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add LIBCC (compiler runtime) logic and override to configure

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this should both fix the issue with ARM needing -lgcc_eh (although
that's really a bug in the libgcc build process that's causing
considerable bloat, which should be fixed) and make it easier to build
musl using clang/llvm in place of gcc. unfortunately I don't know a
good way to detect and support pcc's -lpcc since it's not in pcc's
default library search path...
This commit is contained in:
Rich Felker 2012-09-10 15:30:52 -04:00
parent c87584a3e9
commit 2c1cd2399a
1 changed files with 7 additions and 0 deletions
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7
configure vendored
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@ -34,6 +34,7 @@ Some influential environment variables:
CC C compiler command [detected]
CFLAGS C compiler flags [-Os -pipe ...]
CROSS_COMPILE prefix for cross compiler and tools [none]
LIBCC compiler runtime library [detected]
Use these variables to override the choices made by configure.
@ -128,6 +129,7 @@ CFLAGS=*) CFLAGS=${arg#*=} ;;
CPPFLAGS=*) CPPFLAGS=${arg#*=} ;;
LDFLAGS=*) LDFLAGS=${arg#*=} ;;
CROSS_COMPILE=*) CROSS_COMPILE=${arg#*=} ;;
LIBCC=*) LIBCC=${arg#*=} ;;
*=*) ;;
*) target=$arg ;;
esac
@ -286,6 +288,10 @@ printf "warning: disabling dynamic linking support\n"
shared=no
}
# Find compiler runtime library
test -z "$LIBCC" && tryldflag LIBCC -lgcc && tryldflag LIBCC -lgcc_eh
test -z "$LIBCC" && tryldflag LIBCC -lcompiler_rt
printf "using compiler runtime libraries: %s\n" "$LIBCC"
printf "creating config.mak... "
@ -309,6 +315,7 @@ CFLAGS_C99FSE = $CFLAGS_C99FSE
CPPFLAGS = $CPPFLAGS
LDFLAGS = $LDFLAGS_AUTO $LDFLAGS
CROSS_COMPILE = $CROSS_COMPILE
LIBCC = $LIBCC
EOF
test "x$static" = xno && echo "STATIC_LIBS ="
test "x$shared" = xno && echo "SHARED_LIBS ="