From a96006d97fc87c5073f9a39db841625bdb7c401c Mon Sep 17 00:00:00 2001 From: Niklas Hambüchen Date: Wed, 3 Jul 2019 02:47:27 +0200 Subject: Get BOOST_LDFLAGS from autoconf, fix Ubuntu 16.04 build. Our use of boost::coroutine2 depends on -lboost_context, which in turn depends on `-lboost_thread`, which in turn depends on `-lboost_system`. I suspect that this builds on nix only because of low-level hacks like NIX_LDFLAGS. This commit passes the proper linker flags, thus fixing bootstrap builds on non-nix distributions like Ubuntu 16.04. With these changes, I can build Nix on Ubuntu 16.04 using: ./bootstrap.sh ./configure --prefix=$HOME/editline-prefix \ --disable-doc-gen \ CXX=g++-7 \ --with-boost=$HOME/boost-prefix \ EDITLINE_CFLAGS=-I$HOME/editline-prefix/include \ EDITLINE_LIBS=-leditline \ LDFLAGS=-L$HOME/editline-prefix/lib make where * g++-7 comes from gcc-7 from https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test, * editline 1.14 from https://github.com/troglobit/editline/releases/tag/1.14.0 was installed into `$HOME/editline-prefix` (because Ubuntu 16.04's `editline` is too old to have the function nix uses), * boost 1.66 from https://www.boost.org/doc/libs/1_66_0/more/getting_started/unix-variants.html was installed into $HOME/boost-prefix (because Ubuntu 16.04 only has 1.58) --- configure.ac | 3 +++ 1 file changed, 3 insertions(+) (limited to 'configure.ac') diff --git a/configure.ac b/configure.ac index 571bb54d8a18..a52830b3835f 100644 --- a/configure.ac +++ b/configure.ac @@ -153,6 +153,9 @@ AC_SUBST(storedir) # and CPPFLAGS are not passed to the C++ compiler automatically. # Thus we append the returned CPPFLAGS to the CXXFLAGS here. AX_BOOST_BASE([1.66], [CXXFLAGS="$BOOST_CPPFLAGS $CXXFLAGS"], [AC_MSG_ERROR([Nix requires boost.])]) +# For unknown reasons, setting this directly in the ACTION-IF-FOUND above +# ends up with LDFLAGS being empty, so we set it afterwards. +LDFLAGS="$BOOST_LDFLAGS $LDFLAGS" # Look for OpenSSL, a required dependency. -- cgit 1.4.1