Strip libc.so before linking against it

[termux-packages] / packages / termux-elf-cleaner / termux-elf-cleaner.cpp

diff --git a/packages/termux-elf-cleaner/termux-elf-cleaner.cpp b/packages/termux-elf-cleaner/termux-elf-cleaner.cpp
index 83a4e40..e34c322 100644 (file)
--- a/packages/termux-elf-cleaner/termux-elf-cleaner.cpp
+++ b/packages/termux-elf-cleaner/termux-elf-cleaner.cpp
@@ -14,6 +14,7 @@
 # include <elf.h>
 #endif
 
+#define DT_VERSYM 0x6ffffff0
 #define DT_VERNEEDED 0x6ffffffe
 #define DT_VERNEEDNUM 0x6fffffff
 
@@ -61,6 +62,7 @@ bool process_elf(uint8_t* bytes, size_t elf_file_size, char const* file_name)
                                ElfDynamicSectionEntryType* dynamic_section_entry = dynamic_section + j;
                                char const* removed_name = nullptr;
                                switch (dynamic_section_entry->d_tag) {
+                                       case DT_VERSYM: removed_name = "DT_VERSYM"; break;
                                        case DT_VERNEEDED: removed_name = "DT_VERNEEDED"; break;
                                        case DT_VERNEEDNUM: removed_name = "DT_VERNEEDNUM"; break;
                                        case DT_VERDEF: removed_name = "DT_VERDEF"; break;
@@ -76,6 +78,11 @@ bool process_elf(uint8_t* bytes, size_t elf_file_size, char const* file_name)
                                        std::swap(dynamic_section[j--], dynamic_section[last_nonnull_entry_idx--]);
                                }
                        }
+               } else if (section_header_entry->sh_type == SHT_GNU_verdef ||
+                          section_header_entry->sh_type == SHT_GNU_verneed ||
+                          section_header_entry->sh_type == SHT_GNU_versym) {
+                       printf("termux-elf-cleaner: Removing version section from '%s'\n", file_name);
+                       section_header_entry->sh_type = SHN_UNDEF;
                }
        }
        return true;