Mashaal was in Turkey Tuesday for a meeting with Prime Minister Recep Tayyip Erdogan amid reports he is looking to move elsewhere from his exile in Qatar.
Mashaal told a news conference broadcast live in Lebanon the Muslim world should prepare for a "popular uprising" for the sake of Jerusalem and the al-Aksa mosque, Israel Radio reported Wednesday.
Mashaal who lives in exile in Qatar met with Erdogan for three hours, Today's Zaman said.
Hamas has found itself increasingly isolated in the Arab world. Egypt has accused it of involvement in terrorist activities in the Sinai and has shut down the border crossing with Gaza a number of times.
While Erdogan's office refused to release details of the meeting, an official told Today's Zaman the two discussed the situation in Gaza, the ongoing conflict in Syria and the failed efforts to reconcile Fatah and Hamas.
Mashaal last met with Erdogan in Ankara in June, Turkish media said.
Maariv reported that Mashaal plans to travel to Iran in the coming days and meet with Iranian government officials.