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From: Ammar Faizi <[email protected]>
To: Jens Axboe <[email protected]>,
	Pavel Begunkov <[email protected]>,
	io-uring Mailing List <[email protected]>
Cc: Bedirhan KURT <[email protected]>,
	Louvian Lyndal <[email protected]>,
	Ammar Faizi <[email protected]>
Subject: [PATCH liburing 4/4] Add LIBURING_NOLIBC variable and edit src/Makefile
Date: Thu,  7 Oct 2021 22:02:10 +0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

Conditonal variable to enable nolibc build.

Link: https://github.com/axboe/liburing/issues/443
Signed-off-by: Ammar Faizi <[email protected]>
---
 configure    |  7 +++++++
 src/Makefile | 13 ++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 92f51bd..6bdcead 100755
--- a/configure
+++ b/configure
@@ -358,6 +358,13 @@ print_config "has_memfd_create" "$has_memfd_create"
 
 
 #############################################################################
+if test "$LIBURING_NOLIBC" = "y" -o "$LIBURING_NOLIBC" = "yes" -o "$LIBURING_NOLIBC" = "1"; then
+  output_sym "LIBURING_NOLIBC"
+  LIBURING_NOLIBC="yes"
+else
+  LIBURING_NOLIBC="no"
+fi
+print_config "LIBURING_NOLIBC" "$LIBURING_NOLIBC"
 
 if test "$__kernel_rwf_t" = "yes"; then
   output_sym "CONFIG_HAVE_KERNEL_RWF_T"
diff --git a/src/Makefile b/src/Makefile
index 5e46a9d..bc42675 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -32,11 +32,22 @@ endif
 
 all: $(all_targets)
 
-liburing_srcs := setup.c queue.c syscall.c register.c
+liburing_srcs := setup.c queue.c register.c
+
+ifeq ($(LIBURING_NOLIBC),y)
+	liburing_srcs += nolibc.c
+	override CFLAGS += -nostdlib -nolibc -nodefaultlibs -ffreestanding -fno-stack-protector -fpic
+	override CPPFLAGS += -nostdlib -nolibc -nodefaultlibs -ffreestanding -fno-stack-protector -fpic
+	override LINK_FLAGS += -nostdlib -nolibc -nodefaultlibs -fpic
+else
+	liburing_srcs += syscall.c
+endif
 
 liburing_objs := $(patsubst %.c,%.ol,$(liburing_srcs))
 liburing_sobjs := $(patsubst %.c,%.os,$(liburing_srcs))
 
+$(liburing_srcs): syscall.h lib.h
+
 $(liburing_objs) $(liburing_sobjs): include/liburing/io_uring.h
 
 %.os: %.c
-- 
2.30.2


      parent reply	other threads:[~2021-10-07 15:03 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-06 14:49 [PATCHSET v1 RFC liburing 0/6] Add no libc support for x86-64 arch Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 1/6] configure: Add LIBURING_NOLIBC variable Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 2/6] Add no libc support Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 3/6] Add x86-64 no libc build support Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 4/6] test/cq-size: Don't use `errno` to check liburing's functions Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 5/6] test/{iopoll,read-write}: Use `io_uring_free_probe()` instead of `free()` Ammar Faizi
2021-10-06 14:49 ` [PATCH v1 RFC liburing 6/6] src/{queue,register,setup}: Clean up unused includes Ammar Faizi
2021-10-06 18:47 ` [PATCHSET v1 RFC liburing 0/6] Add no libc support for x86-64 arch Jens Axboe
2021-10-06 22:20   ` Ammar Faizi
2021-10-06 22:23     ` Jens Axboe
2021-10-07  6:31       ` [PATCHSET v2 RFC liburing 0/5] " Ammar Faizi
2021-10-07  6:31         ` [PATCH v2 RFC liburing 1/5] test/{iopoll,read-write}: Use `io_uring_free_probe()` instead of `free()` Ammar Faizi
2021-10-07 12:25           ` Jens Axboe
2021-10-07  6:31         ` [PATCH v2 RFC liburing 2/5] test/cq-size: Don't use `errno` to check liburing's functions Ammar Faizi
2021-10-07 12:25           ` Jens Axboe
2021-10-07  6:31         ` [PATCH v2 RFC liburing 3/5] Add arch dependent directory and files Ammar Faizi
2021-10-07  6:31         ` [PATCH v2 RFC liburing 4/5] Add no libc build support Ammar Faizi
2021-10-07 12:27           ` Jens Axboe
2021-10-07 13:01             ` Ammar Faizi
2021-10-07  6:31         ` [PATCH v2 RFC liburing 5/5] Add LIBURING_NOLIBC variable and edit src/Makefile Ammar Faizi
2021-10-07 15:02         ` [PATCHSET liburing 0/4] Add no libc support for x86-64 arch Ammar Faizi
2021-10-07 15:02           ` [PATCH liburing 1/4] test/thread-exit: Fix use after free bug Ammar Faizi
2021-10-07 15:02           ` [PATCH liburing 2/4] Add arch dependent directory and files Ammar Faizi
2021-10-07 15:02           ` [PATCH liburing 3/4] Add no libc build support Ammar Faizi
2021-10-07 15:02           ` Ammar Faizi [this message]

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