[patch] glibc-2.28-cppflags.patch

glibc-2.28-cppflags.patch (text/plain), 963 bytes, created by Sergei Trofimovich (RETIRED) on 2019-05-18 19:13:03 UTC

Fix 'make install-headers' when cross-compiler is not available yet.
Gentoo passes CPPFLAGS='-D__riscv_xlen=64 ... ' to work it around.

Unfortunately depend file generation does not use $(CPPFLAGS).
This causes install to fail as:

../sysdeps/riscv/bits/wordsize.h:22:3: error: #error unsupported ABI
   22 | # error unsupported ABI
      |   ^~~~~
../sysdeps/riscv/bits/wordsize.h:28:3: error: #error "rv32i-based targets are not supported"
   28 | # error "rv32i-based targets are not supported"
      |   ^~~~~

The fix is to pass through 'CPPFLAGS' (and 'CFLAGS' while at it).

Bug: https://bugs.gentoo.org/686248
--- a/Makerules
+++ b/Makerules
@@ -1542,3 +1542,3 @@ $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
 	} |								\
-	$(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' 	\
+	$(CC) $(CFLAGS) $(CPPFLAGS) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' 	\
 	      $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)