84 lines
3 KiB
Diff
84 lines
3 KiB
Diff
From ce22a6e1b6cde3237a733b9fb04c113de429b3a9 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?S=C3=B6ren=20Tempel?= <soeren+git@soeren-tempel.net>
|
|
Date: Sun, 28 Nov 2021 00:54:37 +0100
|
|
Subject: [PATCH] libgo: Recognize off64_t and loff_t definitions of musl libc
|
|
|
|
Without this patch, both off64_t and loff_t are not recognized by
|
|
-fdump-go-spec which causes a variety Go-related compilation errors on
|
|
musl libc since the gcc-go frontend expects both off64_t and loff_t to
|
|
be present.
|
|
|
|
Also make sure that autoconf recognizes support for loff_t on musl, by
|
|
compiling the relevant feature test code with -D_GNU_SOURCE and making
|
|
it include fcntl.h which defines loff_t on musl.
|
|
---
|
|
libgo/configure | 4 +++-
|
|
libgo/configure.ac | 4 +++-
|
|
libgo/sysinfo.c | 21 +++++++++++++++++++++
|
|
3 files changed, 27 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/libgo/configure b/libgo/configure
|
|
index 70f64c974fd..69d15839e8c 100755
|
|
--- a/libgo/configure
|
|
+++ b/libgo/configure
|
|
@@ -15546,7 +15546,9 @@ _ACEOF
|
|
|
|
fi
|
|
|
|
-ac_fn_c_check_type "$LINENO" "loff_t" "ac_cv_type_loff_t" "$ac_includes_default"
|
|
+CFLAGS_hold=$CFLAGS
|
|
+CFLAGS="$CFLAGS -D_GNU_SOURCE"
|
|
+ac_fn_c_check_type "$LINENO" "loff_t" "ac_cv_type_loff_t" "#include <fcntl.h>"
|
|
if test "x$ac_cv_type_loff_t" = xyes; then :
|
|
|
|
cat >>confdefs.h <<_ACEOF
|
|
diff --git a/libgo/configure.ac b/libgo/configure.ac
|
|
index ebab9d9de3e..a3d9d309aba 100644
|
|
--- a/libgo/configure.ac
|
|
+++ b/libgo/configure.ac
|
|
@@ -602,7 +602,9 @@ AC_STRUCT_DIRENT_D_TYPE
|
|
|
|
AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice syscall tee unlinkat unshare utimensat)
|
|
AC_TYPE_OFF_T
|
|
-AC_CHECK_TYPES([loff_t])
|
|
+CFLAGS_hold=$CFLAGS
|
|
+CFLAGS="$CFLAGS -D_GNU_SOURCE" # musl does not define loff_t without this
|
|
+AC_CHECK_TYPES([loff_t], [], [], [[#include <fcntl.h>]])
|
|
|
|
LIBS_hold="$LIBS"
|
|
LIBS="$LIBS -lm"
|
|
diff --git a/libgo/sysinfo.c b/libgo/sysinfo.c
|
|
index 8ce061e2f5f..b85add15a7b 100644
|
|
--- a/libgo/sysinfo.c
|
|
+++ b/libgo/sysinfo.c
|
|
@@ -343,6 +343,27 @@ enum {
|
|
#endif
|
|
};
|
|
|
|
+// musl libc has both off64_t and loff_t. However, both of these types
|
|
+// are defined as CPP macros, not as C typedefs. Unfortunately, the GCC
|
|
+// -fdump-go-spec option, which is responsible for generating type
|
|
+// definitions for Go based on this file, only recognizes types defined
|
|
+// through typedefs.
|
|
+//
|
|
+// For this reason, we check here if either off64_t or loff_t are
|
|
+// defined as CPP macros and if so, we redefine them using a C typedef.
|
|
+#if defined(HAVE_OFF64_T) && defined(off64_t)
|
|
+typedef off64_t __musl_off64_t;
|
|
+#undef off64_t
|
|
+typedef __musl_off64_t off64_t;
|
|
+#endif
|
|
+
|
|
+// See comment regarding musl libc above.
|
|
+#if defined(HAVE_LOFF_T) && defined(loff_t)
|
|
+typedef loff_t __musl_loff_t;
|
|
+#undef loff_t
|
|
+typedef __musl_loff_t loff_t;
|
|
+#endif
|
|
+
|
|
// SIOCGIFMTU can't be added in the above enum as it might
|
|
// be signed in some OSes.
|
|
#ifdef SIOCGIFMTU
|
|
--
|
|
2.34.1
|
|
|