Hi Waldemar,

Except from meeting all dependencies (especially overwriting OS X tools with GNU versions) I did use these steps to setup my Entware-ng environment:

1. A case-sensitive filesystem is required for OpenWrt so I guess Entware-ng will need one too. Create the image in 2 steps to prevent EFI partition creation (for volumes over 2g). $ hdiutil create -size 512m -type SPARSEBUNDLE -fs "Case-sensitive HFS+" -volname Case-sensitive ~/src/Case-sensitive && hdiutil resize -size 38g ~/src/Case-sensitive.sparsebundle

2. Mount the image and hide it from Finder and Desktop $ hdiutil attach ~/src/Case-sensitive.sparseimage -nobrowse

3. Go to the case sensitive location $ cd /Volumes/Case-sensitive

4. Download Entware-ng sources $ git clone https://github.com/Entware-ng/Entware-ng.git

5. Go to the root folder $ cd Entware-ng

6. Pick up the configuration for the mipselsf (mips, little endian, soft floating point) platform $ cp configs/mipselsf.config .config

6. Prepared the necessary fixes. $ make

For now I think the issue is after:

make[3]: Entering directory `/Volumes/Case-sensitive/Entware-ng/toolchain/uClibc/headers'

in this incomplete Make call:

make -C build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-ng-1.0.16 ... -I../..//extra/locale

A result the incorrect (FreeBSD) version of ‘langinfo.h’ at /usr/include/langinfo.h is used. $ gcc -M build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-ng-1.0.16/extra/locale/gen_locale.c | grep langinfo /usr/include/locale.h /usr/include/_locale.h /usr/include/langinfo.h \

To let the compiler find the correct ‘langinfo.h’ something/somewhere needs f.e. an addition like:

-I../../include

Note: This is my guess without any knowledge of how the compiler handles preferences of include locations

-- Best regards, Ceriel

Op 21 nov. 2016, om 13:53 heeft Waldemar Brodkorb wbx@uclibc-ng.org het volgende geschreven:

Hi Ceriel, C. Jacobs wrote,

...

Hi list and Waldemar,

Yes, I am trying to cross-compile on Mac OS X for Linux embedded (mipselsf) devices, within the Entware-ng environment.

I did search for “BR2_ENABLE_LOCALE”, “BR2_USE_WCHAR”, “BR2_TOOLCHAIN_BUILDROOT_LOCALE”, “BR2_TOOLCHAIN_BUILDROOT_WCHAR”, “BR2_ENABLE_LOCALE" in the Entware-ng folder (like $ grep -lr "BR2_ENABLE_LOCALE” *) without any results.

How can I disable LOCALE support?

...

But the locale support in uClibc-ng is really crappy and it assumes a Linux host for some tools running on the host.

I do still think that the issue here are that the headers (langinfo.h) can’t be found.

Is that more an issue of “toolchain” or of “uClibc-ng"?

A combination of your host toolchain and uClibc-ng. The code in gen_locale.c is using headers which are not provided by your host toolchain. They might be non-posix, I don't know. I seldom use locale support in uClibc-ng, but if you want to work on better cross-compilation in this area, I would accept patches.

Where does someone could download the entware-ng you are using, I could take a look. Check the provided uClibc config, it might enable LOCALE, without a switch in the Buildroot-Clone.

best regards Waldemar

Hi,

Thank you for CONFIG_BUILD_NLS in .config.

Entware-ng make (on OS X) now bumps over the toolchain/uClibc/headers (which in fact is uClibc-ng-1.0.16) section: ... make[3] -C toolchain/kernel-headers install make[3] -C toolchain/uClibc/headers prepare make[3] -C toolchain/uClibc/headers compile make[3] -C toolchain/uClibc/headers install make[3] -C toolchain/gcc/initial prepare ...

I still would like to learn.

Where is the hook (read: correct location) to insert an additional include (-I../../include) property for the "toolchain/uClibc/headers install” phase?

And/or where does the for

make -C extra/locale locale_headers gcc ../../extra/locale/gen_locale.c -o ../..//extra/locale/gen_locale

added

-I../..//extra/locale

derives from?

-- kind regards, ~Ceriel

Op 21 nov. 2016, om 14:43 heeft Waldemar Brodkorb wbx@uclibc-ng.org het volgende geschreven:

Okay, I see. It is an modified OpenWrt. Disable CONFIG_BUILD_NLS in your .config.

best regards Waldemar

Hi Waldemar,

After editing toolchain/uClibc/headers/Makefile:

$ cat toolchain/uClibc/headers/Makefile | grep UCLIBC_EXTRA_CFLAGS -a9

define Host/Install PATH='$(TARGET_PATH)' $(MAKE) -C $(HOST_BUILD_DIR) \ PREFIX="$(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev/" \ DEVEL_PREFIX=/ \ RUNTIME_PREFIX="$(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev/" \ HOSTCC="$(HOSTCC)" \ CC="$(TARGET_CC)" \ CPU_CFLAGS="$(TARGET_CFLAGS)" \ UCLIBC_EXTRA_CFLAGS=" -I../../include" \ ARCH="$(CONFIG_ARCH)" \ pregen \ install_headers endef

$(eval $(call HostBuild))

issuing “$ make clean", and run “$ make" again, I see the flag, but the “make” output is still stopping with the error:

make -C /Volumes/Case-sensitive/Entware-ng/build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-ng-1.0.16 PREFIX="/Volumes/Case-sensitive/Entware-ng/build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-dev/" DEVEL_PREFIX=/ RUNTIME_PREFIX="/Volumes/Case-sensitive/Entware-ng/build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-dev/" HOSTCC="gcc" CC="mipsel-openwrt-linux-uclibc-gcc" CPU_CFLAGS="-O2 -pipe -mno-branch-likely -mips32r2 -mtune=mips32r2 -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -msoft-float" UCLIBC_EXTRA_CFLAGS=" -I../../include" ARCH=""mipsel"" pregen install_headers

However the Makefile result at /Volumes/Case-sensitive/Entware-ng/build_dir/toolchain-mipsel_mips32r2_gcc-5.3.0_uClibc-1.0.16/uClibc-ng-1.0.16/extra/locale, is missing this -I../../include flag:

/Applications/Xcode.app/Contents/Developer/usr/bin/make -C extra/locale locale_headers gcc ../../extra/locale/gen_locale.c -o ../..//extra/locale/gen_locale -Os -D_GNU_SOURCE -I../..//extra/locale

Possibly I haven’t yet understood how to insert extra CFLAGS for uClibc headers, or the UCLIBC_EXTRA_CFLAGS flag doesn’t flow down into the toolchain as it should.

-- Best regards, ~Ceriel

Op 22 nov. 2016, om 13:23 heeft Waldemar Brodkorb wbx@uclibc-ng.org het volgende geschreven:

Hi Ceriel, C. Jacobs wrote,

...

Hi,

Thank you for CONFIG_BUILD_NLS in .config.

Entware-ng make (on OS X) now bumps over the toolchain/uClibc/headers (which in fact is uClibc-ng-1.0.16) section: ... make[3] -C toolchain/kernel-headers install make[3] -C toolchain/uClibc/headers prepare make[3] -C toolchain/uClibc/headers compile make[3] -C toolchain/uClibc/headers install make[3] -C toolchain/gcc/initial prepare ...

I still would like to learn.

Where is the hook (read: correct location) to insert an additional include (-I../../include) property for the "toolchain/uClibc/headers install” phase?

Good question. Normally UCLIBC_EXTRA_CFLAGS can be used. In this case I would add this to toolchain/uClibc/headers/Makefile .