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build: add caching for involved configure checks

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* configure.ac: Wrap the following with AC_CACHE_VAL,
so that they can be cached / overridden.  We use
the "utils_cv_" prefix as they're coreutils specific overrides.
utils_cv_avx2_intrinsic_exists,
utils_cv_brain_16_bit_supported,
utils_cv_ieee_16_bit_supported,
utils_cv_pclmul_intrinsic_exists,
utils_cv_stdbuf_supported.
This commit is contained in:
Pádraig Brady 2024-03-13 12:31:32 +00:00
parent 0cafa1524f
commit c7f422940a
1 changed files with 31 additions and 26 deletions
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57
configure.ac
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@ -544,7 +544,8 @@ gl_WARN_ADD([-errwarn], [CFLAGS])
AC_MSG_CHECKING([whether this system supports stdbuf])
CFLAGS="-fPIC $CFLAGS"
LDFLAGS="-shared $LDFLAGS"
stdbuf_supported=no
AC_CACHE_VAL([utils_cv_stdbuf_supported],[
utils_cv_stdbuf_supported=no
# Note we only LINK here rather than RUN to support cross compilation
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
@ -558,9 +559,9 @@ AC_LINK_IFELSE(
if (stdbuf != 1)
return 1;]])
],
[stdbuf_supported=yes])
AC_MSG_RESULT([$stdbuf_supported])
if test "$stdbuf_supported" = "yes" && test -z "$EXEEXT"; then
[utils_cv_stdbuf_supported=yes])])
AC_MSG_RESULT([$utils_cv_stdbuf_supported])
if test "$utils_cv_stdbuf_supported" = "yes" && test -z "$EXEEXT"; then
gl_ADD_PROG([optional_bin_progs], [stdbuf])
fi
CFLAGS=$ac_save_CFLAGS
@ -569,6 +570,7 @@ ac_c_werror_flag=$cu_save_c_werror_flag
# Test compiler support for half precision floating point types (for od)
AC_MSG_CHECKING([IEEE 16 bit floating point])
AC_CACHE_VAL([utils_cv_ieee_16_bit_supported],[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
int
@ -580,16 +582,17 @@ AC_MSG_CHECKING([IEEE 16 bit floating point])
}
]])
],[
ieee_16_bit_supported=yes
utils_cv_ieee_16_bit_supported=yes
],[
ieee_16_bit_supported=no
])
AC_MSG_RESULT([$ieee_16_bit_supported])
if test $ieee_16_bit_supported = yes; then
utils_cv_ieee_16_bit_supported=no
])])
AC_MSG_RESULT([$utils_cv_ieee_16_bit_supported])
if test $utils_cv_ieee_16_bit_supported = yes; then
AC_DEFINE([FLOAT16_SUPPORTED], [1], [IEEE 16 bit float supported])
fi
AC_MSG_CHECKING([Brain 16 bit floating point])
AC_CACHE_VAL([utils_cv_brain_16_bit_supported],[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
int
@ -601,18 +604,19 @@ AC_MSG_CHECKING([Brain 16 bit floating point])
}
]])
],[
brain_16_bit_supported=yes
utils_cv_brain_16_bit_supported=yes
],[
brain_16_bit_supported=no
])
AC_MSG_RESULT([$brain_16_bit_supported])
if test $brain_16_bit_supported = yes; then
utils_cv_brain_16_bit_supported=no
])])
AC_MSG_RESULT([$utils_cv_brain_16_bit_supported])
if test $utils_cv_brain_16_bit_supported = yes; then
AC_DEFINE([BF16_SUPPORTED], [1], [Brain 16 bit float supported])
fi
ac_save_CFLAGS=$CFLAGS
CFLAGS="-mavx -mpclmul $CFLAGS"
AC_MSG_CHECKING([if pclmul intrinsic exists])
AC_CACHE_VAL([utils_cv_pclmul_intrinsic_exists],[
AC_LINK_IFELSE(
[AC_LANG_SOURCE([[
#include <x86intrin.h>
@ -627,21 +631,22 @@ AC_LINK_IFELSE(
}
]])
],[
pclmul_intrinsic_exists=yes
utils_cv_pclmul_intrinsic_exists=yes
],[
pclmul_intrinsic_exists=no
])
AC_MSG_RESULT([$pclmul_intrinsic_exists])
if test $pclmul_intrinsic_exists = yes; then
utils_cv_pclmul_intrinsic_exists=no
])])
AC_MSG_RESULT([$utils_cv_pclmul_intrinsic_exists])
if test $utils_cv_pclmul_intrinsic_exists = yes; then
AC_DEFINE([USE_PCLMUL_CRC32], [1],
[CRC32 calculation by pclmul hardware instruction enabled])
fi
AM_CONDITIONAL([USE_PCLMUL_CRC32],
[test $pclmul_intrinsic_exists = yes])
[test $utils_cv_pclmul_intrinsic_exists = yes])
CFLAGS=$ac_save_CFLAGS
CFLAGS="-mavx2 $CFLAGS"
AC_MSG_CHECKING([for avx2 intrinsics])
AC_CACHE_VAL([utils_cv_avx2_intrinsic_exists],[
AC_LINK_IFELSE(
[AC_LANG_SOURCE([[
#include <x86intrin.h>
@ -655,16 +660,16 @@ AC_LINK_IFELSE(
}
]])
],[
avx2_intrinsic_exists=yes
utils_cv_avx2_intrinsic_exists=yes
],[
avx2_intrinsic_exists=no
])
AC_MSG_RESULT([$avx2_intrinsic_exists])
if test $avx2_intrinsic_exists = yes; then
utils_cv_avx2_intrinsic_exists=no
])])
AC_MSG_RESULT([$utils_cv_avx2_intrinsic_exists])
if test $utils_cv_avx2_intrinsic_exists = yes; then
AC_DEFINE([USE_AVX2_WC_LINECOUNT], [1], [Counting lines with AVX2 enabled])
fi
AM_CONDITIONAL([USE_AVX2_WC_LINECOUNT],
[test $avx2_intrinsic_exists = yes])
[test $utils_cv_avx2_intrinsic_exists = yes])
CFLAGS=$ac_save_CFLAGS