diff options
author | Peter Kokot <peterkokot@gmail.com> | 2018-07-26 15:31:37 +0200 |
---|---|---|
committer | Peter Kokot <peterkokot@gmail.com> | 2018-07-26 15:54:20 +0200 |
commit | 27efe2db1b0988303e46bd5dda65ff9ec12de18b (patch) | |
tree | 79da0613ed4c5ea1f8bb2807f99ec6a9fad44fb1 /m4/ax_cxx_extern_template.m4 | |
parent | 72e8def2648d7d05daa95d533079e7373b7218d7 (diff) | |
download | autoconf-archive-27efe2db1b0988303e46bd5dda65ff9ec12de18b.tar.gz |
Replace AC_TRY_COMPILE and AC_LANG_
Autoconf 2.50 in 2001 made several macros obsolete. These include macros
for temporary changing the language - AC_LANG_SAVE, AC_LANG_CPLUSPLUS,
AC_LANG_C, and AC_LANG_RESTORE. Instead of these the AC_LANG_PUSH and
AC_LANG_POP macros should be used with later Autoconf versions.
AC_TRY_COMPILE macros should be replaced with AC_COMPILE_IFELSE.
Refs:
- http://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Language-Choice.html
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Obsolete-Macros.html
Diffstat (limited to 'm4/ax_cxx_extern_template.m4')
-rw-r--r-- | m4/ax_cxx_extern_template.m4 | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/m4/ax_cxx_extern_template.m4 b/m4/ax_cxx_extern_template.m4 index 5d031bf..2c45e4b 100644 --- a/m4/ax_cxx_extern_template.m4 +++ b/m4/ax_cxx_extern_template.m4 @@ -19,18 +19,17 @@ # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 7 +#serial 8 AU_ALIAS([AC_CXX_EXTERN_TEMPLATE], [AX_CXX_EXTERN_TEMPLATE]) AC_DEFUN([AX_CXX_EXTERN_TEMPLATE],[ AC_CACHE_CHECK(whether the compiler supports extern template, ax_cv_cxx_extern_template, -[AC_LANG_SAVE - AC_LANG_CPLUSPLUS - AC_TRY_COMPILE([template <typename T> void foo(T); extern template void foo<int>(int);], - [], - ax_cv_cxx_extern_template=yes, ax_cv_cxx_extern_template=no) - AC_LANG_RESTORE +[AC_LANG_PUSH([C++]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[template <typename T> void foo(T); extern template void foo<int>(int);]], + [])], + [ax_cv_cxx_extern_template=yes], [ax_cv_cxx_extern_template=no]) + AC_LANG_POP([C++]) ]) if test "$ax_cv_cxx_extern_template" = yes; then AC_DEFINE(HAVE_EXTERN_TEMPLATE,,[define if the compiler supports extern template]) |