Adding this configure option fixes compilation errors which occur when
building with musl-libc. These are known issues with musl that cause structure
redefinition errors in headers between linux/if_ether.h and
netinet/ether.h.
Signed-off-by: Joshua Lant joshualant@xxxxxxxxx
---
INSTALL | 7 +++++++
configure.ac | 10 +++++++++-
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/INSTALL b/INSTALL
index d62b428c..8095b0bb 100644
--- a/INSTALL
+++ b/INSTALL
@@ -63,6 +63,13 @@ Configuring and compiling
optionally specify a search path to include anyway. This is
probably only useful for development.
+--enable-musl-build
+
+ When compiling against musl-libc, you may encounter issues with
+ redefinitions of structures in headers between musl and the kernel.
+ This is a known issue with musl-libc, and setting this option
+ should fix your build.
+
If you want to enable debugging, use
./configure CFLAGS="-ggdb3 -O0"
diff --git a/configure.ac b/configure.ac
index 2293702b..7f54ccd1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -77,6 +77,9 @@ AC_ARG_WITH([xt-lock-name], AS_HELP_STRING([--with-xt-lock-name=PATH],
AC_ARG_ENABLE([profiling],
AS_HELP_STRING([--enable-profiling], [build for use of gcov/gprof]),
[enable_profiling="$enableval"], [enable_profiling="no"])
+AC_ARG_ENABLE([musl-build],
+ AS_HELP_STRING([--enable-musl-build], [Set this option if you encounter compilation errors when building with musl-libc]),
+ [enable_musl_build="$enableval"], [enable_musl_build="no"])
AC_MSG_CHECKING([whether $LD knows -Wl,--no-undefined])
saved_LDFLAGS="$LDFLAGS";
@@ -206,6 +209,10 @@ if test "x$enable_profiling" = "xyes"; then
regular_LDFLAGS+=" -lgcov --coverage"
fi
+if test "x$enable_musl_build" = "xyes"; then
+ regular_CFLAGS+=" -D__UAPI_DEF_ETHHDR=0"
+fi
+
define([EXPAND_VARIABLE],
[$2=[$]$1
if test $prefix = 'NONE'; then
@@ -277,7 +284,8 @@ Build parameters:
Installation prefix (--prefix): ${prefix}
Xtables extension directory: ${e_xtlibdir}
Pkg-config directory: ${e_pkgconfigdir}
- Xtables lock file: ${xt_lock_name}"
+ Xtables lock file: ${xt_lock_name}
+ Build against musl-libc: ${enable_musl_build}"
if [[ -n "$ksourcedir" ]]; then
echo " Kernel source directory: ${ksourcedir}"
--
2.25.1
