[PATCH 37/94] app-shells/bash: fix PIPESIZE when cross-compiled to Hurd

We have to hack PIPESIZE because psize.sh doesn't behave correctly
for cross-compilation. It picks a too-small value and so config.status
generation at end of configure will hang natively.

I compiled psize.c manually and ran it on 32-bit Hurd (i686-gnu) to
verify the correct value.

Also, add a comment for another cross workaround we already had.

Bug: https://lists.debian.org/debian-cross/2023/11/msg00000.html
Bug: https://lists.gnu.org/archive/html/bug-bash/2024-11/msg00202.html
Bug: https://lists.nongnu.org/archive/html/bug-bash/2005-04/msg00074.html
Signed-off-by: Sam James <[email protected]>
---
 app-shells/bash/bash-5.3_p9.ebuild               | 16 ++++++++++++++++
 .../bash/bash-5.4_alpha_pre20251202.ebuild       | 16 ++++++++++++++++
 app-shells/bash/bash-9999.ebuild                 | 16 ++++++++++++++++
 3 files changed, 48 insertions(+)

diff --git a/app-shells/bash/bash-5.3_p9.ebuild b/app-shells/bash/bash-5.3_p9.ebuild
index 0c65da5eec0cd..e36c6f85707fb 100644
--- a/app-shells/bash/bash-5.3_p9.ebuild
+++ b/app-shells/bash/bash-5.3_p9.ebuild
@@ -175,7 +175,23 @@ src_configure() {
 	unset -v YACC
 
 	if tc-is-cross-compiler; then
+		# https://lists.gnu.org/archive/html/bug-bash/2025-05/msg00029.html
 		export CFLAGS_FOR_BUILD="${BUILD_CFLAGS} -std=gnu17"
+
+		if use kernel_Hurd ; then
+			# Necessary for cross-built bash for Hurd, otherwise
+			# config.status generation at end of configure will hang
+			# natively.
+			#
+			# https://lists.debian.org/debian-cross/2023/11/msg00000.html
+			# https://lists.gnu.org/archive/html/bug-bash/2024-11/msg00202.html
+			# https://lists.gnu.org/archive/html/bug-bash/2005-04/msg00074.html
+			cat <<-EOF > builtins/psize.sh || die
+			#!/bin/sh
+			echo "#define PIPESIZE 16384"
+			EOF
+			chmod +x builtins/psize.sh || die
+		fi
 	fi
 
 	myconf=(
diff --git a/app-shells/bash/bash-5.4_alpha_pre20251202.ebuild b/app-shells/bash/bash-5.4_alpha_pre20251202.ebuild
index 6fec1496d1b36..8c08d6cff5307 100644
--- a/app-shells/bash/bash-5.4_alpha_pre20251202.ebuild
+++ b/app-shells/bash/bash-5.4_alpha_pre20251202.ebuild
@@ -178,7 +178,23 @@ src_configure() {
 	unset -v YACC
 
 	if tc-is-cross-compiler; then
+		# https://lists.gnu.org/archive/html/bug-bash/2025-05/msg00029.html
 		export CFLAGS_FOR_BUILD="${BUILD_CFLAGS} -std=gnu17"
+
+		if use kernel_Hurd ; then
+			# Necessary for cross-built bash for Hurd, otherwise
+			# config.status generation at end of configure will hang
+			# natively.
+			#
+			# https://lists.debian.org/debian-cross/2023/11/msg00000.html
+			# https://lists.gnu.org/archive/html/bug-bash/2024-11/msg00202.html
+			# https://lists.gnu.org/archive/html/bug-bash/2005-04/msg00074.html
+			cat <<-EOF > builtins/psize.sh || die
+			#!/bin/sh
+			echo "#define PIPESIZE 16384"
+			EOF
+			chmod +x builtins/psize.sh || die
+		fi
 	fi
 
 	myconf=(
diff --git a/app-shells/bash/bash-9999.ebuild b/app-shells/bash/bash-9999.ebuild
index 58734d9d40cc3..65666522a2a2c 100644
--- a/app-shells/bash/bash-9999.ebuild
+++ b/app-shells/bash/bash-9999.ebuild
@@ -178,7 +178,23 @@ src_configure() {
 	unset -v YACC
 
 	if tc-is-cross-compiler; then
+		# https://lists.gnu.org/archive/html/bug-bash/2025-05/msg00029.html
 		export CFLAGS_FOR_BUILD="${BUILD_CFLAGS} -std=gnu17"
+
+		if use kernel_Hurd ; then
+			# Necessary for cross-built bash for Hurd, otherwise
+			# config.status generation at end of configure will hang
+			# natively.
+			#
+			# https://lists.debian.org/debian-cross/2023/11/msg00000.html
+			# https://lists.gnu.org/archive/html/bug-bash/2024-11/msg00202.html
+			# https://lists.gnu.org/archive/html/bug-bash/2005-04/msg00074.html
+			cat <<-EOF > builtins/psize.sh || die
+			#!/bin/sh
+			echo "#define PIPESIZE 16384"
+			EOF
+			chmod +x builtins/psize.sh || die
+		fi
 	fi
 
 	myconf=(
-- 
2.53.0