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package/meson: fix cpu_family format

PATCH New james.hilliard1 at gmail.com 2 participants 6 messages Dec 16, 2018 – Dec 26, 2018 Arm/Amlogic Meson SoC support

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#0 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

---
Changes v1 -> v2:
- change riscv to 64 bit

Changes v2 -> v3:
- combine HOST_MESON_TARGET_CPU_FAMILY archs

---
 package/meson/cross-compilation.conf.in |  1 +
 package/meson/meson.mk                  | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)
package/meson/cross-compilation.conf.in +1 -0
index 0eec740..fc8e27f 100644
@@ -11,6 +11,7 @@ strip = '@TARGET_CROSS at strip'
 pkgconfig = '@HOST_DIR@/usr/bin/pkg-config'
 
 [properties]
+needs_exe_wrapper = true
 c_args = [@TARGET_CFLAGS@]
 c_link_args = [@TARGET_LDFLAGS@]
 cpp_args = [@TARGET_CXXFLAGS@]
package/meson/meson.mk +30 -1
index e1675c2..1113bf0 100644
@@ -16,6 +16,35 @@ HOST_MESON_NEEDS_HOST_PYTHON = python3
 HOST_MESON_TARGET_ENDIAN = $(call LOWERCASE,$(BR2_ENDIAN))
 HOST_MESON_TARGET_CPU = $(GCC_TARGET_CPU)
 
+# https://mesonbuild.com/Reference-tables.html#cpu-families
+ifeq ($(BR2_arcle)$(BR2_arceb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arc
+else ifeq ($(BR2_arm)$(BR2_armeb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arm
+else ifeq ($(BR2_aarch64)$(BR2_aarch64_be),y)
+HOST_MESON_TARGET_CPU_FAMILY = aarch64
+else ifeq ($(BR2_i386),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86
+else ifeq ($(BR2_mips)$(BR2_mipsel),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips
+else ifeq ($(BR2_mips64)$(BR2_mips64el),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips64
+else ifeq ($(BR2_powerpc),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc
+else ifeq ($(BR2_powerpc64)$(BR2_powerpc64le),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc64
+else ifeq ($(BR2_riscv),y)
+HOST_MESON_TARGET_CPU_FAMILY = riscv64
+else ifeq ($(BR2_sparc),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc
+else ifeq ($(BR2_sparc64),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc64
+else ifeq ($(BR2_x86_64),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86_64
+else
+HOST_MESON_TARGET_CPU_FAMILY = $(ARCH)
+endif
+
 HOST_MESON_SED_CFLAGS = $(if $(TARGET_CFLAGS),`printf '"%s"$(comma) ' $(TARGET_CFLAGS)`)
 HOST_MESON_SED_LDFLAGS = $(if $(TARGET_LDFLAGS),`printf '"%s"$(comma) ' $(TARGET_LDFLAGS)`)
 HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARGET_CXXFLAGS)`)
@@ -23,7 +52,7 @@ HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARG
 define HOST_MESON_INSTALL_CROSS_CONF
 	mkdir -p $(HOST_DIR)/etc/meson
 	sed -e "s%@TARGET_CROSS@%$(TARGET_CROSS)%g" \
-	    -e "s%@TARGET_ARCH@%$(ARCH)%g" \
+	    -e "s%@TARGET_ARCH@%$(HOST_MESON_TARGET_CPU_FAMILY)%g" \
 	    -e "s%@TARGET_CPU@%$(HOST_MESON_TARGET_CPU)%g" \
 	    -e "s%@TARGET_ENDIAN@%$(HOST_MESON_TARGET_ENDIAN)%g" \
 	    -e "s%@TARGET_CFLAGS@%$(HOST_MESON_SED_CFLAGS)%g" \
Signature · 1 line
2.7.4
#1 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

James, All,

On 2018-12-17 07:14 +0800, james.hilliard1 at gmail.com spake thusly:

Quoted 5 lines

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

As explained in:
https://mesonbuild.com/Reference-tables.html#cpu-families

Quoted 2 lines

We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

As explained in:
https://mesonbuild.com/Cross-compilation.html

Regards,
Yann E. MORIN.

Quoted 80 lines

---
Changes v1 -> v2:
- change riscv to 64 bit

Changes v2 -> v3:
- combine HOST_MESON_TARGET_CPU_FAMILY archs

---
 package/meson/cross-compilation.conf.in |  1 +
 package/meson/meson.mk                  | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)
package/meson/cross-compilation.conf.in +1 -0
index 0eec740..fc8e27f 100644
@@ -11,6 +11,7 @@ strip = '@TARGET_CROSS at strip'
 pkgconfig = '@HOST_DIR@/usr/bin/pkg-config'
 
 [properties]
+needs_exe_wrapper = true
 c_args = [@TARGET_CFLAGS@]
 c_link_args = [@TARGET_LDFLAGS@]
 cpp_args = [@TARGET_CXXFLAGS@]
package/meson/meson.mk +30 -1
index e1675c2..1113bf0 100644
@@ -16,6 +16,35 @@ HOST_MESON_NEEDS_HOST_PYTHON = python3
 HOST_MESON_TARGET_ENDIAN = $(call LOWERCASE,$(BR2_ENDIAN))
 HOST_MESON_TARGET_CPU = $(GCC_TARGET_CPU)
 
+# https://mesonbuild.com/Reference-tables.html#cpu-families
+ifeq ($(BR2_arcle)$(BR2_arceb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arc
+else ifeq ($(BR2_arm)$(BR2_armeb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arm
+else ifeq ($(BR2_aarch64)$(BR2_aarch64_be),y)
+HOST_MESON_TARGET_CPU_FAMILY = aarch64
+else ifeq ($(BR2_i386),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86
+else ifeq ($(BR2_mips)$(BR2_mipsel),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips
+else ifeq ($(BR2_mips64)$(BR2_mips64el),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips64
+else ifeq ($(BR2_powerpc),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc
+else ifeq ($(BR2_powerpc64)$(BR2_powerpc64le),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc64
+else ifeq ($(BR2_riscv),y)
+HOST_MESON_TARGET_CPU_FAMILY = riscv64
+else ifeq ($(BR2_sparc),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc
+else ifeq ($(BR2_sparc64),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc64
+else ifeq ($(BR2_x86_64),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86_64
+else
+HOST_MESON_TARGET_CPU_FAMILY = $(ARCH)
+endif
+
 HOST_MESON_SED_CFLAGS = $(if $(TARGET_CFLAGS),`printf '"%s"$(comma) ' $(TARGET_CFLAGS)`)
 HOST_MESON_SED_LDFLAGS = $(if $(TARGET_LDFLAGS),`printf '"%s"$(comma) ' $(TARGET_LDFLAGS)`)
 HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARGET_CXXFLAGS)`)
@@ -23,7 +52,7 @@ HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARG
 define HOST_MESON_INSTALL_CROSS_CONF
 	mkdir -p $(HOST_DIR)/etc/meson
 	sed -e "s%@TARGET_CROSS@%$(TARGET_CROSS)%g" \
-	    -e "s%@TARGET_ARCH@%$(ARCH)%g" \
+	    -e "s%@TARGET_ARCH@%$(HOST_MESON_TARGET_CPU_FAMILY)%g" \
 	    -e "s%@TARGET_CPU@%$(HOST_MESON_TARGET_CPU)%g" \
 	    -e "s%@TARGET_ENDIAN@%$(HOST_MESON_TARGET_ENDIAN)%g" \
 	    -e "s%@TARGET_CFLAGS@%$(HOST_MESON_SED_CFLAGS)%g" \
Signature · 6 lines
2.7.4

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot
Signature · 6 lines
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'
#2 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

James, All,

On 2018-12-25 19:56 +0100, Yann E. MORIN spake thusly:

Quoted 10 lines

On 2018-12-17 07:14 +0800, james.hilliard1 at gmail.com spake thusly:

Quoted 5 lines

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

As explained in:
https://mesonbuild.com/Reference-tables.html#cpu-families

Quoted 7 lines
Quoted 2 lines

We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

As explained in:
https://mesonbuild.com/Cross-compilation.html

Well, now I think this should have really been two patches, like Thomas initially suggested:

1- prevent meson from ever thinking it can run what it builds, and so
add needs_exe_wrapper on its own, because we may already have that situation today (e.g. x86_64 targetting x86_64)

2- add the CPU fix on a second patch, which can safely be applied now
that meson will never try to run what it builds.

Besides, you forgot, in your systemd-boot series, to specify that this patch was required first. But I'll reply further in that series...

Regards,
Yann E. MORIN.

Quoted 95 lines

Regards,
Yann E. MORIN.

Quoted 80 lines

---
Changes v1 -> v2:
- change riscv to 64 bit

Changes v2 -> v3:
- combine HOST_MESON_TARGET_CPU_FAMILY archs

---
 package/meson/cross-compilation.conf.in |  1 +
 package/meson/meson.mk                  | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)
package/meson/cross-compilation.conf.in +1 -0
index 0eec740..fc8e27f 100644
@@ -11,6 +11,7 @@ strip = '@TARGET_CROSS at strip'
 pkgconfig = '@HOST_DIR@/usr/bin/pkg-config'
 
 [properties]
+needs_exe_wrapper = true
 c_args = [@TARGET_CFLAGS@]
 c_link_args = [@TARGET_LDFLAGS@]
 cpp_args = [@TARGET_CXXFLAGS@]
package/meson/meson.mk +30 -1
index e1675c2..1113bf0 100644
@@ -16,6 +16,35 @@ HOST_MESON_NEEDS_HOST_PYTHON = python3
 HOST_MESON_TARGET_ENDIAN = $(call LOWERCASE,$(BR2_ENDIAN))
 HOST_MESON_TARGET_CPU = $(GCC_TARGET_CPU)
 
+# https://mesonbuild.com/Reference-tables.html#cpu-families
+ifeq ($(BR2_arcle)$(BR2_arceb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arc
+else ifeq ($(BR2_arm)$(BR2_armeb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arm
+else ifeq ($(BR2_aarch64)$(BR2_aarch64_be),y)
+HOST_MESON_TARGET_CPU_FAMILY = aarch64
+else ifeq ($(BR2_i386),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86
+else ifeq ($(BR2_mips)$(BR2_mipsel),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips
+else ifeq ($(BR2_mips64)$(BR2_mips64el),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips64
+else ifeq ($(BR2_powerpc),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc
+else ifeq ($(BR2_powerpc64)$(BR2_powerpc64le),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc64
+else ifeq ($(BR2_riscv),y)
+HOST_MESON_TARGET_CPU_FAMILY = riscv64
+else ifeq ($(BR2_sparc),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc
+else ifeq ($(BR2_sparc64),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc64
+else ifeq ($(BR2_x86_64),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86_64
+else
+HOST_MESON_TARGET_CPU_FAMILY = $(ARCH)
+endif
+
 HOST_MESON_SED_CFLAGS = $(if $(TARGET_CFLAGS),`printf '"%s"$(comma) ' $(TARGET_CFLAGS)`)
 HOST_MESON_SED_LDFLAGS = $(if $(TARGET_LDFLAGS),`printf '"%s"$(comma) ' $(TARGET_LDFLAGS)`)
 HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARGET_CXXFLAGS)`)
@@ -23,7 +52,7 @@ HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARG
 define HOST_MESON_INSTALL_CROSS_CONF
 	mkdir -p $(HOST_DIR)/etc/meson
 	sed -e "s%@TARGET_CROSS@%$(TARGET_CROSS)%g" \
-	    -e "s%@TARGET_ARCH@%$(ARCH)%g" \
+	    -e "s%@TARGET_ARCH@%$(HOST_MESON_TARGET_CPU_FAMILY)%g" \
 	    -e "s%@TARGET_CPU@%$(HOST_MESON_TARGET_CPU)%g" \
 	    -e "s%@TARGET_ENDIAN@%$(HOST_MESON_TARGET_ENDIAN)%g" \
 	    -e "s%@TARGET_CFLAGS@%$(HOST_MESON_SED_CFLAGS)%g" \
Signature · 6 lines
2.7.4

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot
Signature · 10 lines
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'
_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot
Signature · 6 lines
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'
#3 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

Quoted 20 lines · Yann E. MORIN

James, All,

On 2018-12-25 19:56 +0100, Yann E. MORIN spake thusly:

Quoted 16 lines

On 2018-12-17 07:14 +0800, james.hilliard1 at gmail.com spake thusly:

Quoted 5 lines

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

As explained in:
https://mesonbuild.com/Reference-tables.html#cpu-families

Quoted 2 lines

We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

As explained in:
https://mesonbuild.com/Cross-compilation.html

Quoted 8 lines
Quoted 1 line

Well, now I think this should have really been two patches, like Thomas initially suggested:

1- prevent meson from ever thinking it can run what it builds, and so
add needs_exe_wrapper on its own, because we may already have that situation today (e.g. x86_64 targetting x86_64)

We actually never get that issue right now AFAICT because we are setting the wrong cpu_family so the host target comparison always fails to match.

Quoted 113 lines

2- add the CPU fix on a second patch, which can safely be applied now
that meson will never try to run what it builds.

Besides, you forgot, in your systemd-boot series, to specify that this patch was required first. But I'll reply further in that series...

Regards,
Yann E. MORIN.

Quoted 90 lines

Regards,
Yann E. MORIN.

Quoted 76 lines

---
Changes v1 -> v2:
- change riscv to 64 bit

Changes v2 -> v3:
- combine HOST_MESON_TARGET_CPU_FAMILY archs

---
 package/meson/cross-compilation.conf.in |  1 +
 package/meson/meson.mk                  | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)
package/meson/cross-compilation.conf.in +1 -0
index 0eec740..fc8e27f 100644
@@ -11,6 +11,7 @@ strip = '@TARGET_CROSS at strip'
 pkgconfig = '@HOST_DIR@/usr/bin/pkg-config'
 
 [properties]
+needs_exe_wrapper = true
 c_args = [@TARGET_CFLAGS@]
 c_link_args = [@TARGET_LDFLAGS@]
 cpp_args = [@TARGET_CXXFLAGS@]
package/meson/meson.mk +30 -2
index e1675c2..1113bf0 100644
@@ -16,6 +16,35 @@ HOST_MESON_NEEDS_HOST_PYTHON = python3
 HOST_MESON_TARGET_ENDIAN = $(call LOWERCASE,$(BR2_ENDIAN))
 HOST_MESON_TARGET_CPU = $(GCC_TARGET_CPU)
 
+# https://mesonbuild.com/Reference-tables.html#cpu-families
+ifeq ($(BR2_arcle)$(BR2_arceb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arc
+else ifeq ($(BR2_arm)$(BR2_armeb),y)
+HOST_MESON_TARGET_CPU_FAMILY = arm
+else ifeq ($(BR2_aarch64)$(BR2_aarch64_be),y)
+HOST_MESON_TARGET_CPU_FAMILY = aarch64
+else ifeq ($(BR2_i386),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86
+else ifeq ($(BR2_mips)$(BR2_mipsel),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips
+else ifeq ($(BR2_mips64)$(BR2_mips64el),y)
+HOST_MESON_TARGET_CPU_FAMILY = mips64
+else ifeq ($(BR2_powerpc),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc
+else ifeq ($(BR2_powerpc64)$(BR2_powerpc64le),y)
+HOST_MESON_TARGET_CPU_FAMILY = ppc64
+else ifeq ($(BR2_riscv),y)
+HOST_MESON_TARGET_CPU_FAMILY = riscv64
+else ifeq ($(BR2_sparc),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc
+else ifeq ($(BR2_sparc64),y)
+HOST_MESON_TARGET_CPU_FAMILY = sparc64
+else ifeq ($(BR2_x86_64),y)
+HOST_MESON_TARGET_CPU_FAMILY = x86_64
+else
+HOST_MESON_TARGET_CPU_FAMILY = $(ARCH)
+endif
+
 HOST_MESON_SED_CFLAGS = $(if $(TARGET_CFLAGS),`printf '"%s"$(comma) ' $(TARGET_CFLAGS)`)
 HOST_MESON_SED_LDFLAGS = $(if $(TARGET_LDFLAGS),`printf '"%s"$(comma) ' $(TARGET_LDFLAGS)`)
 HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARGET_CXXFLAGS)`)
@@ -23,7 +52,7 @@ HOST_MESON_SED_CXXFLAGS = $(if $(TARGET_CXXFLAGS),`printf '"%s"$(comma) ' $(TARG
 define HOST_MESON_INSTALL_CROSS_CONF
    mkdir -p $(HOST_DIR)/etc/meson
    sed -e "s%@TARGET_CROSS@%$(TARGET_CROSS)%g" \
-       -e "s%@TARGET_ARCH@%$(ARCH)%g" \
+       -e "s%@TARGET_ARCH@%$(HOST_MESON_TARGET_CPU_FAMILY)%g" \
        -e "s%@TARGET_CPU@%$(HOST_MESON_TARGET_CPU)%g" \
        -e "s%@TARGET_ENDIAN@%$(HOST_MESON_TARGET_ENDIAN)%g" \
        -e "s%@TARGET_CFLAGS@%$(HOST_MESON_SED_CFLAGS)%g" \
--

2.7.4

Quoted 4 lines

_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

--
.-----------------.--------------------.------------------.--------------------.

|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
Quoted 5 lines

'------------------------------^-------^------------------^--------------------'
_______________________________________________
buildroot mailing list
buildroot at busybox.net
http://lists.busybox.net/mailman/listinfo/buildroot

--
.-----------------.--------------------.------------------.--------------------.

|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |

'------------------------------^-------^------------------^--------------------'

#4 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

James, All,

On 2018-12-26 02:34 -0600, James Hilliard spake thusly:

Quoted 23 lines · Yann E. MORIN
Quoted 22 lines

On 2018-12-25 19:56 +0100, Yann E. MORIN spake thusly:

Quoted 10 lines

On 2018-12-17 07:14 +0800, james.hilliard1 at gmail.com spake thusly:

Quoted 5 lines

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

As explained in:
https://mesonbuild.com/Reference-tables.html#cpu-families

Quoted 7 lines
Quoted 2 lines

We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

As explained in:
https://mesonbuild.com/Cross-compilation.html

Well, now I think this should have really been two patches, like Thomas initially suggested:

Quoted 6 lines
Quoted 3 lines

1- prevent meson from ever thinking it can run what it builds, and so
add needs_exe_wrapper on its own, because we may already have that situation today (e.g. x86_64 targetting x86_64)

We actually never get that issue right now AFAICT because we are setting the wrong cpu_family so the host target comparison always fails to match.

But for x86_64, we currently do pass the correct value 'x86_64', so the comparison does not fail when both the host and target are x86_64.

And since meson only uses the CPU familly name and the 'system' name to decide, and that the 'system' name is linux in both cases, then we do have the issue currently, even if it never got triggered yet.

Regards,
Yann E. MORIN.

Signature · 6 lines
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'
#5 lore raw

PATCH v3 1/1 package/meson: fix cpu_family format

Quoted 30 lines · Yann E. MORIN

James, All,

On 2018-12-26 02:34 -0600, James Hilliard spake thusly:

Quoted 26 lines · Yann E. MORIN
Quoted 25 lines

On 2018-12-25 19:56 +0100, Yann E. MORIN spake thusly:

Quoted 10 lines

On 2018-12-17 07:14 +0800, james.hilliard1 at gmail.com spake thusly:

Quoted 5 lines

From: James Hilliard <[email protected]>

Meson expects the cpu_family to be in a specific format for cross compilation, otherwise packages that use cpu_family detection may fail to build.

As explained in:
https://mesonbuild.com/Reference-tables.html#cpu-families

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We also need to set needs_exe_wrapper = true to ensure that meson won't try and execute test binaries.

As explained in:
https://mesonbuild.com/Cross-compilation.html

Well, now I think this should have really been two patches, like Thomas initially suggested:

1- prevent meson from ever thinking it can run what it builds, and so
add needs_exe_wrapper on its own, because we may already have that situation today (e.g. x86_64 targetting x86_64)

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We actually never get that issue right now AFAICT because we are setting the wrong cpu_family so the host target comparison always fails to match.

But for x86_64, we currently do pass the correct value 'x86_64', so the comparison does not fail when both the host and target are x86_64.

Ah, you're right, it's not an issue currently for x86_64 in that case since the tests do succeed for x86_64(I tested this just now), the failure happens for 32 bit x86 since meson incorrectly thinks it can run x86 test binaries on x86_64. So fixing cpu_family without the exe wrapper fix probably only causes regular x86 builds to fail. The x86 cpu_family was definitely incorrect so that's why the comparison would fail and the build would succeed.

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And since meson only uses the CPU familly name and the 'system' name to decide, and that the 'system' name is linux in both cases, then we do have the issue currently, even if it never got triggered yet.

Regards,
Yann E. MORIN.

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