Pierre Neidhardt <ambre...@gmail.com> writes:

> Thanks for the feedback!
>
>> However, the first step is to figure out why 'boost' is failing to find
>> icu4c.  Would you like to investigate?
>
> I usually happily answer "yes" to those questions, but this time I'll
> pass: aegisub is not really a priority for me at the moment and I don't
> have a great opinion of boost, so...
>
> Anyone else? :p

That's okay, I appreciate the bug report nonetheless.

I worked on it, and the following preliminary patch seems to fix the
problem for me on 'core-updates'.  I didn't try building aegisub, but
boost builds with messages suggesting that ICU support is now included.

If someone's motivated to do so, they could fix 'aegisub' on master by
adding a 'boost/fixed' package that inherits from 'boost' but includes
the fixes included in the following patch.

      Mark


>From 62a9ef1337010771c9f79c64e7b84a855c45df1f Mon Sep 17 00:00:00 2001
From: Mark H Weaver <m...@netris.org>
Date: Sun, 8 Apr 2018 14:40:00 -0400
Subject: [PATCH] gnu: boost: Fix ICU support.

* gnu/packages/patches/boost-fix-icu-build.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/boost.scm (boost)[source]: Add the patch.
[arguments]: In the custom configure phase, pass --with-icu=...
to ./bootstrap.sh
---
 gnu/local.mk                                   |  1 +
 gnu/packages/boost.scm                         | 13 ++++--
 gnu/packages/patches/boost-fix-icu-build.patch | 59 ++++++++++++++++++++++++++
 3 files changed, 69 insertions(+), 4 deletions(-)
 create mode 100644 gnu/packages/patches/boost-fix-icu-build.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 6cf49ad07..5888d32f5 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -577,6 +577,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/bcftools-regidx-unsigned-char.patch	\
   %D%/packages/patches/binutils-loongson-workaround.patch	\
   %D%/packages/patches/blast+-fix-makefile.patch		\
+  %D%/packages/patches/boost-fix-icu-build.patch		\
   %D%/packages/patches/btrfs-progs-e-value-block.patch		\
   %D%/packages/patches/byobu-writable-status.patch		\
   %D%/packages/patches/cairo-CVE-2016-9082.patch			\
diff --git a/gnu/packages/boost.scm b/gnu/packages/boost.scm
index 674877a88..6b17e30a8 100644
--- a/gnu/packages/boost.scm
+++ b/gnu/packages/boost.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014 John Darrington <j...@gnu.org>
-;;; Copyright © 2014, 2015 Mark H Weaver <m...@netris.org>
+;;; Copyright © 2014, 2015, 2018 Mark H Weaver <m...@netris.org>
 ;;; Copyright © 2015 Andreas Enge <andr...@enge.fr>
 ;;; Copyright © 2016 Eric Bavier <bav...@member.fsf.org>
 ;;; Copyright © 2015 Ludovic Courtès <l...@gnu.org>
@@ -52,7 +52,8 @@
                     ".tar.bz2"))
               (sha256
                (base32
-                "1aaw48cmimsskzgiclwn0iifp62a5iw9cbqrhfari876af1828ap"))))
+                "1aaw48cmimsskzgiclwn0iifp62a5iw9cbqrhfari876af1828ap"))
+              (patches (search-patches "boost-fix-icu-build.patch"))))
     (build-system gnu-build-system)
     (inputs `(("icu4c" ,icu4c)
               ("zlib" ,zlib)))
@@ -81,8 +82,9 @@
        (modify-phases %standard-phases
          (delete 'bootstrap)
          (replace 'configure
-           (lambda* (#:key outputs #:allow-other-keys)
-             (let ((out (assoc-ref outputs "out")))
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((icu (assoc-ref inputs "icu4c"))
+                   (out (assoc-ref outputs "out")))
                (substitute* '("libs/config/configure"
                               "libs/spirit/classic/phoenix/test/runtest.sh"
                               "tools/build/doc/bjam.qbk"
@@ -96,6 +98,9 @@
 
                (invoke "./bootstrap.sh"
                        (string-append "--prefix=" out)
+                       ;; Auto-detection looks for ICU only in traditional
+                       ;; install locations.
+                       (string-append "--with-icu=" icu)
                        "--with-toolset=gcc"))))
          (replace 'build
            (lambda* (#:key make-flags #:allow-other-keys)
diff --git a/gnu/packages/patches/boost-fix-icu-build.patch b/gnu/packages/patches/boost-fix-icu-build.patch
new file mode 100644
index 000000000..389f60e30
--- /dev/null
+++ b/gnu/packages/patches/boost-fix-icu-build.patch
@@ -0,0 +1,59 @@
+Pass -std=c++11 when compiling files that include the ICU headers.  Without
+this flag, compilation fails and causes Boost's build system to remove ICU
+support.  Note that $(pkg-config --variable=CXXFLAGS icu-uc) includes
+"-std=c++11", but Boost's build system does not use 'pkg-config'.
+
+--- boost_1_66_0/libs/locale/build/Jamfile.v2.orig	2017-12-13 18:56:44.000000000 -0500
++++ boost_1_66_0/libs/locale/build/Jamfile.v2	2018-04-08 14:13:17.953484787 -0400
+@@ -65,8 +65,8 @@
+ 
+ if $(ICU_LINK)
+ {
+-    ICU_OPTS = <include>$(ICU_PATH)/include <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin <runtime-link>shared ;
+-    ICU64_OPTS = <include>$(ICU_PATH)/include <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin64 <runtime-link>shared ;
++    ICU_OPTS = <include>$(ICU_PATH)/include <cxxflags>-std=c++11 <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin <runtime-link>shared ;
++    ICU64_OPTS = <include>$(ICU_PATH)/include <cxxflags>-std=c++11 <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin64 <runtime-link>shared ;
+ }
+ else
+ {
+@@ -120,7 +120,8 @@
+ 
+     explicit icuuc icudt icuin ;
+ 
+-    ICU_OPTS =   <include>$(ICU_PATH)/include 
++    ICU_OPTS =   <include>$(ICU_PATH)/include
++      <cxxflags>-std=c++11
+       <library>icuuc/<link>shared/<runtime-link>shared 
+       <library>icudt/<link>shared/<runtime-link>shared 
+       <library>icuin/<link>shared/<runtime-link>shared
+@@ -179,7 +180,8 @@
+ 
+     explicit icuuc_64 icudt_64 icuin_64 ;
+ 
+-    ICU64_OPTS =   <include>$(ICU_PATH)/include 
++    ICU64_OPTS =   <include>$(ICU_PATH)/include
++      <cxxflags>-std=c++11
+       <library>icuuc_64/<link>shared/<runtime-link>shared 
+       <library>icudt_64/<link>shared/<runtime-link>shared 
+       <library>icuin_64/<link>shared/<runtime-link>shared
+--- boost_1_66_0/libs/regex/build/Jamfile.v2.orig	2017-12-13 18:56:48.000000000 -0500
++++ boost_1_66_0/libs/regex/build/Jamfile.v2	2018-04-08 14:11:56.405080410 -0400
+@@ -44,7 +44,7 @@
+ 
+    if $(ICU_LINK)
+    {
+-      ICU_OPTS = <include>$(ICU_PATH)/include <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin <define>BOOST_HAS_ICU=1 <runtime-link>shared ;
++      ICU_OPTS = <include>$(ICU_PATH)/include <cxxflags>-std=c++11 <linkflags>$(ICU_LINK) <dll-path>$(ICU_PATH)/bin <define>BOOST_HAS_ICU=1 <runtime-link>shared ;
+    }
+    else
+    {
+@@ -77,7 +77,8 @@
+       lib icuin : : <name>this_is_an_invalid_library_name ;
+ 
+       ICU_OPTS = 
+-         <include>$(ICU_PATH)/include 
++         <include>$(ICU_PATH)/include
++         <cxxflags>-std=c++11
+          <runtime-link>shared:<library>icuuc/<link>shared
+          <runtime-link>shared:<library>icudt/<link>shared
+          <runtime-link>shared:<library>icuin/<link>shared
-- 
2.16.3

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