[Buildroot] [PATCH v2 1/2] package/libabseil-cpp new package

aduskett at gmail.com aduskett at gmail.com
Tue Jul 21 21:45:21 UTC 2020


From: Adam Duskett <Aduskett at gmail.com>

This package is a new dependency on grpc versions > 1.25.0

Tested with the following distributions:
  - Debian 9
  - CentOS 7
  - Fedora 32

Signed-off-by: Adam Duskett <Aduskett at gmail.com>
---
Changes v1 -> v2:
  - Add a dependency on BR2_TOOLCHAIN_USES_GLIBC
  - Replace the patch that force -fPIC in favor of
    set_property(TARGET ${_NAME} PROPERTY POSITION_INDEPENDENT_CODE ON)
    (Thomas)

 DEVELOPERS                                    |  1 +
 package/Config.in                             |  1 +
 ...0001-force-position-independent-code.patch | 38 +++++++++++++++++++
 package/libabseil-cpp/Config.in               | 17 +++++++++
 package/libabseil-cpp/libabseil-cpp.hash      |  3 ++
 package/libabseil-cpp/libabseil-cpp.mk        | 24 ++++++++++++
 6 files changed, 84 insertions(+)
 create mode 100644 package/libabseil-cpp/0001-force-position-independent-code.patch
 create mode 100644 package/libabseil-cpp/Config.in
 create mode 100644 package/libabseil-cpp/libabseil-cpp.hash
 create mode 100644 package/libabseil-cpp/libabseil-cpp.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index 043e8ce3f4..f30645aaa4 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -43,6 +43,7 @@ F:	package/gstreamer1/gst1-vaapi/
 F:	package/imx-usb-loader/
 F:	package/janus-gateway/
 F:	package/json-for-modern-cpp/
+F:	package/libabseil-cpp/
 F:	package/libcpprestsdk/
 F:	package/libcutl/
 F:	package/libodb/
diff --git a/package/Config.in b/package/Config.in
index e6500123f6..03be2b0587 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -1824,6 +1824,7 @@ menu "Other"
 	source "package/gtest/Config.in"
 	source "package/jemalloc/Config.in"
 	source "package/lapack/Config.in"
+	source "package/libabseil-cpp/Config.in"
 	source "package/libargtable2/Config.in"
 	source "package/libatomic_ops/Config.in"
 	source "package/libavl/Config.in"
diff --git a/package/libabseil-cpp/0001-force-position-independent-code.patch b/package/libabseil-cpp/0001-force-position-independent-code.patch
new file mode 100644
index 0000000000..997d75597e
--- /dev/null
+++ b/package/libabseil-cpp/0001-force-position-independent-code.patch
@@ -0,0 +1,38 @@
+From d170b19e500d85381369e379771be8d7816bcc92 Mon Sep 17 00:00:00 2001
+From: Adam Duskett <Aduskett at gmail.com>
+Date: Tue, 21 Jul 2020 13:08:50 -0700
+Subject: [PATCH] force position independent code
+
+Without this option, programs building for arm64 or x86-64 will fail when
+attempting to link to the built libraries with the following (abbreviated)
+error:
+
+"relocation against `.rodata' can not be used when making a shared object;
+recompile with -fPIC."
+
+Because libabseil-cpp builds static libraries, it is better to set the
+POSITION_INDEPENDENT_CODE to ON instead of forcing fPIC, as forcing fPIC may
+cause relocation errors when shared libraries link against the built static
+libraries.
+
+Signed-off-by: Adam Duskett <Aduskett at gmail.com>
+---
+ CMake/AbseilHelpers.cmake | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/CMake/AbseilHelpers.cmake b/CMake/AbseilHelpers.cmake
+index 86ff9eb..bdb7a89 100644
+--- a/CMake/AbseilHelpers.cmake
++++ b/CMake/AbseilHelpers.cmake
+@@ -207,6 +207,8 @@ function(absl_cc_library)
+     set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD ${ABSL_CXX_STANDARD})
+     set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
+ 
++    # Without this setting, other programs such as GRPC will fail when linking.
++    set_property(TARGET ${_NAME} PROPERTY POSITION_INDEPENDENT_CODE ON)
+     # When being installed, we lose the absl_ prefix.  We want to put it back
+     # to have properly named lib files.  This is a no-op when we are not being
+     # installed.
+-- 
+2.26.2
+
diff --git a/package/libabseil-cpp/Config.in b/package/libabseil-cpp/Config.in
new file mode 100644
index 0000000000..c37506dde1
--- /dev/null
+++ b/package/libabseil-cpp/Config.in
@@ -0,0 +1,17 @@
+config BR2_PACKAGE_LIBABSEIL_CPP
+	bool "libabseil-cpp"
+	depends on BR2_TOOLCHAIN_USES_GLIBC # execinfo.h
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  Abseil is an open-source collection of C++ library code
+	  designed to augment the C++ standard library. The Abseil
+	  library code is collected from Google's own C++ code base, has
+	  been extensively tested and used in production, and is the
+	  same code we depend on in our daily coding lives.
+
+	  https://github.com/abseil/abseil-cpp
+
+comment "grpc needs a glibc toolchain w/ C++, threads"
+	depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_HAS_THREADS
diff --git a/package/libabseil-cpp/libabseil-cpp.hash b/package/libabseil-cpp/libabseil-cpp.hash
new file mode 100644
index 0000000000..7f0b5fc394
--- /dev/null
+++ b/package/libabseil-cpp/libabseil-cpp.hash
@@ -0,0 +1,3 @@
+# Locally computed
+sha256  728a813291bdec2aa46eab8356ace9f75ac2ed9dfe2df5ab603c4e6c09f1c353  libabseil-cpp-20200225.tar.gz
+sha256  c79a7fea0e3cac04cd43f20e7b648e5a0ff8fa5344e644b0ee09ca1162b62747  LICENSE
diff --git a/package/libabseil-cpp/libabseil-cpp.mk b/package/libabseil-cpp/libabseil-cpp.mk
new file mode 100644
index 0000000000..92cbb0051d
--- /dev/null
+++ b/package/libabseil-cpp/libabseil-cpp.mk
@@ -0,0 +1,24 @@
+################################################################################
+#
+# libabseil-cpp
+#
+################################################################################
+
+LIBABSEIL_CPP_VERSION = 20200225
+LIBABSEIL_CPP_SITE = $(call github,abseil,abseil-cpp,$(LIBABSEIL_CPP_VERSION))
+LIBABSEIL_CPP_LICENSE = Apache-2.0
+LIBABSEIL_CPP_LICENSE_FILES = LICENSE
+LIBABSEIL_CPP_INSTALL_STAGING = YES
+
+LIBABSEIL_CPP_CONF_OPTS = \
+	-DABSL_ENABLE_INSTALL=ON \
+	-DABSL_USE_GOOGLETEST_HEAD=OFF \
+	-DABSL_RUN_TESTS=OFF
+
+HOST_LIBABSEIL_CPP_CONF_OPTS = \
+	-DABSL_ENABLE_INSTALL=ON \
+	-DABSL_USE_GOOGLETEST_HEAD=OFF \
+	-DABSL_RUN_TESTS=OFF
+
+$(eval $(cmake-package))
+$(eval $(host-cmake-package))
-- 
2.26.2



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