 lttng-tools: musl compile fixes
Add two patches to address three distinct build problems spotted by our
build bots when compiling lttng-tools:
1) unconditional use of `__GLIBC_PREREQ`
On musl based toolchains there is no such macro defined, leading to the
following preprocessor error:
CC compat-epoll.lo
In file included from compat-epoll.c:33:0:
poll.h:76:19: error: missing binary operator before token "("
#if __GLIBC_PREREQ(2, 9)
2) undeclared `mode_t` type
On musl based toolchains the `mode_t` type is not implicitely defined through
other includes, leading to the following compile error:
CC hashtable.lo
In file included from ../../../src/common/common.h:24:0,
from hashtable.c:24:
../../../src/common/runas.h:25:46: error: unknown type name 'mode_t'
int run_as_mkdir_recursive(const char *path, mode_t mode, uid_t uid, gid_t gid);
^
../../../src/common/runas.h:26:36: error: unknown type name 'mode_t'
int run_as_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid);
^
../../../src/common/runas.h:27:46: error: unknown type name 'mode_t'
int run_as_open(const char *path, int flags, mode_t mode, uid_t uid, gid_t gid);
^
3) multiple definitions
The header files declare several `const char *` pointers which are initialized
in various `*.c` files later on. Due to a missing `extern` declaration in the
header, the final linking of the executables fails with errors such as:
CCLD lttng
../../../src/common/.libs/libcommon.a(mi-lttng.o):(.data.rel.ro.local+0x0): multiple definition of `mi_lttng_element_snapshots'
commands/enable_events.o:(.bss+0x18): first defined here
collect2: error: ld returned 1 exit status
This commits addresses these issues with two patches, `100-musl-compat.patch`
fixes issue 1 by declaring a fallback dummy declaration of `__GLIBC_PREREQ` and
issue 2 by explicitely including `sys/stat.h` which provides `mode_t` according
to POSIX.
The second patch, `200-use-extern.patch` declares all char pointers in the
header file as `extern`, fixing the observed linker errors.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
8 years ago |
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- #
- # Copyright (C) 2013-2015 OpenWrt.org
- #
- # This is free software, licensed under the GNU General Public License v2.
- # See /LICENSE for more information.
- #
-
- include $(TOPDIR)/rules.mk
-
- PKG_NAME:=lttng-tools
- PKG_VERSION:=2.10.6
- PKG_RELEASE:=2
-
- PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
- PKG_SOURCE_URL:=https://lttng.org/files/$(PKG_NAME)/
- PKG_HASH:=f05df52bbebf8ce88d1b29e9e98cfc957d2ed738a345118018237ebdb581537c
-
- PKG_MAINTAINER:=
- PKG_LICENSE:=LGPL-2.1 GPL-2.0
- PKG_LICENSE_FILES:=COPYING
-
- PKG_USE_MIPS16:=0
- PKG_BUILD_PARALLEL:=1
- PKG_INSTALL:=1
-
- include $(INCLUDE_DIR)/package.mk
-
- define Package/lttng-tools
- SECTION:=devel
- CATEGORY:=Development
- TITLE:=Linux Trace Toolkit: next generation (tools)
- URL:=https://lttng.org/
- DEPENDS:= +lttng-ust +libpopt +libxml2
- endef
-
- TARGET_CFLAGS += $(FPIC)
-
- CONFIGURE_ARGS += \
- --enable-epoll \
- --without-kmod \
- --without-pic
-
- define Build/InstallDev
- $(INSTALL_DIR) $(1)/usr/include
- $(CP) $(PKG_INSTALL_DIR)/usr/include/lttng $(1)/usr/include/
- $(INSTALL_DIR) $(1)/usr/lib
- $(CP) $(PKG_INSTALL_DIR)/usr/lib/liblttng-ctl*.{a,so*} $(1)/usr/lib/
- $(INSTALL_DIR) $(1)/usr/lib/pkgconfig
- $(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/lttng-ctl.pc $(1)/usr/lib/pkgconfig/
- endef
-
- define Package/lttng-tools/install
- $(INSTALL_DIR) $(1)/usr/lib
- $(CP) $(PKG_INSTALL_DIR)/usr/lib/liblttng-ctl*.so.* $(1)/usr/lib/
- $(CP) $(PKG_INSTALL_DIR)/usr/lib/lttng $(1)/usr/lib/
- $(INSTALL_DIR) $(1)/usr/bin
- $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/lttng* $(1)/usr/bin/
- endef
-
- $(eval $(call BuildPackage,lttng-tools))
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