X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=m4%2Fax_compiler_flags_cflags.m4;fp=m4%2Fax_compiler_flags_cflags.m4;h=0000000000000000000000000000000000000000;hp=916f9183705f83bf9d68011d01beff095e54c922;hb=28ba44ad9ca14153e96c94a9100423ea224c1af3;hpb=28c8edae95b13ad909094fdc6ebc44ab4e10018a diff --git a/m4/ax_compiler_flags_cflags.m4 b/m4/ax_compiler_flags_cflags.m4 deleted file mode 100644 index 916f9183..00000000 --- a/m4/ax_compiler_flags_cflags.m4 +++ /dev/null @@ -1,161 +0,0 @@ -# ============================================================================= -# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_cflags.html -# ============================================================================= -# -# SYNOPSIS -# -# AX_COMPILER_FLAGS_CFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) -# -# DESCRIPTION -# -# Add warning flags for the C compiler to VARIABLE, which defaults to -# WARN_CFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be -# manually added to the CFLAGS 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 -# Copyright (c) 2017, 2018 Reini Urban -# -# 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 17 - -AC_DEFUN([AX_COMPILER_FLAGS_CFLAGS],[ - AC_REQUIRE([AC_PROG_SED]) - AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS]) - AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) - AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) - - # Variable names - m4_define([ax_warn_cflags_variable], - [m4_normalize(ifelse([$1],,[WARN_CFLAGS],[$1]))]) - - AC_LANG_PUSH([C]) - - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ - [#ifndef __cplusplus - #error "no C++" - #endif]])], - [ax_compiler_cxx=yes;], - [ax_compiler_cxx=no;]) - - # Always pass -Werror=unknown-warning-option to get Clang to fail on bad - # flags, otherwise they are always appended to the warn_cflags 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="" - ]) - - # Check that -Wno-suggest-attribute=format is supported - AX_CHECK_COMPILE_FLAG([-Wno-suggest-attribute=format],[ - ax_compiler_no_suggest_attribute_flags="-Wno-suggest-attribute=format" - ],[ - ax_compiler_no_suggest_attribute_flags="" - ]) - - # Base flags - AX_APPEND_COMPILE_FLAGS([ dnl - -fno-strict-aliasing dnl - $3 dnl - ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) - - AS_IF([test "$ax_enable_compile_warnings" != "no"],[ - if test "$ax_compiler_cxx" = "no" ; then - # C-only flags. Warn in C++ - AX_APPEND_COMPILE_FLAGS([ dnl - -Wnested-externs dnl - -Wmissing-prototypes dnl - -Wstrict-prototypes dnl - -Wdeclaration-after-statement dnl - -Wimplicit-function-declaration dnl - -Wold-style-definition dnl - -Wjump-misses-init dnl - ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) - fi - - # "yes" flags - AX_APPEND_COMPILE_FLAGS([ dnl - -Wall dnl - -Wextra dnl - -Wundef dnl - -Wwrite-strings dnl - -Wpointer-arith dnl - -Wmissing-declarations dnl - -Wredundant-decls dnl - -Wno-unused-parameter dnl - -Wno-missing-field-initializers dnl - -Wformat=2 dnl - -Wcast-align dnl - -Wformat-nonliteral dnl - -Wformat-security dnl - -Wsign-compare dnl - -Wstrict-aliasing dnl - -Wshadow dnl - -Winline dnl - -Wpacked dnl - -Wmissing-format-attribute dnl - -Wmissing-noreturn dnl - -Winit-self dnl - -Wredundant-decls dnl - -Wmissing-include-dirs dnl - -Wunused-but-set-variable dnl - -Warray-bounds dnl - -Wreturn-type dnl - -Wswitch-enum dnl - -Wswitch-default dnl - -Wduplicated-cond dnl - -Wduplicated-branches dnl - -Wlogical-op dnl - -Wrestrict dnl - -Wnull-dereference dnl - -Wdouble-promotion dnl - $4 dnl - $5 dnl - $6 dnl - $7 dnl - ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) - ]) - AS_IF([test "$ax_enable_compile_warnings" = "error"],[ - # "error" flags; -Werror has to be appended unconditionally because - # it's not possible to test for - # - # suggest-attribute=format is disabled because it gives too many false - # positives - AX_APPEND_FLAG([-Werror],ax_warn_cflags_variable) - - AX_APPEND_COMPILE_FLAGS([ dnl - [$ax_compiler_no_suggest_attribute_flags] dnl - ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) - ]) - - # In the flags below, when disabling specific flags, always add *both* - # -Wno-foo and -Wno-error=foo. This fixes the situation where (for example) - # we enable -Werror, disable a flag, and a build bot passes CFLAGS=-Wall, - # which effectively turns that flag back on again as an error. - for flag in $ax_warn_cflags_variable; do - AS_CASE([$flag], - [-Wno-*=*],[], - [-Wno-*],[ - AX_APPEND_COMPILE_FLAGS([-Wno-error=$(AS_ECHO([$flag]) | $SED 's/^-Wno-//')], - ax_warn_cflags_variable, - [$ax_compiler_flags_test]) - ]) - done - - AC_LANG_POP([C]) - - # Substitute the variables - AC_SUBST(ax_warn_cflags_variable) -])dnl AX_COMPILER_FLAGS