diff options
Diffstat (limited to 'dev-build/autoconf/files/autoconf-2.71-K-R-decls-clang.patch')
| -rw-r--r-- | dev-build/autoconf/files/autoconf-2.71-K-R-decls-clang.patch | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/dev-build/autoconf/files/autoconf-2.71-K-R-decls-clang.patch b/dev-build/autoconf/files/autoconf-2.71-K-R-decls-clang.patch new file mode 100644 index 000000000000..e2e451e86920 --- /dev/null +++ b/dev-build/autoconf/files/autoconf-2.71-K-R-decls-clang.patch @@ -0,0 +1,114 @@ +https://bugs.gentoo.org/870412 +https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=8b5e2016c7ed2d67f31b03a3d2e361858ff5299b + +Backport the K&R decls fix to 2.71 to avoid configure tests +failing (often "silently", i.e. doesn't fail the build of +the package overall, just leads to wrong results) with +newer compilers like the upcoming Clang 16. + +From 8b5e2016c7ed2d67f31b03a3d2e361858ff5299b Mon Sep 17 00:00:00 2001 +From: Paul Eggert <eggert@cs.ucla.edu> +Date: Thu, 1 Sep 2022 16:19:50 -0500 +Subject: Port to compilers that moan about K&R func decls +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +* lib/autoconf/c.m4 (AC_LANG_CALL, AC_LANG_FUNC_LINK_TRY): +Use '(void)' rather than '()' in function prototypes, as the latter +provokes fatal errors in some compilers nowadays. +* lib/autoconf/functions.m4 (AC_FUNC_STRTOD): +* tests/fortran.at (AC_F77_DUMMY_MAIN usage): +* tests/semantics.at (AC_CHECK_DECLS): +Don’t use () in a function decl. +--- a/lib/autoconf/c.m4 ++++ b/lib/autoconf/c.m4 +@@ -133,7 +133,7 @@ m4_if([$2], [main], , + #ifdef __cplusplus + extern "C" + #endif +-char $2 ();])], [return $2 ();])]) ++char $2 (void);])], [return $2 ();])]) + + + # AC_LANG_FUNC_LINK_TRY(C)(FUNCTION) +@@ -157,7 +157,7 @@ m4_define([AC_LANG_FUNC_LINK_TRY(C)], + #define $1 innocuous_$1 + + /* System header to define __stub macros and hopefully few prototypes, +- which can conflict with char $1 (); below. */ ++ which can conflict with char $1 (void); below. */ + + #include <limits.h> + #undef $1 +@@ -168,7 +168,7 @@ m4_define([AC_LANG_FUNC_LINK_TRY(C)], + #ifdef __cplusplus + extern "C" + #endif +-char $1 (); ++char $1 (void); + /* The GNU C library defines this for functions which it implements + to always fail with ENOSYS. Some functions are actually named + something starting with __ and the normal name is an alias. */ +--- a/lib/autoconf/functions.m4 ++++ b/lib/autoconf/functions.m4 +@@ -1613,9 +1613,6 @@ AC_DEFUN([AC_FUNC_STRTOD], + AC_CACHE_CHECK(for working strtod, ac_cv_func_strtod, + [AC_RUN_IFELSE([AC_LANG_SOURCE([[ + ]AC_INCLUDES_DEFAULT[ +-#ifndef strtod +-double strtod (); +-#endif + int + main (void) + { +--- a/tests/fortran.at ++++ b/tests/fortran.at +@@ -233,7 +233,7 @@ void FOOBAR_F77 (double *x, double *y); + # ifdef __cplusplus + extern "C" + # endif +- int F77_DUMMY_MAIN () { return 1; } ++ int F77_DUMMY_MAIN (void) { return 1; } + #endif + + int main(int argc, char *argv[]) +@@ -315,7 +315,7 @@ void FOOBAR_FC(double *x, double *y); + # ifdef __cplusplus + extern "C" + # endif +- int FC_DUMMY_MAIN () { return 1; } ++ int FC_DUMMY_MAIN (void) { return 1; } + #endif + + int main (int argc, char *argv[]) +@@ -561,7 +561,7 @@ void @foobar@ (int *x); + # ifdef __cplusplus + extern "C" + # endif +- int F77_DUMMY_MAIN () { return 1; } ++ int F77_DUMMY_MAIN (void) { return 1; } + #endif + + int main(int argc, char *argv[]) +@@ -637,7 +637,7 @@ void @foobar@ (int *x); + # ifdef __cplusplus + extern "C" + # endif +- int FC_DUMMY_MAIN () { return 1; } ++ int FC_DUMMY_MAIN (void) { return 1; } + #endif + + int main(int argc, char *argv[]) +--- a/tests/semantics.at ++++ b/tests/semantics.at +@@ -207,7 +207,7 @@ AT_CHECK_MACRO([AC_CHECK_DECLS], + [[extern int yes; + enum { myenum }; + extern struct mystruct_s { int x[20]; } mystruct; +- extern int myfunc(); ++ extern int myfunc (int); + #define mymacro1(arg) arg + #define mymacro2]]) + # Ensure we can detect missing declarations of functions whose +cgit v1.1 |