From: Khem Raj <[email protected]> fixes
| ../../sources/m4-1.4.20/tests/test-float-h.c:39:5: error: use of undeclared identifier 'FLT_IS_IEC_60559' | 39 | FLT_IS_IEC_60559 /* added in ISO C 23 */ | | ^~~~~~~~~~~~~~~~ | ../../sources/m4-1.4.20/tests/test-float-h.c:60:5: error: use of undeclared identifier 'DBL_IS_IEC_60559' | 60 | DBL_IS_IEC_60559 /* added in ISO C 23 */ | | ^~~~~~~~~~~~~~~~ | ../../sources/m4-1.4.20/tests/test-float-h.c:81:5: error: use of undeclared identifier 'LDBL_IS_IEC_60559' | 81 | LDBL_IS_IEC_60559 /* added in ISO C 23 */ | | ^~~~~~~~~~~~~~~~~ | ../../sources/m4-1.4.20/tests/test-float-h.c:284:11: error: use of undeclared identifier 'FLT_IS_IEC_60559' | 284 | ASSERT (FLT_IS_IEC_60559); | | ^~~~~~~~~~~~~~~~ | ../../sources/m4-1.4.20/tests/test-float-h.c:383:11: error: use of undeclared identifier 'DBL_IS_IEC_60559' | 383 | ASSERT (DBL_IS_IEC_60559); | | ^~~~~~~~~~~~~~~~ | ../../sources/m4-1.4.20/tests/test-float-h.c:479:11: error: use of undeclared identifier 'LDBL_IS_IEC_60559' | 479 | ASSERT (LDBL_IS_IEC_60559); | | ^~~~~~~~~~~~~~~~~ | 6 errors generated. | make: *** [Makefile:8331: test-float-h.o] Error 1 Signed-off-by: Khem Raj <[email protected]> --- meta/recipes-devtools/m4/m4-1.4.21.inc | 1 + ...-fallback-definitions-for-C23-IEC-60.patch | 33 +++++++++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 meta/recipes-devtools/m4/m4/0001-test-float-h-Add-fallback-definitions-for-C23-IEC-60.patch diff --git a/meta/recipes-devtools/m4/m4-1.4.21.inc b/meta/recipes-devtools/m4/m4-1.4.21.inc index ce9fe2be8e..1af9b9a783 100644 --- a/meta/recipes-devtools/m4/m4-1.4.21.inc +++ b/meta/recipes-devtools/m4/m4-1.4.21.inc @@ -11,6 +11,7 @@ SRC_URI = "${GNU_MIRROR}/m4/m4-${PV}.tar.gz \ SRC_URI:append:class-target = " file://run-ptest \ file://0001-test-c32ispunct-Check-for-musl-along-with-glibc.patch \ file://serial-tests-config.patch \ + file://0001-test-float-h-Add-fallback-definitions-for-C23-IEC-60.patch \ " SRC_URI[sha256sum] = "38ae59f7a30bf9c108193cc5c25fbb06014f21e230c7ede2eff614f7b7c37ed8" diff --git a/meta/recipes-devtools/m4/m4/0001-test-float-h-Add-fallback-definitions-for-C23-IEC-60.patch b/meta/recipes-devtools/m4/m4/0001-test-float-h-Add-fallback-definitions-for-C23-IEC-60.patch new file mode 100644 index 0000000000..b524d94960 --- /dev/null +++ b/meta/recipes-devtools/m4/m4/0001-test-float-h-Add-fallback-definitions-for-C23-IEC-60.patch @@ -0,0 +1,33 @@ +From 0e7b8e00e0c670295340a6472f5d5a164697cdcd Mon Sep 17 00:00:00 2001 +From: Bruno Haible <[email protected]> +Date: Sun, 1 Mar 2026 19:28:29 +0100 +Subject: [PATCH] float-h: Ensure ISO C23 compliance with clang 22. + +* m4/float_h.m4 (gl_FLOAT_H): Test also whether the provided <float.h> +defines {FLT,DBL,LDBL}_IS_IEC_60559. + +Upstream-Status: Backport [https://gitweb.git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commit;h=0e7b8e00e0c670295340a6472f5d5a164697cdcd] +Signed-off-by: Khem Raj <[email protected]> + +--- + ChangeLog | 6 ++++++ + m4/float_h.m4 | 3 ++- + 2 files changed, 8 insertions(+), 1 deletion(-) + +--- a/m4/float_h.m4 ++++ b/m4/float_h.m4 +@@ -1,5 +1,5 @@ + # float_h.m4 +-# serial 16 ++# serial 17 + dnl Copyright (C) 2007, 2009-2026 Free Software Foundation, Inc. + dnl This file is free software; the Free Software Foundation + dnl gives unlimited permission to copy and/or distribute it, +@@ -63,6 +63,7 @@ changequote([,])dnl + [AC_LANG_PROGRAM( + [[#include <float.h> + int x[] = { FLT_DECIMAL_DIG, DBL_DECIMAL_DIG, LDBL_DECIMAL_DIG }; ++ int y[] = { FLT_IS_IEC_60559, DBL_IS_IEC_60559, LDBL_IS_IEC_60559 }; + float maxf = FLT_NORM_MAX; + double maxd = DBL_NORM_MAX; + long double maxl = LDBL_NORM_MAX;
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