Fix biscuit building under Linux musl-gcc

biscuit/CMakeLists.txt

@@ -38,9 +38,9 @@ endif ()
 set(CMAKE_ASM_COMPILER      ${PREFIX}gcc)
 set(CMAKE_C_COMPILER        ${PREFIX}gcc)
 set(CMAKE_RANLIB            ${PREFIX}ranlib)
-set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wall -Werror -Wno-pointer-to-int-cast -Wno-format -MMD -MP -O -g -fPIC -static -std=gnu99")
+set(CMAKE_C_FLAGS           "${CMAKE_C_FLAGS} -Wall -Wno-pointer-to-int-cast -Wno-format -MMD -MP -O -g -fPIC -static -std=gnu99")
 set(CMAKE_ASM_FLAGS         ${CMAKE_C_FLAGS})
-set(CMAKE_C_LINK_FLAGS      "${LINK_FLAGS}")  # override default value to get rid of '-Wl,-search_paths_first -Wl,-headerpad_max_install_names'
+set(CMAKE_C_LINK_FLAGS      "${LINK_FLAGS} -pthread")  # override default value to get rid of '-Wl,-search_paths_first -Wl,-headerpad_max_install_names'
 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS)                  # override default value to get rid of '-rdynamic' on Linux
 
 # Execuatble

biscuit/c/include/common.h

@@ -1,3 +1,5 @@
+#define __NEED_uintptr_t
+
 #include <arpa/inet.h>
 #include <dirent.h>
 #include <err.h>
@@ -15,8 +17,11 @@
 #include <sys/param.h>
 #include <sys/un.h>
 #include <sys/reboot.h>
+#include <sys/resource.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <string.h>
 #include <spawn.h>
 #include <unistd.h>