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Get BOOST_LDFLAGS from autoconf, fix Ubuntu 16.04 build.

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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)
This commit is contained in:
Niklas Hambüchen 2019-07-03 02:47:27 +02:00
parent d203c554fa
commit a96006d97f
4 changed files with 6 additions and 2 deletions
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1
Makefile.config.in
View file

@ -9,6 +9,7 @@ LDFLAGS = @LDFLAGS@
ENABLE_S3 = @ENABLE_S3@
HAVE_SODIUM = @HAVE_SODIUM@
HAVE_SECCOMP = @HAVE_SECCOMP@
BOOST_LDFLAGS = @BOOST_LDFLAGS@
LIBCURL_LIBS = @LIBCURL_LIBS@
OPENSSL_LIBS = @OPENSSL_LIBS@
PACKAGE_NAME = @PACKAGE_NAME@

3
configure.ac
View file

@ -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.

2
src/libutil/local.mk
View file

@ -6,4 +6,4 @@ libutil_DIR := $(d)
libutil_SOURCES := $(wildcard $(d)/*.cc)
libutil_LDFLAGS = $(LIBLZMA_LIBS) -lbz2 -pthread $(OPENSSL_LIBS) $(LIBBROTLI_LIBS) -lboost_context
libutil_LDFLAGS = $(LIBLZMA_LIBS) -lbz2 -pthread $(OPENSSL_LIBS) $(LIBBROTLI_LIBS) $(BOOST_LDFLAGS) -lboost_context

2
src/nix/local.mk
View file

@ -17,7 +17,7 @@ nix_SOURCES := \
nix_LIBS = libexpr libmain libstore libutil
nix_LDFLAGS = -pthread $(SODIUM_LIBS) $(EDITLINE_LIBS)
nix_LDFLAGS = -pthread $(SODIUM_LIBS) $(EDITLINE_LIBS) $(BOOST_LDFLAGS) -lboost_context -lboost_thread -lboost_system
$(foreach name, \
nix-build nix-channel nix-collect-garbage nix-copy-closure nix-daemon nix-env nix-hash nix-instantiate nix-prefetch-url nix-shell nix-store, \