| The OE environment sets and exports CPP as being the target gcc. When building |
| gcc-cross-canadian for a mingw targetted sdk, the following can be found in |
| build.x86_64-pokysdk-mingw32.i586-poky-linux/build-x86_64-linux/libiberty/config.log: |
| |
| configure:3641: checking for _FILE_OFFSET_BITS value needed for large files |
| configure:3666: gcc -c -isystem/media/build1/poky/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe conftest.c >&5 |
| configure:3666: $? = 0 |
| configure:3698: result: no |
| configure:3786: checking how to run the C preprocessor |
| configure:3856: result: x86_64-pokysdk-mingw32-gcc -E --sysroot=/media/build1/poky/build/tmp/sysroots/x86_64-nativesdk-mingw32-pokysdk-mingw32 |
| configure:3876: x86_64-pokysdk-mingw32-gcc -E --sysroot=/media/build1/poky/build/tmp/sysroots/x86_64-nativesdk-mingw32-pokysdk-mingw32 conftest.c |
| configure:3876: $? = 0 |
| |
| Note this is a *build* target (in build-x86_64-linux) so it should be using |
| the host "gcc", not x86_64-pokysdk-mingw32-gcc. Since the mingw32 headers are |
| very different, using the wrong cpp is a real problem. It is leaking into |
| configure through the CPP variable. Ultimately this leads to build failures |
| related to not being able to include a process.h file for pem-unix.c. |
| |
| The fix is to ensure we export a sane CPP value into the build environment when |
| using build targets. We could define a CPP_FOR_BUILD value which may be the version |
| which needs to be upstreamed but for now, this fix is good enough to avoid the |
| problem. |
| |
| RP 22/08/2013 |
| |
| Upstream-Status: Pending |
| |
| Index: gcc-4.8.1/Makefile.in |
| =================================================================== |
| --- gcc-4.8.1.orig/Makefile.in 2013-03-30 11:25:03.000000000 +0000 |
| +++ gcc-4.8.1/Makefile.in 2013-08-13 12:03:17.151988882 +0000 |
| @@ -149,6 +149,7 @@ |
| AR="$(AR_FOR_BUILD)"; export AR; \ |
| AS="$(AS_FOR_BUILD)"; export AS; \ |
| CC="$(CC_FOR_BUILD)"; export CC; \ |
| + CPP="$(CC_FOR_BUILD) -E"; export CPP; \ |
| CFLAGS="$(CFLAGS_FOR_BUILD)"; export CFLAGS; \ |
| CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \ |
| CXX="$(CXX_FOR_BUILD)"; export CXX; \ |