[gentoo-dev] [PATCH 0/5] toolchain.eclass: Prefix patches, Cygwin related

[gentoo-dev] [PATCH 0/5] toolchain.eclass: Prefix patches, Cygwin related

[Michael Haubenwallner]

Hi,

please review these patches we have in prefix-overlay,
where patches 3-5 are for Gentoo Prefix on Cygwin.

Thanks!
/haubi/

[gentoo-dev] [PATCH 1/5] toolchain.eclass: ROOT->EROOT at looking for gcc specs file

[Michael Haubenwallner]

---
 eclass/toolchain.eclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index 68e4ce15b37..fe41a80db28 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -2207,7 +2207,7 @@ do_gcc_config() {
 		[[ -n ${current_specs} ]] && use_specs=-${current_specs}
 
 		if [[ -n ${use_specs} ]] && \
-		   [[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
+		   [[ ! -e ${EROOT}etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
 		then
 			ewarn "The currently selected specs-specific gcc config,"
 			ewarn "${current_specs}, doesn't exist anymore. This is usually"
-- 
2.16.1

Re: [gentoo-dev] [PATCH 1/5] toolchain.eclass: ROOT->EROOT at looking for gcc specs file

[Michał Górny]

W dniu śro, 20.06.2018 o godzinie 19∶49 +0200, użytkownik Michael
Haubenwallner napisał:
> ---
>  eclass/toolchain.eclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> index 68e4ce15b37..fe41a80db28 100644
> --- a/eclass/toolchain.eclass
> +++ b/eclass/toolchain.eclass
> @@ -2207,7 +2207,7 @@ do_gcc_config() {
>  		[[ -n ${current_specs} ]] && use_specs=-
> ${current_specs}
>  
>  		if [[ -n ${use_specs} ]] && \
> -		   [[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-
> ${GCC_CONFIG_VER}${use_specs} ]]
> +		   [[ ! -e ${EROOT}etc/env.d/gcc/${CTARGET}-
> ${GCC_CONFIG_VER}${use_specs} ]]

${EROOT%/}/ for EAPI 7 compliance.

>  		then
>  			ewarn "The currently selected specs-specific 
> gcc config,"
>  			ewarn "${current_specs}, doesn't exist
> anymore. This is usually"
-- 
Best regards,
Michał Górny

Re: [gentoo-dev] [PATCH 1/5] toolchain.eclass: ROOT->EROOT at looking for gcc specs file

[Marty E. Plummer]

On Wed, Jun 20, 2018 at 07:49:01PM +0200, Michael Haubenwallner wrote:
> ---
>  eclass/toolchain.eclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> index 68e4ce15b37..fe41a80db28 100644
> --- a/eclass/toolchain.eclass
> +++ b/eclass/toolchain.eclass
> @@ -2207,7 +2207,7 @@ do_gcc_config() {
>  		[[ -n ${current_specs} ]] && use_specs=-${current_specs}
>  
>  		if [[ -n ${use_specs} ]] && \
> -		   [[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
> +		   [[ ! -e ${EROOT}etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
${EROOT%/}/etc... would be more portable, correct? Not all EAPI have no
trailing /.
>  		then
>  			ewarn "The currently selected specs-specific gcc config,"
>  			ewarn "${current_specs}, doesn't exist anymore. This is usually"
> -- 
> 2.16.1
> 
> 

[gentoo-dev] [PATCH 2/5] toolchain.eclass: D->ED for where to start cleanups

[Michael Haubenwallner]

---
 eclass/toolchain.eclass | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index fe41a80db28..a51d8e84f5e 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1720,9 +1720,9 @@ toolchain_src_install() {
 	S="${WORKDIR}"/build emake -j1 DESTDIR="${D}" install || die
 
 	# Punt some tools which are really only useful while building gcc
-	find "${D}" -name install-tools -prune -type d -exec rm -rf "{}" \;
+	find "${ED}" -name install-tools -prune -type d -exec rm -rf "{}" \;
 	# This one comes with binutils
-	find "${D}" -name libiberty.a -delete
+	find "${ED}" -name libiberty.a -delete
 
 	# Move the libraries to the proper location
 	gcc_movelibs
@@ -1731,7 +1731,7 @@ toolchain_src_install() {
 	if ! is_crosscompile ; then
 		local EXEEXT
 		eval $(grep ^EXEEXT= "${WORKDIR}"/build/gcc/config.log)
-		[[ -r ${D}${BINPATH}/gcc${EXEEXT} ]] || die "gcc not found in ${D}"
+		[[ -r ${D}${BINPATH}/gcc${EXEEXT} ]] || die "gcc not found in ${ED}"
 	fi
 
 	dodir /etc/env.d/gcc
@@ -1810,7 +1810,7 @@ toolchain_src_install() {
 			|| prepman "${DATAPATH#${EPREFIX}}"
 	fi
 	# prune empty dirs left behind
-	find "${D}" -depth -type d -delete 2>/dev/null
+	find "${ED}" -depth -type d -delete 2>/dev/null
 
 	# install testsuite results
 	if use regression-test; then
@@ -1966,7 +1966,7 @@ gcc_movelibs() {
 	for FROMDIR in ${removedirs} ; do
 		rmdir "${D}"${FROMDIR} >& /dev/null
 	done
-	find -depth "${D}" -type d -exec rmdir {} + >& /dev/null
+	find -depth "${ED}" -type d -exec rmdir {} + >& /dev/null
 }
 
 # make sure the libtool archives have libdir set to where they actually
-- 
2.16.1

[gentoo-dev] [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Michael Haubenwallner]

Path starting with "//" is a Network path for Cygwin:
As DATAPATH starts with EPREFIX, we have to use it with ${ROOT%/}.
---
 eclass/toolchain.eclass | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index a51d8e84f5e..bc3a80e0e8a 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -2133,12 +2133,12 @@ toolchain_pkg_postinst() {
 
 		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
 		# DATAPATH has EPREFIX already, use ROOT with it
-		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
-		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
+		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
+		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
 
 		# Since these aren't critical files and portage sucks with
 		# handling of binpkgs, don't require these to be found
-		cp "${ROOT}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/ 2>/dev/null
+		cp "${ROOT%/}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/ 2>/dev/null
 	fi
 
 	if use regression-test ; then
-- 
2.16.1

Re: [gentoo-dev] [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Ulrich Mueller]

[-- Attachment #1: Type: text/plain, Size: 1404 bytes --]

>>>>> On Wed, 20 Jun 2018, Michael Haubenwallner wrote:

> Path starting with "//" is a Network path for Cygwin:
> As DATAPATH starts with EPREFIX, we have to use it with ${ROOT%/}.
> ---
>  eclass/toolchain.eclass | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)

> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> index a51d8e84f5e..bc3a80e0e8a 100644
> --- a/eclass/toolchain.eclass
> +++ b/eclass/toolchain.eclass
> @@ -2133,12 +2133,12 @@ toolchain_pkg_postinst() {
 
>  		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
>  		# DATAPATH has EPREFIX already, use ROOT with it
> -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die

Looks a bit short-sighted for the destinations, since EROOT lost its
trailing slash in EAPI 7. So better use "${EROOT%/}/" there too.

>  		# Since these aren't critical files and portage sucks with
>  		# handling of binpkgs, don't require these to be found
> -		cp "${ROOT}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/ 2>/dev/null
> +		cp "${ROOT%/}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/
>  		# 2>/dev/null

Ditto.

>  	fi
 
>  	if use regression-test ; then
> -- 
> 2.16.1

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[gentoo-dev] Re: [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Michael Haubenwallner]

On 06/21/2018 12:40 AM, Ulrich Mueller wrote:
>>>>>> On Wed, 20 Jun 2018, Michael Haubenwallner wrote:
> 
>> Path starting with "//" is a Network path for Cygwin:
>> As DATAPATH starts with EPREFIX, we have to use it with ${ROOT%/}.
>> ---
>>  eclass/toolchain.eclass | 6 +++---
>>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
>> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
>> index a51d8e84f5e..bc3a80e0e8a 100644
>> --- a/eclass/toolchain.eclass
>> +++ b/eclass/toolchain.eclass
>> @@ -2133,12 +2133,12 @@ toolchain_pkg_postinst() {
>  
>>  		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
>>  		# DATAPATH has EPREFIX already, use ROOT with it
>> -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
>> -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
>> +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
>> +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> 
> Looks a bit short-sighted for the destinations, since EROOT lost its
> trailing slash in EAPI 7. So better use "${EROOT%/}/" there too.

Well, DATAPATH already has the leading slash, and I have to avoid double slash here.

/haubi/

Re: [gentoo-dev] Re: [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Marty E. Plummer]

On Thu, Jun 21, 2018 at 10:16:45AM +0200, Michael Haubenwallner wrote:
> On 06/21/2018 12:40 AM, Ulrich Mueller wrote:
> >>>>>> On Wed, 20 Jun 2018, Michael Haubenwallner wrote:
> > 
> >> Path starting with "//" is a Network path for Cygwin:
> >> As DATAPATH starts with EPREFIX, we have to use it with ${ROOT%/}.
> >> ---
> >>  eclass/toolchain.eclass | 6 +++---
> >>  1 file changed, 3 insertions(+), 3 deletions(-)
> > 
> >> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> >> index a51d8e84f5e..bc3a80e0e8a 100644
> >> --- a/eclass/toolchain.eclass
> >> +++ b/eclass/toolchain.eclass
> >> @@ -2133,12 +2133,12 @@ toolchain_pkg_postinst() {
> >  
> >>  		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
> >>  		# DATAPATH has EPREFIX already, use ROOT with it
> >> -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> >> -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> >> +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> >> +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> > 
> > Looks a bit short-sighted for the destinations, since EROOT lost its
> > trailing slash in EAPI 7. So better use "${EROOT%/}/" there too.
> 
> Well, DATAPATH already has the leading slash, and I have to avoid double slash here.
> 
> /haubi/
>
Well, still slap in the %/ to catch any extra trailing slash in ${ROOT}
itself.

Re: [gentoo-dev] Re: [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Marty E. Plummer]

On Thu, Jun 21, 2018 at 10:16:45AM +0200, Michael Haubenwallner wrote:
> On 06/21/2018 12:40 AM, Ulrich Mueller wrote:
> >>>>>> On Wed, 20 Jun 2018, Michael Haubenwallner wrote:
> > 
> >> Path starting with "//" is a Network path for Cygwin:
> >> As DATAPATH starts with EPREFIX, we have to use it with ${ROOT%/}.
> >> ---
> >>  eclass/toolchain.eclass | 6 +++---
> >>  1 file changed, 3 insertions(+), 3 deletions(-)
> > 
> >> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> >> index a51d8e84f5e..bc3a80e0e8a 100644
> >> --- a/eclass/toolchain.eclass
> >> +++ b/eclass/toolchain.eclass
> >> @@ -2133,12 +2133,12 @@ toolchain_pkg_postinst() {
> >  
> >>  		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
> >>  		# DATAPATH has EPREFIX already, use ROOT with it
> >> -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> >> -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> >> +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
> >> +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
> > 
> > Looks a bit short-sighted for the destinations, since EROOT lost its
> > trailing slash in EAPI 7. So better use "${EROOT%/}/" there too.
> 
> Well, DATAPATH already has the leading slash, and I have to avoid double slash here.
> 
> /haubi/
> 
 - 		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
 + 		mkdir -p "${EROOT%/}"/usr/{share/gcc-data,sbin,bin}
  		# DATAPATH has EPREFIX already, use ROOT with it
 -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
 -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
 +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT%/}"/usr/share/gcc-data/ || die
 +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT%/}"/usr/sbin/ || die

Re: [gentoo-dev] Re: [PATCH 3/5] toolchain.eclass: avoid leading double slash

[Ulrich Mueller]

[-- Attachment #1: Type: text/plain, Size: 726 bytes --]

>>>>> On Thu, 21 Jun 2018, Marty E Plummer wrote:

> On Thu, Jun 21, 2018 at 10:16:45AM +0200, Michael Haubenwallner wrote:
>> Well, DATAPATH already has the leading slash, and I have to avoid
>> double slash here.

>  - 		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
>  + 		mkdir -p "${EROOT%/}"/usr/{share/gcc-data,sbin,bin}
>   		# DATAPATH has EPREFIX already, use ROOT with it
>  -		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
>  -		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
>  +		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT%/}"/usr/share/gcc-data/ || die
>  +		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT%/}"/usr/sbin/ || die

Exactly.

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[gentoo-dev] [PATCH 4/5] toolchain.eclass: Cygwin provides posix threads

[Michael Haubenwallner]

Upstream Cygwin does build their gcc with posix threads for ages,
at least since gcc4-4.5.1-1.cygport (committed on Oct 3, 2010).
---
 eclass/toolchain.eclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index bc3a80e0e8a..faf96d2a41f 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1034,7 +1034,7 @@ toolchain_src_configure() {
 			confgcc+=( --enable-shared )
 		fi
 		case ${CHOST} in
-		mingw*|*-mingw*|*-cygwin)
+		mingw*|*-mingw*)
 			confgcc+=( --enable-threads=win32 ) ;;
 		*)
 			confgcc+=( --enable-threads=posix ) ;;
-- 
2.16.1

[gentoo-dev] [PATCH 5/5] toolchain.eclass: support gcc patches from cygwinports

[Michael Haubenwallner]

Download and apply patches found in Cygwin's gcc.cygport, maintained at
github/cygwinports/gcc, for a compiler running on cygwin.  The ebuild
can define the cygwinports' git commit id as CYGWINPORTS_GITREV.
---
 eclass/toolchain.eclass | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index faf96d2a41f..a16bfadc301 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -309,6 +309,14 @@ gentoo_urls() {
 #			ten Brugge's bounds-checking patches. If you want to use a patch
 #			for an older gcc version with a new gcc, make sure you set
 #			HTB_GCC_VER to that version of gcc.
+#
+#	CYGWINPORTS_GITREV
+#			If set, this variable signals that we should apply additional patches
+#			maintained by upstream Cygwin developers at github/cygwinports/gcc,
+#			using the specified git commit id there.  The list of patches to
+#			apply is extracted from gcc.cygport, maintained there as well.
+#			This is done for compilers running on Cygwin, not for cross compilers
+#			with a Cygwin target.
 get_gcc_src_uri() {
 	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
 	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
@@ -375,6 +383,10 @@ get_gcc_src_uri() {
 		fi
 	fi
 
+	# Cygwin patches from https://github.com/cygwinports/gcc
+	[[ -n ${CYGWINPORTS_GITREV} ]] && \
+		GCC_SRC_URI+=" elibc_Cygwin? ( https://github.com/cygwinports/gcc/archive/${CYGWINPORTS_GITREV}.zip )"
+
 	echo "${GCC_SRC_URI}"
 }
 
@@ -481,6 +493,8 @@ gcc_quick_unpack() {
 
 	use_if_iuse boundschecking && unpack "bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
 
+	[[ -n ${CYGWINPORTS_GITREV} ]] && use elibc_Cygwin && unpack "${CYGWINPORTS_GITREV}.zip"
+
 	popd > /dev/null
 }
 
@@ -505,6 +519,7 @@ toolchain_src_prepare() {
 	fi
 	do_gcc_HTB_patches
 	do_gcc_PIE_patches
+	do_gcc_CYGWINPORTS_patches
 	epatch_user
 
 	if ( tc_version_is_at_least 4.8.2 || use_if_iuse hardened ) && ! use vanilla ; then
@@ -645,6 +660,19 @@ do_gcc_PIE_patches() {
 	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-${PIE_VER}"
 }
 
+do_gcc_CYGWINPORTS_patches() {
+	[[ -n ${CYGWINPORTS_GITREV} ]] || return 0
+	use elibc_Cygwin || return 0
+
+	local p d="${WORKDIR}/gcc-${CYGWINPORTS_GITREV}"
+	for p in $(
+		eval "$(sed -ne '/PATCH_URI="/,/"/p' < "${d}"/gcc.cygport)"
+		echo ${PATCH_URI}
+	); do
+		epatch "${d}/${p}"
+	done
+}
+
 # configure to build with the hardened GCC specs as the default
 make_gcc_hard() {
 
-- 
2.16.1

Re: [gentoo-dev] [PATCH 5/5] toolchain.eclass: support gcc patches from cygwinports

[Michał Górny]

W dniu śro, 20.06.2018 o godzinie 19∶49 +0200, użytkownik Michael
Haubenwallner napisał:
> Download and apply patches found in Cygwin's gcc.cygport, maintained
> at
> github/cygwinports/gcc, for a compiler running on cygwin.  The ebuild
> can define the cygwinports' git commit id as CYGWINPORTS_GITREV.
> ---
>  eclass/toolchain.eclass | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> index faf96d2a41f..a16bfadc301 100644
> --- a/eclass/toolchain.eclass
> +++ b/eclass/toolchain.eclass
> @@ -309,6 +309,14 @@ gentoo_urls() {
>  #			ten Brugge's bounds-checking patches. If
> you want to use a patch
>  #			for an older gcc version with a new gcc,
> make sure you set
>  #			HTB_GCC_VER to that version of gcc.
> +#
> +#	CYGWINPORTS_GITREV
> +#			If set, this variable signals that we
> should apply additional patches
> +#			maintained by upstream Cygwin developers at
> github/cygwinports/gcc,
> +#			using the specified git commit id
> there.  The list of patches to
> +#			apply is extracted from gcc.cygport,
> maintained there as well.
> +#			This is done for compilers running on
> Cygwin, not for cross compilers
> +#			with a Cygwin target.
>  get_gcc_src_uri() {
>  	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
>  	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
> @@ -375,6 +383,10 @@ get_gcc_src_uri() {
>  		fi
>  	fi
>  
> +	# Cygwin patches from https://github.com/cygwinports/gcc
> +	[[ -n ${CYGWINPORTS_GITREV} ]] && \
> +		GCC_SRC_URI+=" elibc_Cygwin? (
> https://github.com/cygwinports/gcc/archive/${CYGWINPORTS_GITREV}.zip
> )"

Why not .tar.gz?

> +
>  	echo "${GCC_SRC_URI}"
>  }
>  
> @@ -481,6 +493,8 @@ gcc_quick_unpack() {
>  
>  	use_if_iuse boundschecking && unpack "bounds-checking-gcc-
> ${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
>  
> +	[[ -n ${CYGWINPORTS_GITREV} ]] && use elibc_Cygwin && unpack
> "${CYGWINPORTS_GITREV}.zip"
> +
>  	popd > /dev/null
>  }
>  
> @@ -505,6 +519,7 @@ toolchain_src_prepare() {
>  	fi
>  	do_gcc_HTB_patches
>  	do_gcc_PIE_patches
> +	do_gcc_CYGWINPORTS_patches
>  	epatch_user
>  
>  	if ( tc_version_is_at_least 4.8.2 || use_if_iuse hardened )
> && ! use vanilla ; then
> @@ -645,6 +660,19 @@ do_gcc_PIE_patches() {
>  	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-
> ${PIE_VER}"
>  }
>  
> +do_gcc_CYGWINPORTS_patches() {
> +	[[ -n ${CYGWINPORTS_GITREV} ]] || return 0
> +	use elibc_Cygwin || return 0
> +
> +	local p d="${WORKDIR}/gcc-${CYGWINPORTS_GITREV}"
> +	for p in $(
> +		eval "$(sed -ne '/PATCH_URI="/,/"/p' <
> "${d}"/gcc.cygport)"

The eval here is completely unnecessary, and can easily wreak havoc. 
Don't do that.

> +		echo ${PATCH_URI}
> +	); do
> +		epatch "${d}/${p}"
> +	done
> +}
> +
>  # configure to build with the hardened GCC specs as the default
>  make_gcc_hard() {
>  
-- 
Best regards,
Michał Górny

[gentoo-dev] Re: [PATCH 5/5] toolchain.eclass: support gcc patches from cygwinports

[Michael Haubenwallner]

On 06/20/2018 09:56 PM, Michał Górny wrote:
> W dniu śro, 20.06.2018 o godzinie 19∶49 +0200, użytkownik Michael
> Haubenwallner napisał:
>> Download and apply patches found in Cygwin's gcc.cygport, maintained
>> at
>> github/cygwinports/gcc, for a compiler running on cygwin.  The ebuild
>> can define the cygwinports' git commit id as CYGWINPORTS_GITREV.
>> ---
>>  eclass/toolchain.eclass | 28 ++++++++++++++++++++++++++++
>>  1 file changed, 28 insertions(+)
>>
>> diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
>> index faf96d2a41f..a16bfadc301 100644
>> --- a/eclass/toolchain.eclass
>> +++ b/eclass/toolchain.eclass
>> @@ -309,6 +309,14 @@ gentoo_urls() {
>>  #			ten Brugge's bounds-checking patches. If
>> you want to use a patch
>>  #			for an older gcc version with a new gcc,
>> make sure you set
>>  #			HTB_GCC_VER to that version of gcc.
>> +#
>> +#	CYGWINPORTS_GITREV
>> +#			If set, this variable signals that we
>> should apply additional patches
>> +#			maintained by upstream Cygwin developers at
>> github/cygwinports/gcc,
>> +#			using the specified git commit id
>> there.  The list of patches to
>> +#			apply is extracted from gcc.cygport,
>> maintained there as well.
>> +#			This is done for compilers running on
>> Cygwin, not for cross compilers
>> +#			with a Cygwin target.
>>  get_gcc_src_uri() {
>>  	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
>>  	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
>> @@ -375,6 +383,10 @@ get_gcc_src_uri() {
>>  		fi
>>  	fi
>>  
>> +	# Cygwin patches from https://github.com/cygwinports/gcc
>> +	[[ -n ${CYGWINPORTS_GITREV} ]] && \
>> +		GCC_SRC_URI+=" elibc_Cygwin? (
>> https://github.com/cygwinports/gcc/archive/${CYGWINPORTS_GITREV}.zip
>> )"
> 
> Why not .tar.gz?

Didn't know .tar.gz works - the webpage provides [Download ZIP] only, thanks!

> 
>> +
>>  	echo "${GCC_SRC_URI}"
>>  }
>>  
>> @@ -481,6 +493,8 @@ gcc_quick_unpack() {
>>  
>>  	use_if_iuse boundschecking && unpack "bounds-checking-gcc-
>> ${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
>>  
>> +	[[ -n ${CYGWINPORTS_GITREV} ]] && use elibc_Cygwin && unpack
>> "${CYGWINPORTS_GITREV}.zip"
>> +
>>  	popd > /dev/null
>>  }
>>  
>> @@ -505,6 +519,7 @@ toolchain_src_prepare() {
>>  	fi
>>  	do_gcc_HTB_patches
>>  	do_gcc_PIE_patches
>> +	do_gcc_CYGWINPORTS_patches
>>  	epatch_user
>>  
>>  	if ( tc_version_is_at_least 4.8.2 || use_if_iuse hardened )
>> && ! use vanilla ; then
>> @@ -645,6 +660,19 @@ do_gcc_PIE_patches() {
>>  	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-
>> ${PIE_VER}"
>>  }
>>  
>> +do_gcc_CYGWINPORTS_patches() {
>> +	[[ -n ${CYGWINPORTS_GITREV} ]] || return 0
>> +	use elibc_Cygwin || return 0
>> +
>> +	local p d="${WORKDIR}/gcc-${CYGWINPORTS_GITREV}"
>> +	for p in $(
>> +		eval "$(sed -ne '/PATCH_URI="/,/"/p' <
>> "${d}"/gcc.cygport)"
> 
> The eval here is completely unnecessary, and can easily wreak havoc. 
> Don't do that.

Erm - multiline commands from $() seem to fail without eval:

# sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport
PATCH_URI="
0001-share-mingw-fset-stack-executable-with-cygwin.patch
...
"

# $(sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport)
-bash: PATCH_URI=": command not found

# eval "$(sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport)"

# declare -p PATCH_URI
declare -- PATCH_URI="
0001-share-mingw-fset-stack-executable-with-cygwin.patch
...
"

/haubi/

Re: [gentoo-dev] Re: [PATCH 5/5] toolchain.eclass: support gcc patches from cygwinports

[Michał Górny]

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W dniu pią, 22.06.2018 o godzinie 13∶22 +0200, użytkownik Michael
Haubenwallner napisał:
> On 06/20/2018 09:56 PM, Michał Górny wrote:
> > W dniu śro, 20.06.2018 o godzinie 19∶49 +0200, użytkownik Michael
> > Haubenwallner napisał:
> > > Download and apply patches found in Cygwin's gcc.cygport, maintained
> > > at
> > > github/cygwinports/gcc, for a compiler running on cygwin.  The ebuild
> > > can define the cygwinports' git commit id as CYGWINPORTS_GITREV.
> > > ---
> > >  eclass/toolchain.eclass | 28 ++++++++++++++++++++++++++++
> > >  1 file changed, 28 insertions(+)
> > > 
> > > diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
> > > index faf96d2a41f..a16bfadc301 100644
> > > --- a/eclass/toolchain.eclass
> > > +++ b/eclass/toolchain.eclass
> > > @@ -309,6 +309,14 @@ gentoo_urls() {
> > >  #			ten Brugge's bounds-checking patches. If
> > > you want to use a patch
> > >  #			for an older gcc version with a new gcc,
> > > make sure you set
> > >  #			HTB_GCC_VER to that version of gcc.
> > > +#
> > > +#	CYGWINPORTS_GITREV
> > > +#			If set, this variable signals that we
> > > should apply additional patches
> > > +#			maintained by upstream Cygwin developers at
> > > github/cygwinports/gcc,
> > > +#			using the specified git commit id
> > > there.  The list of patches to
> > > +#			apply is extracted from gcc.cygport,
> > > maintained there as well.
> > > +#			This is done for compilers running on
> > > Cygwin, not for cross compilers
> > > +#			with a Cygwin target.
> > >  get_gcc_src_uri() {
> > >  	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
> > >  	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
> > > @@ -375,6 +383,10 @@ get_gcc_src_uri() {
> > >  		fi
> > >  	fi
> > >  
> > > +	# Cygwin patches from https://github.com/cygwinports/gcc
> > > +	[[ -n ${CYGWINPORTS_GITREV} ]] && \
> > > +		GCC_SRC_URI+=" elibc_Cygwin? (
> > > https://github.com/cygwinports/gcc/archive/${CYGWINPORTS_GITREV}.zip
> > > )"
> > 
> > Why not .tar.gz?
> 
> Didn't know .tar.gz works - the webpage provides [Download ZIP] only, thanks!
> 
> > 
> > > +
> > >  	echo "${GCC_SRC_URI}"
> > >  }
> > >  
> > > @@ -481,6 +493,8 @@ gcc_quick_unpack() {
> > >  
> > >  	use_if_iuse boundschecking && unpack "bounds-checking-gcc-
> > > ${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
> > >  
> > > +	[[ -n ${CYGWINPORTS_GITREV} ]] && use elibc_Cygwin && unpack
> > > "${CYGWINPORTS_GITREV}.zip"
> > > +
> > >  	popd > /dev/null
> > >  }
> > >  
> > > @@ -505,6 +519,7 @@ toolchain_src_prepare() {
> > >  	fi
> > >  	do_gcc_HTB_patches
> > >  	do_gcc_PIE_patches
> > > +	do_gcc_CYGWINPORTS_patches
> > >  	epatch_user
> > >  
> > >  	if ( tc_version_is_at_least 4.8.2 || use_if_iuse hardened )
> > > && ! use vanilla ; then
> > > @@ -645,6 +660,19 @@ do_gcc_PIE_patches() {
> > >  	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-
> > > ${PIE_VER}"
> > >  }
> > >  
> > > +do_gcc_CYGWINPORTS_patches() {
> > > +	[[ -n ${CYGWINPORTS_GITREV} ]] || return 0
> > > +	use elibc_Cygwin || return 0
> > > +
> > > +	local p d="${WORKDIR}/gcc-${CYGWINPORTS_GITREV}"
> > > +	for p in $(
> > > +		eval "$(sed -ne '/PATCH_URI="/,/"/p' <
> > > "${d}"/gcc.cygport)"
> > 
> > The eval here is completely unnecessary, and can easily wreak havoc. 
> > Don't do that.
> 
> Erm - multiline commands from $() seem to fail without eval:
> 
> # sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport
> PATCH_URI="
> 0001-share-mingw-fset-stack-executable-with-cygwin.patch
> ...
> "
> 
> # $(sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport)
> -bash: PATCH_URI=": command not found
> 
> # eval "$(sed -ne '/PATCH_URI="/,/"/p' < ./gcc.cygport)"
> 
> # declare -p PATCH_URI
> declare -- PATCH_URI="
> 0001-share-mingw-fset-stack-executable-with-cygwin.patch
> ...
> "
> 

It's not very hard if you try to find another solution to the problem
rather than trying to force your solution to work without eval.

For example:

local patches=()
readarray -t patches < <(sed -e '1,/PATCH_URI="/d;/"/,$d' < gcc.cygport)

-- 
Best regards,
Michał Górny

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[gentoo-dev] Re: [PATCH 0/5] toolchain.eclass: Prefix patches, Cygwin related

[Michael Haubenwallner]

On 06/20/2018 07:49 PM, Michael Haubenwallner wrote:
> Hi,
> 
> please review these patches we have in prefix-overlay,
> where patches 3-5 are for Gentoo Prefix on Cygwin.

Thanks for the reviews, will reorder to account for EAPI 7 paths first.

One minor thing still unclear to me, beyond no _leading_ double slash:
Do we try hard to avoid redundant slashes _in between_ too?

Thoughts behind this question:
Beyond the eventual trailing slash, the {,E,SYS,ESYS,B}ROOT variables
may be empty, so Cygwin really requires the ${%/} modifier for them
to not end up with a network location by accident (in EAPI before 7).

But D,ED are not expected to be empty, and the ${%/} modifier will avoid
an extra slash _in between_ only, not a leading one.

So with D,ED the ${%/} modifier feels needless, reducing readability only.

Just wondering if we have some guidance here,
/haubi/