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Diffstat (limited to 'm4/ax_compiler_flags.m4')
| -rw-r--r-- | m4/ax_compiler_flags.m4 | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/m4/ax_compiler_flags.m4 b/m4/ax_compiler_flags.m4 deleted file mode 100644 index 6cfe398..0000000 --- a/m4/ax_compiler_flags.m4 +++ /dev/null @@ -1,158 +0,0 @@ -# =========================================================================== -# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags.html -# =========================================================================== -# -# SYNOPSIS -# -# AX_COMPILER_FLAGS([CFLAGS-VARIABLE], [LDFLAGS-VARIABLE], [IS-RELEASE], [EXTRA-BASE-CFLAGS], [EXTRA-YES-CFLAGS], [UNUSED], [UNUSED], [UNUSED], [EXTRA-BASE-LDFLAGS], [EXTRA-YES-LDFLAGS], [UNUSED], [UNUSED], [UNUSED]) -# -# DESCRIPTION -# -# Check for the presence of an --enable-compile-warnings option to -# configure, defaulting to "error" in normal operation, or "yes" if -# IS-RELEASE is equal to "yes". Return the value in the variable -# $ax_enable_compile_warnings. -# -# Depending on the value of --enable-compile-warnings, different compiler -# warnings are checked to see if they work with the current compiler and, -# if so, are appended to CFLAGS-VARIABLE and LDFLAGS-VARIABLE. This -# allows a consistent set of baseline compiler warnings to be used across -# a code base, irrespective of any warnings enabled locally by individual -# developers. By standardising the warnings used by all developers of a -# project, the project can commit to a zero-warnings policy, using -Werror -# to prevent compilation if new warnings are introduced. This makes -# catching bugs which are flagged by warnings a lot easier. -# -# By providing a consistent --enable-compile-warnings argument across all -# projects using this macro, continuous integration systems can easily be -# configured the same for all projects. Automated systems or build -# systems aimed at beginners may want to pass the --disable-Werror -# argument to unconditionally prevent warnings being fatal. -# -# --enable-compile-warnings can take the values: -# -# * no: Base compiler warnings only; not even -Wall. -# * yes: The above, plus a broad range of useful warnings. -# * error: The above, plus -Werror so that all warnings are fatal. -# Use --disable-Werror to override this and disable fatal -# warnings. -# -# The set of base and enabled flags can be augmented using the -# EXTRA-*-CFLAGS and EXTRA-*-LDFLAGS variables, which are tested and -# appended to the output variable if --enable-compile-warnings is not -# "no". Flags should not be disabled using these arguments, as the entire -# point of AX_COMPILER_FLAGS is to enforce a consistent set of useful -# compiler warnings on code, using warnings which have been chosen for low -# false positive rates. If a compiler emits false positives for a -# warning, a #pragma should be used in the code to disable the warning -# locally. See: -# -# https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas -# -# The EXTRA-* variables should only be used to supply extra warning flags, -# and not general purpose compiler flags, as they are controlled by -# configure options such as --disable-Werror. -# -# IS-RELEASE can be used to disable -Werror when making a release, which -# is useful for those hairy moments when you just want to get the release -# done as quickly as possible. Set it to "yes" to disable -Werror. By -# default, it uses the value of $ax_is_release, so if you are using the -# AX_IS_RELEASE macro, there is no need to pass this parameter. For -# example: -# -# AX_IS_RELEASE([git-directory]) -# AX_COMPILER_FLAGS() -# -# CFLAGS-VARIABLE defaults to WARN_CFLAGS, and LDFLAGS-VARIABLE defaults -# to WARN_LDFLAGS. Both variables are AC_SUBST-ed by this macro, but must -# be manually added to the CFLAGS and LDFLAGS variables for each target in -# the code base. -# -# If C++ language support is enabled with AC_PROG_CXX, which must occur -# before this macro in configure.ac, warning flags for the C++ compiler -# are AC_SUBST-ed as WARN_CXXFLAGS, and must be manually added to the -# CXXFLAGS variables for each target in the code base. EXTRA-*-CFLAGS can -# be used to augment the base and enabled flags. -# -# Warning flags for g-ir-scanner (from GObject Introspection) are -# AC_SUBST-ed as WARN_SCANNERFLAGS. This variable must be manually added -# to the SCANNERFLAGS variable for each GIR target in the code base. If -# extra g-ir-scanner flags need to be enabled, the AX_COMPILER_FLAGS_GIR -# macro must be invoked manually. -# -# AX_COMPILER_FLAGS may add support for other tools in future, in addition -# to the compiler and linker. No extra EXTRA-* variables will be added -# for those tools, and all extra support will still use the single -# --enable-compile-warnings configure option. For finer grained control -# over the flags for individual tools, use AX_COMPILER_FLAGS_CFLAGS, -# AX_COMPILER_FLAGS_LDFLAGS and AX_COMPILER_FLAGS_* for new tools. -# -# The UNUSED variables date from a previous version of this macro, and are -# automatically appended to the preceding non-UNUSED variable. They should -# be left empty in new uses of the macro. -# -# LICENSE -# -# Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk> -# Copyright (c) 2015 David King <amigadave@amigadave.com> -# -# 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 13 - -# _AX_COMPILER_FLAGS_LANG([LANGNAME]) -m4_defun([_AX_COMPILER_FLAGS_LANG], -[m4_ifdef([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [], - [m4_define([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [])dnl - AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_]$1[FLAGS])])dnl -]) - -AC_DEFUN([AX_COMPILER_FLAGS],[ - # C support is enabled by default. - _AX_COMPILER_FLAGS_LANG([C]) - # Only enable C++ support if AC_PROG_CXX is called. The redefinition of - # AC_PROG_CXX is so that a fatal error is emitted if this macro is called - # before AC_PROG_CXX, which would otherwise cause no C++ warnings to be - # checked. - AC_PROVIDE_IFELSE([AC_PROG_CXX], - [_AX_COMPILER_FLAGS_LANG([CXX])], - [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[_AX_COMPILER_FLAGS_LANG([CXX])])]) - AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_LDFLAGS]) - - # Default value for IS-RELEASE is $ax_is_release - ax_compiler_flags_is_release=m4_tolower(m4_normalize(ifelse([$3],, - [$ax_is_release], - [$3]))) - - AC_ARG_ENABLE([compile-warnings], - AS_HELP_STRING([--enable-compile-warnings=@<:@no/yes/error@:>@], - [Enable compiler warnings and errors]),, - [AS_IF([test "$ax_compiler_flags_is_release" = "yes"], - [enable_compile_warnings="yes"], - [enable_compile_warnings="error"])]) - AC_ARG_ENABLE([Werror], - AS_HELP_STRING([--disable-Werror], - [Unconditionally make all compiler warnings non-fatal]),, - [enable_Werror=maybe]) - - # Return the user's chosen warning level - AS_IF([test "$enable_Werror" = "no" -a \ - "$enable_compile_warnings" = "error"],[ - enable_compile_warnings="yes" - ]) - - ax_enable_compile_warnings=$enable_compile_warnings - - AX_COMPILER_FLAGS_CFLAGS([$1],[$ax_compiler_flags_is_release], - [$4],[$5 $6 $7 $8]) - m4_ifdef([_AX_COMPILER_FLAGS_LANG_CXX_enabled], - [AX_COMPILER_FLAGS_CXXFLAGS([WARN_CXXFLAGS], - [$ax_compiler_flags_is_release], - [$4],[$5 $6 $7 $8])]) - AX_COMPILER_FLAGS_LDFLAGS([$2],[$ax_compiler_flags_is_release], - [$9],[$10 $11 $12 $13]) - AX_COMPILER_FLAGS_GIR([WARN_SCANNERFLAGS],[$ax_compiler_flags_is_release]) -])dnl AX_COMPILER_FLAGS |