diff options
Diffstat (limited to 'm4/ax_compiler_flags_ldflags.m4')
| -rw-r--r-- | m4/ax_compiler_flags_ldflags.m4 | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/m4/ax_compiler_flags_ldflags.m4 b/m4/ax_compiler_flags_ldflags.m4 deleted file mode 100644 index 976d119..0000000 --- a/m4/ax_compiler_flags_ldflags.m4 +++ /dev/null @@ -1,111 +0,0 @@ -# ============================================================================== -# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_ldflags.html -# ============================================================================== -# -# SYNOPSIS -# -# AX_COMPILER_FLAGS_LDFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) -# -# DESCRIPTION -# -# Add warning flags for the linker to VARIABLE, which defaults to -# WARN_LDFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be -# manually added to the LDFLAGS variable for each target in the code base. -# -# This macro depends on the environment set up by AX_COMPILER_FLAGS. -# Specifically, it uses the value of $ax_enable_compile_warnings to decide -# which flags to enable. -# -# LICENSE -# -# Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk> -# Copyright (c) 2017, 2018 Reini Urban <rurban@cpan.org> -# -# Copying and distribution of this file, with or without modification, are -# permitted in any medium without royalty provided the copyright notice -# and this notice are preserved. This file is offered as-is, without any -# warranty. - -#serial 9 - -AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[ - AX_REQUIRE_DEFINED([AX_APPEND_LINK_FLAGS]) - AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) - AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) - AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) - - # Variable names - m4_define([ax_warn_ldflags_variable], - [m4_normalize(ifelse([$1],,[WARN_LDFLAGS],[$1]))]) - - # Always pass -Werror=unknown-warning-option to get Clang to fail on bad - # flags, otherwise they are always appended to the warn_ldflags variable, - # and Clang warns on them for every compilation unit. - # If this is passed to GCC, it will explode, so the flag must be enabled - # conditionally. - AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[ - ax_compiler_flags_test="-Werror=unknown-warning-option" - ],[ - ax_compiler_flags_test="" - ]) - - AX_CHECK_LINK_FLAG([-Wl,--as-needed], [ - AX_APPEND_LINK_FLAGS([-Wl,--as-needed], - [AM_LDFLAGS],[$ax_compiler_flags_test]) - ]) - AX_CHECK_LINK_FLAG([-Wl,-z,relro], [ - AX_APPEND_LINK_FLAGS([-Wl,-z,relro], - [AM_LDFLAGS],[$ax_compiler_flags_test]) - ]) - AX_CHECK_LINK_FLAG([-Wl,-z,now], [ - AX_APPEND_LINK_FLAGS([-Wl,-z,now], - [AM_LDFLAGS],[$ax_compiler_flags_test]) - ]) - AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [ - AX_APPEND_LINK_FLAGS([-Wl,-z,noexecstack], - [AM_LDFLAGS],[$ax_compiler_flags_test]) - ]) - # textonly, retpolineplt not yet - - # macOS and cygwin linker do not have --as-needed - AX_CHECK_LINK_FLAG([-Wl,--no-as-needed], [ - ax_compiler_flags_as_needed_option="-Wl,--no-as-needed" - ], [ - ax_compiler_flags_as_needed_option="" - ]) - - # macOS linker speaks with a different accent - ax_compiler_flags_fatal_warnings_option="" - AX_CHECK_LINK_FLAG([-Wl,--fatal-warnings], [ - ax_compiler_flags_fatal_warnings_option="-Wl,--fatal-warnings" - ]) - AX_CHECK_LINK_FLAG([-Wl,-fatal_warnings], [ - ax_compiler_flags_fatal_warnings_option="-Wl,-fatal_warnings" - ]) - - # Base flags - AX_APPEND_LINK_FLAGS([ dnl - $ax_compiler_flags_as_needed_option dnl - $3 dnl - ],ax_warn_ldflags_variable,[$ax_compiler_flags_test]) - - AS_IF([test "$ax_enable_compile_warnings" != "no"],[ - # "yes" flags - AX_APPEND_LINK_FLAGS([$4 $5 $6 $7], - ax_warn_ldflags_variable, - [$ax_compiler_flags_test]) - ]) - AS_IF([test "$ax_enable_compile_warnings" = "error"],[ - # "error" flags; -Werror has to be appended unconditionally because - # it's not possible to test for - # - # suggest-attribute=format is disabled because it gives too many false - # positives - AX_APPEND_LINK_FLAGS([ dnl - $ax_compiler_flags_fatal_warnings_option dnl - ],ax_warn_ldflags_variable,[$ax_compiler_flags_test]) - ]) - - # Substitute the variables - AC_SUBST(ax_warn_ldflags_variable) -])dnl AX_COMPILER_FLAGS |