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Modify gold testsuite to disable plugins added by GCC driver.

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GCC 4.8 now adds linker plugin options by default, which conflict with the
--incremental tests in the testsuite. This patch checks whether the compiler
supports the -fno-use-linker-plugin option, and adds it to all link
commands.

2014-04-02  Cary Coutant  <ccoutant@google.com>

	* configure.ac (HAVE_PUBNAMES): Use C instead of C++.
	(HAVE_NO_USE_LINKER_PLUGIN): Check for -fno-use-linker-plugin.
	* configure: Regenerate.
	* testsuite/Makefile.am (OPT_NO_PLUGINS): New macro for
	-fno-use-linker-plugin.
	(LINK1, CXXLINK1): Add it to the link command.
	* testsuite/Makefile.in: Regenerate.
This commit is contained in:
Cary Coutant
2014-04-02 15:04:36 -07:00
parent 0a899fd5ac
commit ae447ddd12
5 changed files with 102 additions and 44 deletions
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31
gold/configure.ac
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@@ -520,6 +520,25 @@ dnl multiple declarations of functions like basename when compiling
dnl with C++.
AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
dnl Check if gcc supports the -gpubnames option.
dnl Use -Werror in case of compilers that make unknown -g options warnings.
dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
dnl gets set later by default Autoconf magic to include -Werror. (We are
dnl assuming here that there is no compiler that groks -gpubnames
dnl but does not grok -Werror.)
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -gpubnames"
AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
dnl Check if gcc supports the -fno-use-linker-plugin option.
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -fno-use-linker-plugin"
AC_COMPILE_IFELSE([int i;], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(HAVE_NO_USE_LINKER_PLUGIN, test "$have_no_use_linker_plugin" = "yes")
AC_LANG_PUSH(C++)
AC_CHECK_HEADERS(unordered_set unordered_map)
@@ -601,18 +620,6 @@ if test "$gold_cv_stat_st_mtim" = "yes"; then
[Define if struct stat has a field st_mtim with timespec for mtime])
fi
dnl Check if gcc supports the -gpubnames option.
dnl Use -Werror in case of compilers that make unknown -g options warnings.
dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
dnl gets set later by default Autoconf magic to include -Werror. (We are
dnl assuming here that there is no compiler that groks -gpubnames
dnl but does not grok -Werror.)
save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -Werror -gpubnames"
AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
CXXFLAGS="$save_CXXFLAGS"
AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
AC_LANG_POP(C++)
AC_CHECK_HEADERS(locale.h)