it fixes errors thrown by test(1). And once with valgrind > installed. > Ok for trunk?
OK. > libcpp/ChangeLog: > > PR preprocessor/107691 > * configure.ac: Add valgrind header checks. > * configure: Regenerate. > --- > libcpp/configure.ac | 35 +++++++++++++++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > > diff --git a/libcpp/configure.ac b/libcpp/configure.ac > index 9b6042518e5..89ac99b04bd 100644 > --- a/libcpp/configure.ac > +++ b/libcpp/configure.ac > @@ -226,6 +226,40 @@ case x$enable_languages in > esac > AC_SUBST(CET_HOST_FLAGS) > > +dnl # This check AC_REQUIREs various stuff, so it *must not* be inside > +dnl # an if statement. This was the source of very frustrating bugs > +dnl # in converting to autoconf 2.5x! > +AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) > + > +# It is certainly possible that there's valgrind but no valgrind.h. > +# GCC relies on making annotations so we must have both. > +AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) > +AC_PREPROC_IFELSE([AC_LANG_SOURCE( > + [[#include <valgrind/memcheck.h> > +#ifndef VALGRIND_DISCARD > +#error VALGRIND_DISCARD not defined > +#endif]])], > + [gcc_cv_header_valgrind_memcheck_h=yes], > + [gcc_cv_header_valgrind_memcheck_h=no]) > +AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) > +AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) > +AC_PREPROC_IFELSE([AC_LANG_SOURCE( > + [[#include <memcheck.h> > +#ifndef VALGRIND_DISCARD > +#error VALGRIND_DISCARD not defined > +#endif]])], > + [gcc_cv_header_memcheck_h=yes], > + [gcc_cv_header_memcheck_h=no]) > +AC_MSG_RESULT($gcc_cv_header_memcheck_h) > +if test $gcc_cv_header_valgrind_memcheck_h = yes; then > + AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, > + [Define if valgrind's valgrind/memcheck.h header is installed.]) > +fi > +if test $gcc_cv_header_memcheck_h = yes; then > + AC_DEFINE(HAVE_MEMCHECK_H, 1, > + [Define if valgrind's memcheck.h header is installed.]) > +fi > + > AC_ARG_ENABLE(valgrind-annotations, > [AS_HELP_STRING([--enable-valgrind-annotations], > [enable valgrind runtime interaction])], [], > @@ -235,6 +269,7 @@ if test x$enable_valgrind_annotations != xno \ > if (test $have_valgrind_h = no \ > && test $gcc_cv_header_memcheck_h = no \ > && test $gcc_cv_header_valgrind_memcheck_h = no); then > + AC_MSG_ERROR([*** valgrind annotations requested, but]) > AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or > valgrind.h]) > fi > AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1, > -- > 2.38.1 >
