diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/as-gcc-inline-assembly.m4 | 98 | ||||
| -rw-r--r-- | m4/ax_add_fortify_source.m4 | 53 | ||||
| -rw-r--r-- | m4/opus-intrinsics.m4 | 29 |
3 files changed, 180 insertions, 0 deletions
diff --git a/m4/as-gcc-inline-assembly.m4 b/m4/as-gcc-inline-assembly.m4 new file mode 100644 index 0000000..b0d2da4 --- /dev/null +++ b/m4/as-gcc-inline-assembly.m4 @@ -0,0 +1,98 @@ +dnl as-gcc-inline-assembly.m4 0.1.0 + +dnl autostars m4 macro for detection of gcc inline assembly + +dnl David Schleef <[email protected]> + +dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) +dnl Tries to compile with the given CFLAGS. +dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags, +dnl and ACTION-IF-NOT-ACCEPTED otherwise. + +AC_DEFUN([AS_GCC_INLINE_ASSEMBLY], +[ + AC_MSG_CHECKING([if compiler supports gcc-style inline assembly]) + + AC_TRY_COMPILE([], [ +#ifdef __GNUC_MINOR__ +#if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004 +#error GCC before 3.4 has critical bugs compiling inline assembly +#endif +#endif +__asm__ (""::) ], [flag_ok=yes], [flag_ok=no]) + + if test "X$flag_ok" = Xyes ; then + $1 + true + else + $2 + true + fi + AC_MSG_RESULT([$flag_ok]) +]) + +AC_DEFUN([AS_ASM_ARM_NEON], +[ + AC_MSG_CHECKING([if assembler supports NEON instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("vorr d0,d0,d0")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) + +AC_DEFUN([AS_ASM_ARM_NEON_FORCE], +[ + AC_MSG_CHECKING([if assembler supports NEON instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) + +AC_DEFUN([AS_ASM_ARM_MEDIA], +[ + AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("shadd8 r3,r3,r3")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) + +AC_DEFUN([AS_ASM_ARM_MEDIA_FORCE], +[ + AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) + +AC_DEFUN([AS_ASM_ARM_EDSP], +[ + AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("qadd r3,r3,r3")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) + +AC_DEFUN([AS_ASM_ARM_EDSP_FORCE], +[ + AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3")])], + [AC_MSG_RESULT([yes]) + $1], + [AC_MSG_RESULT([no]) + $2]) +]) diff --git a/m4/ax_add_fortify_source.m4 b/m4/ax_add_fortify_source.m4 new file mode 100644 index 0000000..1c89e41 --- /dev/null +++ b/m4/ax_add_fortify_source.m4 @@ -0,0 +1,53 @@ +# =========================================================================== +# Modified from https://www.gnu.org/software/autoconf-archive/ax_add_fortify_source.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_ADD_FORTIFY_SOURCE +# +# DESCRIPTION +# +# Check whether -D_FORTIFY_SOURCE=2 can be added to CFLAGS without macro +# redefinition warnings. Some distributions (such as Gentoo Linux) enable +# _FORTIFY_SOURCE globally in their compilers, leading to unnecessary +# warnings in the form of +# +# <command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror] +# <built-in>: note: this is the location of the previous definition +# +# which is a problem if -Werror is enabled. This macro checks whether +# _FORTIFY_SOURCE is already defined, and if not, adds -D_FORTIFY_SOURCE=2 +# to CFLAGS. +# +# LICENSE +# +# Copyright (c) 2017 David Seifert <[email protected]> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 1 + +AC_DEFUN([AX_ADD_FORTIFY_SOURCE],[ + AC_MSG_CHECKING([whether to add -D_FORTIFY_SOURCE=2 to CFLAGS]) + AC_LINK_IFELSE([ + AC_LANG_SOURCE( + [[ + int main() { + #ifndef _FORTIFY_SOURCE + return 0; + #else + this_is_an_error; + #endif + } + ]] + )], [ + AC_MSG_RESULT([yes]) + CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2" + ], [ + AC_MSG_RESULT([no]) + ]) +]) diff --git a/m4/opus-intrinsics.m4 b/m4/opus-intrinsics.m4 new file mode 100644 index 0000000..a262ca1 --- /dev/null +++ b/m4/opus-intrinsics.m4 @@ -0,0 +1,29 @@ +dnl opus-intrinsics.m4 +dnl macro for testing for support for compiler intrinsics, either by default or with a compiler flag + +dnl OPUS_CHECK_INTRINSICS(NAME-OF-INTRINSICS, COMPILER-FLAG-FOR-INTRINSICS, VAR-IF-PRESENT, VAR-IF-DEFAULT, TEST-PROGRAM-HEADER, TEST-PROGRAM-BODY) +AC_DEFUN([OPUS_CHECK_INTRINSICS], +[ + AC_MSG_CHECKING([if compiler supports $1 intrinsics]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM($5, $6)], + [ + $3=1 + $4=1 + AC_MSG_RESULT([yes]) + ],[ + $4=0 + AC_MSG_RESULT([no]) + AC_MSG_CHECKING([if compiler supports $1 intrinsics with $2]) + save_CFLAGS="$CFLAGS"; CFLAGS="$CFLAGS $2" + AC_LINK_IFELSE([AC_LANG_PROGRAM($5, $6)], + [ + AC_MSG_RESULT([yes]) + $3=1 + ],[ + AC_MSG_RESULT([no]) + $3=0 + ]) + CFLAGS="$save_CFLAGS" + ]) +]) |