48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#include <QByteArray>
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#include <QGuiApplication>
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#include <array>
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#include <cstdio>
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static void dumpPluginElfHeader(const char *path) {
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std::fprintf(stderr, "qt6-bootstrap-check inspecting %s\n", path);
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FILE *file = std::fopen(path, "rb");
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if (!file) {
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std::perror("fopen");
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return;
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}
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std::array<unsigned char, 64> hdr{};
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const size_t n = std::fread(hdr.data(), 1, hdr.size(), file);
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std::fclose(file);
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std::fprintf(stderr, "qt6-bootstrap-check read %zu bytes\n", n);
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std::fprintf(stderr, "qt6-bootstrap-check ELF header bytes:");
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for (size_t i = 0; i < n; ++i) {
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std::fprintf(stderr, " %02x", hdr[i]);
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}
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std::fprintf(stderr, "\n");
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if (n >= 58) {
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const unsigned phentsize = unsigned(hdr[54]) | (unsigned(hdr[55]) << 8);
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const unsigned phnum = unsigned(hdr[56]) | (unsigned(hdr[57]) << 8);
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std::fprintf(stderr,
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"qt6-bootstrap-check decoded ELF phentsize=%u phnum=%u\n",
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phentsize,
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phnum);
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}
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}
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int main(int argc, char **argv) {
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const QByteArray platform = qEnvironmentVariableIsSet("QT_QPA_PLATFORM")
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? qgetenv("QT_QPA_PLATFORM")
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: QByteArray("minimal");
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qputenv("QT_QPA_PLATFORM", platform);
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std::fprintf(stderr, "qt6-bootstrap-check before QGuiApplication platform=%s\n", platform.constData());
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dumpPluginElfHeader("/usr/plugins/platforms/libqminimal.so");
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QGuiApplication app(argc, argv);
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std::fprintf(stderr, "qt6-bootstrap-check after QGuiApplication platform=%s\n", platform.constData());
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return 0;
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}
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