Source Mage code commit list

[Pavel Vinogradov <scm AT sourcemage.org>]

GIT changes to master grimoire by Pavel Vinogradov <public AT sourcemage.org>:

 doc/groff/HISTORY            |    1 +
 doc/groff/PRE_BUILD          |    4 ++++
 doc/groff/patches/math.patch |   17 +++++++++++++++++
 3 files changed, 22 insertions(+)

New commits:
commit e6eed70a807b467d3d7ac386c0027a6484e88a7b
Author: Pavel Vinogradov <public AT sourcemage.org>
Commit: Pavel Vinogradov <public AT sourcemage.org>

    doc/groff: added patch to use signbit from gcc

diff --git a/doc/groff/HISTORY b/doc/groff/HISTORY
index 0354024..a20e9c9 100644
--- a/doc/groff/HISTORY
+++ b/doc/groff/HISTORY
@@ -1,5 +1,6 @@
 2018-12-24 Pavel Vinogradov <public AT sourcemage.org>
        * DETAILS: version 1.22.4
+       * PRE_BUILD, patches/math.patch: added patch to use signbit from gcc
 
 2015-10-17 Treeve Jelbert <treeve AT sourcemage.org>
        * DETAILS: version 1.22.3
diff --git a/doc/groff/PRE_BUILD b/doc/groff/PRE_BUILD
new file mode 100755
index 0000000..f80ee7d
--- /dev/null
+++ b/doc/groff/PRE_BUILD
@@ -0,0 +1,4 @@
+default_pre_build &&
+cd "${SOURCE_DIRECTORY}" &&
+
+apply_patch_dir patches
diff --git a/doc/groff/patches/math.patch b/doc/groff/patches/math.patch
new file mode 100644
index 0000000..d7454d3
--- /dev/null
+++ b/doc/groff/patches/math.patch
@@ -0,0 +1,17 @@
+diff --git a/lib/math.in.h b/lib/math.in.h
+--- a/lib/math.in.h
++++ b/lib/math.in.h
+@@ -2396,13 +2396,6 @@
+     sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
+     gl_signbitf (x))
+ # endif
+-# ifdef __cplusplus
+-#  if defined signbit || defined GNULIB_NAMESPACE
+-_GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
+-#   undef signbit
+-_GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
+-#  endif
+-# endif
+ #elif defined GNULIB_POSIXCHECK
+ # if defined signbit
+ _GL_WARN_REAL_FLOATING_DECL (signbit);