[Buildroot] [PATCH] package/swipl: fix build without C++ compiler

[Buildroot] [PATCH] package/swipl: fix build without C++ compiler

[Peter Korsgaard]

Fixes http://autobuild.buildroot.net/results/b24a96b999676990995a466686fe1eacf6cddfef

Some of the optional packages in swipl are written in C++, so CMake thinks a
C++ compiler is needed even though we build with -DSWIPL_PACKAGES=OFF.  Add
-DCMAKE_CXX_COMPILER=true to satisfy this check even in setups without C++:

-- Check for working CXX compiler: /usr/bin/true
-- Check for working CXX compiler: /usr/bin/true - works

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/swipl/swipl.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/swipl/swipl.mk b/package/swipl/swipl.mk
index ef9aedcd2d..e29b8d8f46 100644
--- a/package/swipl/swipl.mk
+++ b/package/swipl/swipl.mk
@@ -36,7 +36,8 @@ SWIPL_CONF_OPTS = \
 	-DQSORT_R_GNU=1 \
 	-DSWIPL_NATIVE_FRIEND=$(HOST_SWIPL_SRCDIR) \
 	-DSWIPL_PACKAGES=OFF \
-	-DUSE_TCMALLOC=OFF
+	-DUSE_TCMALLOC=OFF \
+	-DCMAKE_CXX_COMPILER=true
 
 ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
 SWIPL_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic
-- 
2.39.5

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Re: [Buildroot] [PATCH] package/swipl: fix build without C++ compiler

[Thomas Petazzoni]

On Wed,  5 Feb 2025 12:26:18 +0100
Peter Korsgaard <peter@korsgaard.com> wrote:

> Fixes http://autobuild.buildroot.net/results/b24a96b999676990995a466686fe1eacf6cddfef
> 
> Some of the optional packages in swipl are written in C++, so CMake thinks a
> C++ compiler is needed even though we build with -DSWIPL_PACKAGES=OFF.  Add
> -DCMAKE_CXX_COMPILER=true to satisfy this check even in setups without C++:
> 
> -- Check for working CXX compiler: /usr/bin/true
> -- Check for working CXX compiler: /usr/bin/true - works
> 
> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
> ---
>  package/swipl/swipl.mk | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Thanks, but you need to specify since when this problem started
occurring, so that whoever is going to evaluate this patch for backport
to our LTS branch will know what to do :-)

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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Re: [Buildroot] [PATCH] package/swipl: fix build without C++ compiler

[Peter Korsgaard]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@bootlin.com> writes:

 > On Wed,  5 Feb 2025 12:26:18 +0100
 > Peter Korsgaard <peter@korsgaard.com> wrote:

 >> Fixes http://autobuild.buildroot.net/results/b24a96b999676990995a466686fe1eacf6cddfef
 >> 
 >> Some of the optional packages in swipl are written in C++, so CMake thinks a
 >> C++ compiler is needed even though we build with -DSWIPL_PACKAGES=OFF.  Add
 >> -DCMAKE_CXX_COMPILER=true to satisfy this check even in setups without C++:
 >> 
 >> -- Check for working CXX compiler: /usr/bin/true
 >> -- Check for working CXX compiler: /usr/bin/true - works
 >> 
 >> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
 >> ---
 >> package/swipl/swipl.mk | 3 ++-
 >> 1 file changed, 2 insertions(+), 1 deletion(-)

 > Thanks, but you need to specify since when this problem started
 > occurring, so that whoever is going to evaluate this patch for backport
 > to our LTS branch will know what to do :-)

Argh, will resend.

-- 
Bye, Peter Korsgaard
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