diff --git a/x11/library/libexplain/actions.py b/x11/library/libexplain/actions.py
index 70043dbf9c..389bfeff71 100644
--- a/x11/library/libexplain/actions.py
+++ b/x11/library/libexplain/actions.py
@@ -11,9 +11,13 @@ from pisi.actionsapi import get
 
 
 def setup():
+    shelltools.copy("etc/configure.ac", "configure.ac")
     skiptests=["t0555a","t0524a"]
     for t in skiptests:
         shelltools.system('sed -i "s/\([ \t]\)$t\([ \t]\)/\1/g" Makefile.in')
+    
+    shelltools.export("CPPFLAGS", "-fPIC")
+    autotools.autoreconf("-fiv")
     autotools.configure("--disable-static")
 
 def build():
diff --git a/x11/library/libexplain/files/0001-Fix-build-failure-with-GCC10.patch b/x11/library/libexplain/files/0001-Fix-build-failure-with-GCC10.patch
new file mode 100644
index 0000000000..919be31c3b
--- /dev/null
+++ b/x11/library/libexplain/files/0001-Fix-build-failure-with-GCC10.patch
@@ -0,0 +1,25 @@
+From b021f9835185ed262f203f83b9e6643d6374f9be Mon Sep 17 00:00:00 2001
+From: Christophe Giboudeaux <christophe@krop.fr>
+Date: Thu, 4 Feb 2021 22:42:13 +0100
+Subject: [PATCH] Fix build failure with GCC10
+
+---
+ libexplain/output/stderr.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libexplain/output/stderr.h b/libexplain/output/stderr.h
+index 5494880..7956cfc 100644
+--- a/libexplain/output/stderr.h
++++ b/libexplain/output/stderr.h
+@@ -22,7 +22,7 @@
+ 
+ #include <libexplain/output.h>
+ 
+-explain_output_t explain_output_static_stderr;
++extern explain_output_t explain_output_static_stderr;
+ 
+ #endif /* LIBEXPLAIN_OUTPUT_STDERR_H */
+ /* vim: set ts=8 sw=4 et : */
+-- 
+2.30.0
+
diff --git a/x11/library/libexplain/files/libexplain-1.4-largefile.patch b/x11/library/libexplain/files/libexplain-1.4-largefile.patch
new file mode 100644
index 0000000000..6e01765a3d
--- /dev/null
+++ b/x11/library/libexplain/files/libexplain-1.4-largefile.patch
@@ -0,0 +1,19 @@
+Index: libexplain/ac/fcntl.h
+===================================================================
+--- libexplain/ac/fcntl.h.orig
++++ libexplain/ac/fcntl.h
+@@ -65,8 +65,14 @@
+  * flags values returned by the kernel.
+  */
+ #if defined(__linux__) && (O_LARGEFILE == 0)
++#if defined(__aarch64__)
++#define O_LARGEFILE_HIDDEN 0400000
++#elif defined(__powerpc64__)
++#define O_LARGEFILE_HIDDEN 0200000
++#else
+ #define O_LARGEFILE_HIDDEN 0100000
+ #endif
++#endif
+ 
+ 
+ /*
diff --git a/x11/library/libexplain/files/libexplain-1.4-missing-defines.patch b/x11/library/libexplain/files/libexplain-1.4-missing-defines.patch
index fe723d76d6..8d1c556249 100644
--- a/x11/library/libexplain/files/libexplain-1.4-missing-defines.patch
+++ b/x11/library/libexplain/files/libexplain-1.4-missing-defines.patch
@@ -1,9 +1,11 @@
---- libexplain-1.4.D001.orig/libexplain/buffer/file_inode_flags.c
-+++ libexplain-1.4.D001/libexplain/buffer/file_inode_flags.c
+Index: libexplain/buffer/file_inode_flags.c
+===================================================================
+--- libexplain/buffer/file_inode_flags.c.orig
++++ libexplain/buffer/file_inode_flags.c
 @@ -28,6 +28,14 @@
-
+ 
  #if defined(FS_IOC_GETFLAGS) || defined(FS_IOC32_GETFLAGS)
-
+ 
 +#ifndef FS_ECOMPR_FL
 +#define FS_ECOMPR_FL                    0x00000800 /* Compression error */
 +#endif
@@ -14,4 +16,16 @@
 +
  void
  explain_buffer_file_inode_flags(explain_string_buffer_t *sb, int value)
- {
\ No newline at end of file
+ {
+Index: libexplain/ac/linux/net_tstamp.h
+===================================================================
+--- libexplain/ac/linux/net_tstamp.h.orig
++++ libexplain/ac/linux/net_tstamp.h
+@@ -28,6 +28,7 @@
+ #include <libexplain/config.h>
+ 
+ #ifdef HAVE_LINUX_NET_TSTAMP_H
++#include <bits/types/clockid_t.h>
+ #include <linux/net_tstamp.h>
+ #endif
+ 
diff --git a/x11/library/libexplain/files/libexplain-1.4-syscall.patch b/x11/library/libexplain/files/libexplain-1.4-syscall.patch
new file mode 100644
index 0000000000..e3369571fe
--- /dev/null
+++ b/x11/library/libexplain/files/libexplain-1.4-syscall.patch
@@ -0,0 +1,39 @@
+Index: explain/syscall/ustat.c
+===================================================================
+--- explain/syscall/ustat.c.orig
++++ explain/syscall/ustat.c
+@@ -30,7 +30,7 @@
+ #include <explain/syscall/ustat.h>
+ 
+ 
+-#ifndef HAVE_USTAT
++#if !defined(HAVE_USTAT_H) && !defined(LINUX_TYPES_H_STRUCT_USTAT)
+ 
+ struct ustat
+ {
+Index: libexplain/buffer/enfile.c
+===================================================================
+--- libexplain/buffer/enfile.c.orig
++++ libexplain/buffer/enfile.c
+@@ -38,7 +38,7 @@ get_maxfile(void)
+ {
+     if (explain_option_dialect_specific())
+     {
+-#ifdef __linux__
++#ifdef SYS__sysctl
+         /*
+          * In the linux kernel, if get_empty_filp() returns NULL, the open
+          * system call (and others) will return ENFILE.
+Index: libexplain/buffer/errno/listen.c
+===================================================================
+--- libexplain/buffer/errno/listen.c.orig
++++ libexplain/buffer/errno/listen.c
+@@ -72,7 +72,7 @@ append_getsockname(explain_string_buffer
+ static int
+ get_somaxconn(void)
+ {
+-#ifdef __linux__
++#ifdef SYS__sysctl
+     struct __sysctl_args args;
+     long somaxconn;
+     size_t somaxconn_size = sizeof(somaxconn);
diff --git a/x11/library/libexplain/files/sanitize-bison.patch b/x11/library/libexplain/files/sanitize-bison.patch
new file mode 100644
index 0000000000..5c4ee77ef9
--- /dev/null
+++ b/x11/library/libexplain/files/sanitize-bison.patch
@@ -0,0 +1,108 @@
+Author: Andreas Beckmann <anbe@debian.org>
+Description: sanitize bison usage
+ use
+   %define api.prefix {...}
+ instead of crude
+   sed -e 's/[yY][yY]/.../g'
+
+ Thanks to Akim Demaille for the hint! (#960608)
+
+--- a/codegen/gram.y
++++ b/codegen/gram.y
+@@ -17,6 +17,8 @@
+  * with this program. If not, see <http://www.gnu.org/licenses/>.
+  */
+ 
++%define api.prefix {gram_}
++
+ %{
+ 
+ #include <libexplain/ac/stdio.h>
+--- a/libexplain/acl_grammar.y
++++ b/libexplain/acl_grammar.y
+@@ -17,6 +17,8 @@
+  * along with this program. If not, see <http://www.gnu.org/licenses/>.
+  */
+ 
++%define api.prefix {acl_grammar_}
++
+ %{
+ 
+ #include <libexplain/ac/ctype.h>
+--- a/libexplain/parse_bits.y
++++ b/libexplain/parse_bits.y
+@@ -17,6 +17,8 @@
+  along with this program. If not, see <http://www.gnu.org/licenses/>.
+  */
+ 
++%define api.prefix {parse_bits_}
++
+ %{
+ 
+ #include <libexplain/ac/ctype.h>
+--- a/libexplain/printf_format.y
++++ b/libexplain/printf_format.y
+@@ -17,6 +17,8 @@
+  * along with this program. If not, see <http://www.gnu.org/licenses/>.
+  */
+ 
++%define api.prefix {printf_format_}
++
+ %{
+ 
+ #include <libexplain/ac/assert.h>
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -357,9 +357,9 @@ codegen/get_user_name.$(OBJEXT) codegen/
+ 
+ codegen/gram.yacc.c codegen/gram.yacc.h: codegen/gram.y
+ 	$(YACC) -d $(YFLAGS) codegen/gram.y
+-	sed -e 's/[yY][yY]/gram_/g' -e '/<stdio.h>/d' -e '/<stdlib.h>/d' -e \
++	sed -e '/<stdio.h>/d' -e '/<stdlib.h>/d' -e \
+ 		'/<stddef.h>/d' y.tab.c > codegen/gram.yacc.c
+-	sed -e 's/[yY][yY]/gram_/g' -e 's/Y_TAB_H/codegen_gram_YACC_H/g' \
++	sed -e '' \
+ 		y.tab.h > codegen/gram.yacc.h
+ 	test -f y.output && mv y.output codegen/gram.output || true
+ 	rm -f y.tab.c y.tab.h y.output || true
+@@ -4016,11 +4016,10 @@ libexplain/acl_get_file_or_die.$(OBJEXT)
+ libexplain/acl_grammar.yacc.c libexplain/acl_grammar.yacc.h: \
+ 		libexplain/acl_grammar.y
+ 	$(YACC) -d $(YFLAGS) libexplain/acl_grammar.y
+-	sed -e 's/[yY][yY]/acl_grammar_/g' -e '/<stdio.h>/d' -e \
++	sed -e '/<stdio.h>/d' -e \
+ 		'/<stdlib.h>/d' -e '/<stddef.h>/d' y.tab.c > \
+ 		libexplain/acl_grammar.yacc.c
+-	sed -e 's/[yY][yY]/acl_grammar_/g' -e \
+-		's/Y_TAB_H/libexplain_acl_grammar_YACC_H/g' y.tab.h > \
++	sed -e '' y.tab.h > \
+ 		libexplain/acl_grammar.yacc.h
+ 	test -f y.output && mv y.output libexplain/acl_grammar.output || true
+ 	rm -f y.tab.c y.tab.h y.output || true
+@@ -31058,10 +31057,9 @@ libexplain/output/warning.$(OBJEXT) libe
+ libexplain/parse_bits.yacc.c libexplain/parse_bits.yacc.h: \
+ 		libexplain/parse_bits.y
+ 	$(YACC) -d $(YFLAGS) libexplain/parse_bits.y
+-	sed -e 's/[yY][yY]/parse_bits_/g' -e '/<stdio.h>/d' -e '/<stdlib.h>/d' \
++	sed -e '/<stdio.h>/d' -e '/<stdlib.h>/d' \
+ 		-e '/<stddef.h>/d' y.tab.c > libexplain/parse_bits.yacc.c
+-	sed -e 's/[yY][yY]/parse_bits_/g' -e \
+-		's/Y_TAB_H/libexplain_parse_bits_YACC_H/g' y.tab.h > \
++	sed -e '' y.tab.h > \
+ 		libexplain/parse_bits.yacc.h
+ 	test -f y.output && mv y.output libexplain/parse_bits.output || true
+ 	rm -f y.tab.c y.tab.h y.output || true
+@@ -31418,11 +31416,10 @@ $(includedir)/libexplain/printf.h: .mkdi
+ libexplain/printf_format.yacc.c libexplain/printf_format.yacc.h: \
+ 		libexplain/printf_format.y
+ 	$(YACC) -d $(YFLAGS) libexplain/printf_format.y
+-	sed -e 's/[yY][yY]/printf_format_/g' -e '/<stdio.h>/d' -e \
++	sed -e '/<stdio.h>/d' -e \
+ 		'/<stdlib.h>/d' -e '/<stddef.h>/d' y.tab.c > \
+ 		libexplain/printf_format.yacc.c
+-	sed -e 's/[yY][yY]/printf_format_/g' -e \
+-		's/Y_TAB_H/libexplain_printf_format_YACC_H/g' y.tab.h > \
++	sed -e '' y.tab.h > \
+ 		libexplain/printf_format.yacc.h
+ 	test -f y.output && mv y.output libexplain/printf_format.output || true
+ 	rm -f y.tab.c y.tab.h y.output || true
diff --git a/x11/library/libexplain/pspec.xml b/x11/library/libexplain/pspec.xml
index 62ffb6777a..0e5d113a6a 100644
--- a/x11/library/libexplain/pspec.xml
+++ b/x11/library/libexplain/pspec.xml
@@ -25,7 +25,11 @@
             <Dependency>ghostscript-devel</Dependency>
         </BuildDependencies>
         <Patches>
+            <Patch>0001-Fix-build-failure-with-GCC10.patch</Patch>
+            <Patch>sanitize-bison.patch</Patch>
             <Patch>libexplain-1.4-missing-defines.patch</Patch>
+            <Patch>libexplain-1.4-largefile.patch</Patch>
+            <Patch>libexplain-1.4-syscall.patch</Patch>
         </Patches>
     </Source>