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Diffstat (limited to 'm4.include/ax_append_compile_flags.m4')
| -rw-r--r-- | m4.include/ax_append_compile_flags.m4 | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/m4.include/ax_append_compile_flags.m4 b/m4.include/ax_append_compile_flags.m4 new file mode 100644 index 0000000..9c85635 --- /dev/null +++ b/m4.include/ax_append_compile_flags.m4 @@ -0,0 +1,46 @@ +# ============================================================================ +# https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html +# ============================================================================ +# +# SYNOPSIS +# +# AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# For every FLAG1, FLAG2 it is checked whether the compiler works with the +# flag. If it does, the flag is added FLAGS-VARIABLE +# +# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. +# CFLAGS) is used. During the check the flag is always added to the +# current language's flags. +# +# If EXTRA-FLAGS is defined, it is added to the current language's default +# flags (e.g. CFLAGS) when the check is done. The check is thus made with +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to +# force the compiler to issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. +# +# NOTE: This macro depends on the AX_APPEND_FLAG and +# AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with +# AX_APPEND_LINK_FLAGS. +# +# LICENSE +# +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.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 7 + +AC_DEFUN([AX_APPEND_COMPILE_FLAGS], +[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) +AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) +for flag in $1; do + AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4]) +done +])dnl AX_APPEND_COMPILE_FLAGS |